{"id":31671,"date":"2017-09-02T15:10:20","date_gmt":"2017-09-02T06:10:20","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=31671"},"modified":"2025-12-29T17:07:36","modified_gmt":"2025-12-29T08:07:36","slug":"30%e5%88%86%e3%81%a7%e7%90%86%e8%a7%a3%ef%bc%81javascript%e3%81%aefunction%e9%96%a2%e6%95%b0%e3%82%92%e4%b8%80%e7%99%ba%e7%90%86%e8%a7%a3%e3%81%99%e3%82%8b%e3%82%b3%e3%83%84%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/31671","title":{"rendered":"\u3010JavaScript\u5165\u9580\u3011function(\u95a2\u6570)\u306e\u4f7f\u3044\u65b9\u3001\u547c\u3073\u51fa\u3057\u30fb\u623b\u308a\u5024\u306a\u3069\u7dcf\u307e\u3068\u3081\uff01"},"content":{"rendered":"\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3057\u3066\u3044\u308b\u3068\u3001\u51e6\u7406\u30921\u3064\u306b\u307e\u3068\u3081\u3066\u7ba1\u7406\u3057\u305f\u3044\u6642\u3084\u3001\u540c\u3058\u51e6\u7406\u3092\u4f7f\u3044\u307e\u308f\u3057\u305f\u308a\u3057\u305f\u3044\u6642\u3063\u3066\u3042\u308a\u307e\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u3001\u305d\u3093\u306a\u6642\u306b\u4f7f\u3048\u308bfunction(\u95a2\u6570)\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u306f\u4e0b\u8a18\u306e\u6d41\u308c\u3067\u3001function(\u95a2\u6570)\u306b\u3064\u3044\u3066\u5e45\u5e83\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n<div class=\"box01\">\n\n\n\n<ul class=\"wp-block-list\">\n<li><b>\u3010\u57fa\u790e\u3011function(\u95a2\u6570)\u3068\u306f\uff1f<\/b><\/li>\n\n\n\n<li><b>\u3010\u57fa\u790e\u3011function(\u95a2\u6570)\u306e\u4f7f\u3044\u65b9<\/b><\/li>\n\n\n\n<li><b>\u3010\u57fa\u790e\u3011function(\u95a2\u6570)\u306e\u547c\u3073\u51fa\u3057\u65b9<\/b><\/li>\n\n\n\n<li><b>\u3010\u57fa\u790e\u3011function(\u95a2\u6570)\u306e\u66f8\u304d\u65b9<\/b><\/li>\n\n\n\n<li><b>\u3010\u767a\u5c55\u3011function(\u95a2\u6570)\u306e\u5f15\u6570<\/b><\/li>\n\n\n\n<li><b>\u3010\u767a\u5c55\u3011function(\u95a2\u6570)\u306e\u623b\u308a\u5024<\/b><\/li>\n\n\n\n<li><b>\u3010\u767a\u5c55\u3011function\u306ethis\u3068\u306f\uff1f<\/b><\/li>\n\n\n\n<li><b>\u3010\u767a\u5c55\u3011function(\u95a2\u6570)\u306e\u30b9\u30b3\u30fc\u30d7\u306b\u3064\u3044\u3066<\/b><\/li>\n\n\n\n<li><b>\u3010\u767a\u5c55\u3011function(\u95a2\u6570)\u3092\u3082\u3063\u3068\u6d3b\u7528\u3057\u3088\u3046<\/b><\/li>\n<\/ul>\n\n\n<\/div>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067function(\u95a2\u6570)\u3092\u3057\u3063\u304b\u308a\u5b66\u7fd2\u3057\u3066\u3001\u81ea\u5206\u306e\u30b9\u30ad\u30eb\u30a2\u30c3\u30d7\u3092\u76ee\u6307\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u3053\u308c\u304b\u3089Javascript\u306e\u30b9\u30ad\u30eb\u3092\u5411\u4e0a\u3055\u305b\u3066\u3044\u304d\u305f\u3044\u65b9\u306b\u5411\u3051\u3066\u3001\u304a\u3059\u3059\u3081\u306eJavascript\u5b66\u7fd2\u30b5\u30a4\u30c816\u9078\u3092\u5225\u3067\u7d39\u4ecb\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u3061\u3089\u3082\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n            <a href=\"https:\/\/www.sejuku.net\/blog\/227918\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2023\/11\/howto-03-1-150x85.png\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">Javascript\u306e\u304a\u3059\u3059\u3081\u5b66\u7fd2\u30b5\u30a4\u30c816\u9078\uff01\u9078\u3076\u30b3\u30c4\u3084\u6ce8\u610f\u70b9\u3092\u89e3\u8aac<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2025\u5e7412\u670826\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n\n\n\n<p class=\"u-mb-ctrl u-mb-10\">\u300c\u72ec\u5b66\u3068\u4e26\u884c\u3057\u306a\u304c\u3089\u3001\u526f\u696d\u3067\u7a3c\u3052\u308b\u3088\u3046\u306b\u306a\u308c\u308b\u304b\u306a&#8230;\u300d<\/p>\n\n<p class=\"u-mb-ctrl u-mb-10\">\u305d\u3093\u306a\u4e0d\u5b89\u3092\u62b1\u3048\u3066\u3044\u308b\u4eba\u306f\u3001\u305c\u3072\u300c<strong><a href=\"https:\/\/lp.sejuku.net\/lp1_blog_02\/?cid=lp_text_cta\">\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2<\/a><\/strong>\u300d\u3092\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002<\/p>\n\n<p class=\"u-mb-ctrl u-mb-10\">\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u306f\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u5b66\u7fd2\u30b3\u30fc\u30c1\u306e<strong><span class=\"swl-marker mark_yellow\">2\u540d\u4f53\u5236\u3067<\/span><\/strong>\u5b66\u7fd2\u3092\u30b5\u30dd\u30fc\u30c8\u3002\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u652f\u63f4\u3092\u53d7\u3051\u306a\u304c\u3089\u3001\u5b9f\u969b\u306e\u526f\u696d\u6848\u4ef6\u306b\u3082\u6311\u6226\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<p class=\"u-mb-ctrl u-mb-10\">\u3053\u308c\u307e\u3067<strong><span class=\"swl-marker mark_yellow\">4\u4e075,000\u540d\u4ee5\u4e0a<\/span><\/strong><span class=\"swl-marker mark_yellow\">\u306e<\/span>\u53d7\u8b1b\u751f\u3092\u6307\u5c0e\u3057\u3066\u304d\u305f\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u306a\u3089\u3001\u672a\u7d4c\u9a13\u304b\u3089\u3067\u3082\u632b\u6298\u306a\u304f\u526f\u696d\u3067\u306e\u53ce\u5165\u7372\u5f97\u306b\u76f4\u7d50\u3059\u308b\u30b9\u30ad\u30eb\u304c\u8eab\u306b\u3064\u3051\u3089\u308c\u307e\u3059\u3088\u3002<\/p>\n\n<p class=\"has-text-align-center u-mb-ctrl u-mb-0\">\uff3c \u7d66\u4ed8\u91d1\u3067\u53d7\u8b1b\u6599\u304c\u6700\u592780%OFF \uff0f<a href=\"https:\/\/lp.sejuku.net\/lp1_blog_02?cid=pro_howto_normal_pr_Normal_sbid-3286\"><\/a><\/p>\n\n<div class=\"swell-block-button is-style-btn_shiny\" data-id=\"2b3d06a9\"><a href=\"https:\/\/lp.sejuku.net\/lp1_blog_02\/?cid=lp_text_cta\" class=\"swell-block-button__link\"><span>\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/span><\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>function(\u95a2\u6570)\u3068\u306f\u3001<b>\u69d8\u3005\u306a\u51e6\u7406\u30921\u3064\u306b\u307e\u3068\u3081\u3066\u3001\u540d\u524d\u3092\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3082\u306e<\/b>\u3067\u3059\u3002\u5358\u8abf\u306a\u51e6\u7406\u30921\u3064\u306b\u307e\u3068\u3081\u3066\u3001\u3069\u3053\u304b\u3089\u3067\u3082\u4f7f\u3048\u308b\u3088\u3046\u306b\u52b9\u7387\u5316\u3059\u308b\u3068\u3044\u3046\u76ee\u7684\u3067\u3088\u304f\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>1\u3064\u306b\u307e\u3068\u3081\u308b\u3053\u3068\u3067\u3001\u540c\u3058\u51e6\u7406\u3092\u4f55\u5ea6\u3082\u66f8\u304f\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u30df\u30b9\u304c\u6e1b\u308b\u3046\u3048\u3001\u5225\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u4f7f\u3044\u307e\u308f\u3059\u3053\u3068\u3082\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001function(\u95a2\u6570)\u306f\u5024\u3092\u53d7\u3051\u53d6\u3063\u305f\u308a\u3001\u4f55\u3089\u304b\u306e\u51e6\u7406\u3092\u884c\u3063\u305f\u5024\u3092\u8fd4\u3059\u3053\u3068\u3082\u53ef\u80fd\u306a\u306e\u3067\u3001<b>\u6700\u5c0f\u306e\u30b3\u30fc\u30c9\u3067\u6700\u5927\u9650\u306e\u30d1\u30ef\u30fc\u3092\u5f15\u304d\u51fa\u305b\u308b\u529b<\/b>\u3092\u79d8\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u52b9\u7387\u306e\u3088\u3044\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u306f\u5fc5\u9808\u306e\u30b9\u30ad\u30eb\u3068\u8a00\u3063\u3066\u3082\u904e\u8a00\u3067\u306f\u306a\u3044\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<p>function\u3092\u5229\u7528\u3059\u308b\u306b\u306f\u3001\u4e00\u822c\u7684\u306b\u95a2\u6570\u5ba3\u8a00\u3001\u95a2\u6570\u5f0f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3068\u3044\u30463\u7a2e\u985e\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u95a2\u6570\u5ba3\u8a00\u3067\u66f8\u304f<\/h3>\n\n\n\n<p>1\u3064\u76ee\u306f\u3001\u95a2\u6570\u5ba3\u8a00\u306b\u3088\u3063\u3066\u66f8\u304f\u65b9\u6cd5\u3067\u3059\u3002\u4e00\u756a\u30dd\u30d4\u30e5\u30e9\u30fc\u306a\u65b9\u6cd5\u306a\u306e\u3067\u3001\u898b\u305f\u3053\u3068\u304c\u3042\u308b\u4eba\u3082\u591a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u6587\u5b57\u901a\u308a\u3001<b>\u95a2\u6570\u3092\u305d\u306e\u307e\u307e\u5ba3\u8a00\u3059\u308b<\/b>\u3053\u3068\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u3067\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample() {\n\n    \/\/\u3053\u3053\u306b\u51e6\u7406\u3092\u66f8\u3044\u3066\u3044\u304f\n\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300csample\u300d\u3068\u3044\u3046\u95a2\u6570\u540d\u3092\u4ed8\u3051\u3066\u95a2\u6570\u5ba3\u8a00\u3092\u884c\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u540d\u306f\u81ea\u5206\u3067\u52dd\u624b\u306b\u6c7a\u3081\u3066\u826f\u3044\u306e\u3067\u3059\u304c\u3001\u4e00\u822c\u7684\u306b\u306f\u300c\u3069\u3093\u306a\u51e6\u7406\u3092\u3059\u308b\u306e\u304b\uff1f\u300d\u3068\u3044\u3046\u306e\u304c\u540d\u79f0\u304b\u3089\u63a8\u6e2c\u3067\u304d\u308b\u3053\u3068\u304c\u671b\u307e\u3057\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u4f55\u3089\u304b\u306e\u5024\u3092\u53d6\u5f97\u3059\u308b\u306e\u3067\u3042\u308c\u3070\u300cget\u25cb\u25cb\u25cb()\u300d\u3001\u5024\u3092\u8ffd\u52a0\u3059\u308b\u306e\u3067\u3042\u308c\u3070\u300cadd\u25cb\u25cb\u25cb()\u300d\u3068\u3044\u3046\u3088\u3046\u306b\u6c7a\u3081\u3066\u3044\u304f\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u95a2\u6570\u5f0f\u3067\u66f8\u304f<\/h3>\n\n\n\n<p>2\u3064\u76ee\u306f\u3001\u95a2\u6570\u5f0f\uff08\u95a2\u6570\u30ea\u30c6\u30e9\u30eb\uff09\u306b\u3088\u308bfunction\u306e\u5229\u7528\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u3092\u5ba3\u8a00\u3059\u308b\u969b\u306b\u95a2\u6570\u540d\u3092\u8a18\u8ff0\u3057\u306a\u304f\u3066\u3082\u826f\u3044\u306e\u3067\u3001\u7121\u540d\u95a2\u6570\u3084\u533f\u540d\u95a2\u6570\u3068\u3082\u547c\u3070\u308c\u308b\u65b9\u6cd5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var sample = function() {\n\n    \/\/\u3053\u3053\u306b\u51e6\u7406\u3092\u66f8\u3044\u3066\u3044\u304f\n\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u95a2\u6570\u540d\u3092\u6307\u5b9a\u305b\u305a\u306b\u305d\u306e\u307e\u307e\u5909\u6570\u3078\u5f0f\u3092\u4ee3\u5165\u3059\u308b\u5f62\u5f0f\u3067\u8a18\u8ff0\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u306fJavaScript\u306e\u95a2\u6570\u306f\u3001\u6587\u5b57\u5217\u3084\u6570\u5024\u3068\u540c\u3058\u304f\u30c7\u30fc\u30bf\u306e\u5024\u3068\u3057\u3066\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002<br>\u306a\u306e\u3067\u3001\u3053\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u304c\u8a31\u3055\u308c\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u66f8\u304f<\/h3>\n\n\n\n<p>3\u3064\u76ee\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u5229\u7528\u3057\u305ffunction\u306e\u8a18\u8ff0\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001JavaScript\u306b\u6a19\u6e96\u3067\u7528\u610f\u3055\u308c\u3066\u3044\u308bFunction\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u5229\u7528\u3057\u3066\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var sample = new Function('text', 'console.log(text)');<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u7b2c1\u5f15\u6570\u306b\u5f15\u6570\u540d\u3068\u3057\u3066\u300ctext\u300d\u3092\u6307\u5b9a\u3057\u3066\u7b2c2\u5f15\u6570\u306b\u51e6\u7406\u306e\u5185\u5bb9\u3092\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3042\u3068\u306f\u3001\u300csample(&#8216;hello&#8217;)\u300d\u3068\u8a18\u8ff0\u3059\u308c\u3070\u5f15\u6570\u306etext\u306b\u300chello\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u304c\u683c\u7d0d\u3055\u308c\u3066\u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30b0\u306b\u51fa\u529b\u3055\u308c\u308b\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u4f7f\u3063\u305f\u8a18\u8ff0\u306f\u7279\u306b\u30e1\u30ea\u30c3\u30c8\u304c\u306a\u304f\u3001\u9593\u9055\u3044\u3084\u3059\u3044\u3053\u3068\u304b\u3089<b>\u3042\u307e\u308a\u5229\u7528\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093<\/b>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u521d\u5fc3\u8005\u306f\u5b66\u7fd2\u30b5\u30a4\u30c8\u3092\u767b\u9332\u3059\u308b\u306e\u304c\u304a\u3059\u3059\u3081<\/h2>\n\n\n\n<p>\u521d\u5fc3\u8005\u304c\u52b9\u7387\u7684\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b66\u7fd2\u3059\u308b\u306b\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u30b5\u30a4\u30c8\u3092\u4f7f\u3046\u306e\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7121\u6599\u3067\u4f7f\u7528\u3067\u304d\u308b\u3082\u306e\u3067\u3042\u308c\u3070\u3001\u4f59\u8a08\u306a\u8cbb\u7528\u3092\u304b\u3051\u308b\u3053\u3068\u306a\u304f\u52b9\u7387\u7684\u306b\u52c9\u5f37\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u4ed6\u306e\u4eba\u3088\u308a\u3082\u65e9\u304f\u30b9\u30ad\u30eb\u30a2\u30c3\u30d7\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7121\u6599\u3067\u73fe\u5834\u3067\u6d3b\u8e8d\u3057\u3066\u3044\u308b\u30d7\u30ed\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u76f8\u8ac7\u304c\u3067\u304d\u308b\u5b66\u7fd2\u30b5\u30a4\u30c8\u306a\u3069\u3082\u3042\u308b\u305f\u3081\u3001\u6c17\u306b\u306a\u3063\u305f\u65b9\u306f\u305c\u3072\u5229\u7528\u3057\u3066\u307f\u308b\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u306e\u66f8\u304d\u65b9<\/h2>\n\n\n\n<p>\u3053\u306e\u7ae0\u3067\u306f\u3001\u3082\u3063\u3068\u3082\u57fa\u672c\u3068\u306a\u308b\u95a2\u6570\u306e\u66f8\u304d\u65b9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u4e3b\u306b\u3001\u4e00\u822c\u7684\u306afunction\u306e\u4f5c\u308a\u65b9\u3084\u6a19\u6e96\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u95a2\u6570\u3001\u304a\u3088\u3073\u65b0\u3057\u304f\u5c0e\u5165\u3055\u308c\u305f\u30a2\u30ed\u30fc\u95a2\u6570\u306b\u306b\u3064\u3044\u3066\u5b66\u3093\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u672c\u7684\u306afunction\u306e\u4f5c\u308a\u65b9\u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<p>\u524d\u7ae0\u3067\u306f\u3001function\u306e\u4f7f\u3044\u65b9\u3068\u3057\u3066\u300c\u95a2\u6570\u5ba3\u8a00\u300d\u300c\u95a2\u6570\u5f0f\u300d\u306a\u3069\u3092\u898b\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u3001\u5b9f\u969b\u306b\u95a2\u6570\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306f\u3069\u306e\u3088\u3046\u306b\u884c\u3046\u306e\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var p = document.createElement('p');\n\np.textContent = 'Hello World';\n\ndocument.body.appendChild(p);\n<\/pre>\n\n\n\n<p>\u3053\u308c\u306f\u3001\u5358\u7d14\u306ap\u8981\u7d20\u3092JavaScript\u5074\u3067\u4f5c\u6210\u3057\u3066\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3092\u95a2\u6570\u5316\u3057\u305f\u3044\u5834\u5408\u306b\u306f\u3001\u9069\u5f53\u306a\u95a2\u6570\u540d\u3092\u4ed8\u4e0e\u3057\u3066{ }\u3067\u56f2\u3093\u3067\u3042\u3052\u308c\u3070\u826f\u3044\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function createP() {\n  var p = document.createElement('p');\n\n  p.textContent = 'Hello World';\n\n  document.body.appendChild(p);\n}\n<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300ccreateP\u300d\u3068\u3044\u3046\u95a2\u6570\u540d\u3092\u4ed8\u4e0e\u3057\u3066\u3044\u307e\u3059\u306d\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4ee5\u964d\u306f\u300ccreateP()\u300d\u3068\u8a18\u8ff0\u3059\u308b\u3060\u3051\u3067p\u8981\u7d20\u3092\u4f5c\u6210\u3057\u3066\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3082\u3061\u308d\u3093\u3001HTML\u30bf\u30b0\u306e\u5c5e\u6027\u300conclick\u300d\u306b\u8a18\u8ff0\u3059\u308c\u3070\u30af\u30ea\u30c3\u30af\u3059\u308b\u3053\u3068\u3067\u95a2\u6570\u3092\u5b9f\u884c\u3055\u305b\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a2\u30ed\u30fc\u95a2\u6570\u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<p>ES2015\u304b\u3089\u5c0e\u5165\u3055\u308c\u305f\u30a2\u30ed\u30fc\u95a2\u6570\u306b\u3064\u3044\u3066\u306e\u66f8\u304d\u65b9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u30a2\u30ed\u30fc\u95a2\u6570\u306e\u5834\u5408\u306f\u300cfunction\u300d\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u308f\u306a\u3044\u4ee3\u308f\u308a\u306b\u3001\u300c=&gt;\u300d\u3067\u95a2\u6570\u3092\u8868\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u6b21\u306e\u3088\u3046\u306a\u95a2\u6570\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var myFunc = function(name) {\n  console.log(name);\n}\n<\/pre>\n\n\n\n<p>\u3053\u308c\u306f\u5358\u7d14\u306b\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30b0\u306b\u51fa\u529b\u3059\u308b\u3060\u3051\u306e\u95a2\u6570\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3092\u30a2\u30ed\u30fc\u95a2\u6570\u3067\u8a18\u8ff0\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var myFunc = (name) =&gt; {\n  console.log(name);\n}\n<\/pre>\n\n\n\n<p>\u300cfunction\u300d\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u7121\u304f\u306a\u308a\u300c=&gt;\u300d\u3092\u8a18\u8ff0\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306b\u3001\u30a2\u30ed\u30fc\u95a2\u6570\u3067\u306f\u51e6\u7406\u304c1\u884c\u306e\u5834\u5408\u306b\u9650\u308a{ }\u3067\u56f2\u3080\u5fc5\u8981\u304c\u7121\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var myFunc = (name) =&gt; console.log(name);\n<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u30ef\u30f3\u30e9\u30a4\u30ca\u30fc\u3067\u8a18\u8ff0\u3067\u304d\u308b\u306e\u3067\u3088\u308a\u30b7\u30f3\u30d7\u30eb\u306a\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u306f\u3001\u3082\u3063\u3068\u7701\u7565\u304c\u53ef\u80fd\u3067\u300c\u5f15\u6570\u300d\u304c1\u3064\u3060\u3051\u306e\u5834\u5408\u306f( )\u3092\u66f8\u304f\u5fc5\u8981\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var myFunc = name =&gt; console.log(name);\n<\/pre>\n\n\n\n<p>\u7c21\u5358\u306a\u95a2\u6570\u3067\u3042\u308c\u3070\u3053\u3053\u307e\u3067\u8a18\u8ff0\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u5f15\u6570\u304c1\u3064\u3082\u7121\u3044\u5834\u5408\u306b\u306f( )\u3060\u3051\u3092\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var myFunc = () =&gt; console.log('\u592a\u90ce');\n\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u306e\u547c\u3073\u51fa\u3057\u65b9<\/h2>\n\n\n\n<p>\u95a2\u6570\u306f\u5ba3\u8a00\u3057\u305f\u3042\u3068\u306b\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u306f\u3058\u3081\u3066\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u300c\u547c\u3073\u51fa\u3057\u300d\u3068\u3044\u3046\u8868\u73fe\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u7c21\u5358\u306b\u8a00\u3048\u3070<b>\u5b9a\u7fa9\u3057\u305f\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u3068\u3044\u3046\u610f\u5473<\/b>\u306a\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u57fa\u672c\u7684\u306a\u547c\u3073\u51fa\u3057\u65b9\u6cd5\u3084\u3001\u3088\u304f\u4f7f\u308f\u308c\u308bonclick()\u3084onload()\u306b\u3088\u308b\u547c\u3073\u51fa\u3057\u65b9\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u672c\u306e\u547c\u3073\u51fa\u3057:\u95a2\u6570\u540d\u3092\u6307\u5b9a<\/h3>\n\n\n\n<p>\u307e\u305a\u306f\u57fa\u672c\u7684\u306a\u95a2\u6570\u547c\u3073\u51fa\u3057\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3092\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3001<\/p>\n\n\n\n<p>\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample() {\n    var text = 'Hello World';\n    \n    console.log( text );\n}\n\n\/\/function\u3092\u547c\u3073\u51fa\u3059\nsample();<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Hello World<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u4f5c\u6210\u3057\u3066\u3044\u308b\u300csample\u95a2\u6570\u300d\u306f\u3001\u6587\u5b57\u5217\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30b0\u306b\u51fa\u529b\u3059\u308b\u6a5f\u80fd\u3092\u6301\u3063\u305f\u95a2\u6570\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u3001\u3053\u306e\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u306b\u306f\u95a2\u6570\u540d\u3092\u305d\u306e\u307e\u307e\u5229\u7528\u3057\u3066\u300csample()\u300d\u3068\u8a18\u8ff0\u3059\u308c\u3070OK\u3067\u3059\u3002\u3057\u3063\u304b\u308a\u3068\u6587\u5b57\u5217\u304c\u51fa\u529b\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u5b9f\u884c\u7d50\u679c\u304b\u3089\u3082\u5206\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3061\u306a\u307f\u306b\u3001\u3053\u306e\u547c\u3073\u51fa\u3057\u65b9\u6cd5\u306f\u95a2\u6570\u5f0f\u3092\u4f7f\u3063\u305ffunction\u306e\u5834\u5408\u3067\u3082\u540c\u3058\u306a\u306e\u3067\u5fd8\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30af\u30ea\u30c3\u30af\u3057\u305f\u3089\u547c\u3073\u51fa\u3057:onclick()<\/h3>\n\n\n\n<p>\u4eca\u5ea6\u306fHTML\u8981\u7d20\u306eonclick\u5c5e\u6027\u3092\u4f7f\u3063\u3066\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>onclick\u5c5e\u6027\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6307\u5b9a\u3057\u305f\u8981\u7d20\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u969b\u306bfunction\u3092\u52d5\u4f5c\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u5148\u307b\u3069\u4f5c\u6210\u3057\u305f\u95a2\u6570\u300csample()\u300d\u3092onclick\u5c5e\u6027\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;button onclick=\"sample()\"&gt;\u30dc\u30bf\u30f3&lt;\/button&gt;<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001button\u8981\u7d20\u306eonclick\u5c5e\u6027\u306b\u95a2\u6570\u300csample()\u300d\u3092\u6307\u5b9a\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u5834\u5408\u306e\u307f\u95a2\u6570\u306esample()\u304c\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001<b>onclick\u5c5e\u6027\u306b\u6307\u5b9a\u3057\u305f\u95a2\u6570\u306f\u3001JavaScript\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u95a2\u6570\u3092\u81ea\u52d5\u7684\u306b\u63a2\u3057\u51fa\u3057\u3066\u5b9f\u884c\u3057\u3066\u304f\u308c\u308b<\/b>\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ed\u30fc\u30c9\u3057\u305f\u3089\u547c\u3073\u51fa\u3057:onload()<\/h3>\n\n\n\n<p>\u6b21\u306b\u3001onload()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u305f\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u65b9\u6cd5\u3092\u5b66\u7fd2\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3092\u4f7f\u3046\u3068\u3001HTML\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u3059\u3079\u3066\u8aad\u307f\u8fbc\u307e\u308c\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u3001\u4efb\u610f\u306e\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">window.onload = function() {\n\n    console.log( 'Hello World' );\n\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300cwindow.onload\u300d\u306b\u95a2\u6570\u3092\u305d\u306e\u307e\u307e\u4ee3\u5165\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u3002<br>\u3053\u306e\u8a18\u8ff0\u306b\u3088\u308aHTML\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u304c\u8aad\u307f\u8fbc\u307e\u308c\u305f\u3042\u3068\u306b\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u306e\u8a18\u8ff0\u65b9\u6cd5\u3067\u3082\u540c\u3058\u3053\u3068\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">window.addEventListener('load', function() {\n\n    console.log('Hello World');\n\n})<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001addEventListener()\u3092\u4f7f\u3063\u3066\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5f15\u6570\u306b\u95a2\u6570\u306e\u51e6\u7406\u5185\u5bb9\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3069\u3061\u3089\u306e\u66f8\u304d\u65b9\u3067\u3082\u6271\u3048\u308b\u3088\u3046\u306b\u6163\u308c\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u306e\u5f15\u6570<\/h2>\n\n\n\n<p>function(\u95a2\u6570)\u3067\u51e6\u7406\u30921\u3064\u306b\u307e\u3068\u3081\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u304d\u305f\u3089\u3001\u5f15\u6570\u3092\u6307\u5b9a\u3057\u3066\u51e6\u7406\u3092\u52b9\u7387\u5316\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001\u4e00\u822c\u7684\u306a\u5f15\u6570\u306e\u5229\u7528\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">function\u306b\u5f15\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u307e\u305a\u306f\u3001\u5f15\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u5b66\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u4e00\u822c\u7684\u306a\u8a18\u8ff0\u65b9\u6cd5\u3068\u3057\u3066\u306f<b>function( \u5f15\u6570, \u5f15\u6570\u30fb\u30fb\u30fb )\u306e\u3088\u3046\u306b\u3044\u304f\u3064\u3067\u3082\u5f15\u6570\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/b>\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u5f15\u6570\u306f\u3001\u95a2\u6570\u5185\u3067\u81ea\u7531\u306b\u6271\u3048\u308b[\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u51e6\u7406\u306e\u4e2d\u306b\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3046\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample(name, age) {\n    \n    \/\/\u3053\u306e\u4e2d\u306b\u8a18\u8ff0\u3059\u308b\u51e6\u7406\u3067\u5f15\u6570\u300cname\u300d\u300cage\u300d\u304c\u4f7f\u3048\u308b\n    \n}<\/pre>\n\n\n\n<p>\u95a2\u6570sample()\u306e\u5f15\u6570\u3068\u3057\u3066\u300cname\u300d\u3068\u300cage\u300d\u3092\u8a18\u8ff0\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3042\u3068\u306f\u3001\u3053\u306e\u95a2\u6570\u5185\u3067\u300cname\u300d\u3068\u300cage\u300d\u3092\u666e\u901a\u306e\u5909\u6570\u307f\u305f\u3044\u306b\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">function\u306e\u5f15\u6570\u306b\u5024\u3092\u6e21\u3059\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u6b21\u306b\u3001\u8a2d\u5b9a\u3057\u305f\u5f15\u6570\u306b\u4f55\u3089\u304b\u306e\u5024\u3092\u6e21\u3059\u65b9\u6cd5\u306b\u3064\u3044\u3066\u5b66\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u5148\u307b\u3069\u5f15\u6570\u3068\u3057\u3066\u300cname \/ age\u300d\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u304c\u3001\u3053\u308c\u3089\u306b\u5024\u3092\u6e21\u3059\u306b\u306f\u6b21\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample(name, age) {\n\n    console.log(name + '\u3055\u3093\u306e\u5e74\u9f62\u306f' + age + '\u3067\u3059\uff01');\n\n}\n\n\/\/\u5f15\u6570\u306b\u5024\u3092\u6e21\u3059\nsample('\u592a\u90ce', 32);<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u592a\u90ce\u3055\u3093\u306e\u5e74\u9f62\u306f32\u3067\u3059\uff01<\/pre>\n\n\n\n<p>\u6700\u5f8c\u306esample()\u306b\u5f15\u6570\u3092\u6307\u5b9a\u3057\u3066\u3044\u308b\u7b87\u6240\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<p>\u300csample(&#8216;\u592a\u90ce&#8217;, 32)\u300d\u3068\u5f15\u6570\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u308c\u305e\u308c\u9806\u756a\u306b\u300cname \/ age\u300d\u3078\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u300cname\u300d\u306b\u306f\u300c\u592a\u90ce\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u304c\u5165\u308a\u3001\u300cage\u300d\u306b\u306f\u300c32\u300d\u3068\u3044\u3046\u6570\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5f15\u6570\u3092\u6d3b\u7528\u3059\u308c\u3070\u3001\u5b9f\u884c\u7d50\u679c\u306e\u3088\u3046\u306b1\u3064\u306e\u6587\u5b57\u5217\u3068\u3057\u3066\u51fa\u529b\u3059\u308b\u3053\u3068\u3082\u51fa\u6765\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5f15\u6570\u3092\u4f7f\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3055\u307e\u3056\u307e\u306a\u5024\u306b\u3082\u5fdc\u7528\u3067\u304d\u307e\u3059\u3088\u306d\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">sample('\u592a\u90ce', 32);\nsample('\u82b1\u5b50', 27);\nsample('\u4e09\u90ce', 22);<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u592a\u90ce\u3055\u3093\u306e\u5e74\u9f62\u306f32\u3067\u3059\uff01\n\u82b1\u5b50\u3055\u3093\u306e\u5e74\u9f62\u306f27\u3067\u3059\u3002\u4e09\u90ce\u3055\u3093\u306e\u5e74\u9f62\u306f22\u3067\u3059\u3002<\/pre>\n\n\n\n<p>1\u3064\u306e\u95a2\u6570\u3092\u4f5c\u308b\u3060\u3051\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30b1\u30fc\u30b9\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u306e\u304c\u5f15\u6570\u306e\u5927\u304d\u306a\u7279\u5fb4\u306a\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">function\u306e\u5f15\u6570\u306b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\n\n\n\n<p>function\u306e\u5f15\u6570\u306b\u306f\u3001\u5225\u306e\u95a2\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u5225\u306e\u95a2\u6570\u3092\u5f15\u6570\u306b\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u95a2\u6570\u306e\u51e6\u7406\u304c\u7d42\u4e86\u3057\u305f\u3042\u3068\u306b\u5f15\u6570\u3078\u8a2d\u5b9a\u3057\u305f\u95a2\u6570\u3092\u5b9f\u884c\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u9806\u756a\u306b\u5b9f\u884c\u3057\u305f\u3044\u95a2\u6570\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3001\u4f8b\u3048\u3070\u6642\u9593\u306e\u639b\u304b\u308b\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u60c5\u5831\u3092\u53d6\u5f97\u3057\u305f\u3042\u3068\u306b\u5225\u306e\u51e6\u7406\u3092\u3057\u305f\u3044\u5834\u5408\u306a\u3069\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function testFunc(callback) {\n \n    setTimeout(function() {\n        console.log('testFunc\u304c\u5b9f\u884c\u3055\u308c\u307e\u3057\u305f');\n        callback();\n    }, 2000)\n \n}\n<\/pre>\n\n\n\n<p>\u3053\u306e\u95a2\u6570\u300ctestFunc()\u300d\u306e\u5f15\u6570\u306b\u306f\u300ccallback\u300d\u3068\u3044\u3046\u95a2\u6570\u3092\u8a18\u8ff0\u3057\u3066\u304a\u308a\u3001setTimeout()\u306e\u6700\u5f8c\u306b\u5b9f\u884c\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u3059\u307e\u3088\u306d\uff1f<\/p>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u30012\u79d2\u7d4c\u904e\u5f8c\u306b\u5f15\u6570\u3078\u8a2d\u5b9a\u3057\u3066\u3044\u305f\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306e\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u8a18\u4e8b\u3067\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u4f53\u7cfb\u7684\u306b\u307e\u3068\u3081\u3066\u3044\u308b\u306e\u3067\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u306e\u623b\u308a\u5024<\/h2>\n\n\n\n<p>\u95a2\u6570\u306f\u623b\u308a\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001<b>\u95a2\u6570\u5185\u3067\u51e6\u7406\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3059\u3053\u3068\u304c\u53ef\u80fd<\/b>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001\u4e00\u822c\u7684\u306b\u4f7f\u308f\u308c\u308breturn\u6587\u3092\u5229\u7528\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u624b\u6cd5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">return\u6587\u306e\u66f8\u304d\u65b9<\/h3>\n\n\n\n<p>\u95a2\u6570\u5185\u306breturn\u6587\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001<b>\u4efb\u610f\u306e\u5024\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/b>\u3002<\/p>\n\n\n\n<p>\u300c\u5024\u3092\u8fd4\u3059\u300d\u3068\u8a00\u3063\u3066\u3082\u30a4\u30e1\u30fc\u30b8\u3057\u306b\u304f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002\u3053\u308c\u306f\u7c21\u5358\u306b\u8a00\u3046\u3068\u3001\u4f55\u3089\u304b\u306e\u51e6\u7406\u3092\u3057\u305f\u7d50\u679c\u3092\u300c\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u4f1d\u3048\u308b\u300d\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function multiply( num1, num2 ) {\n\n    return num1 * num2;\n\n}\n\nconsole.log( multiply(5, 2) );<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">10<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300cmultiply()\u300d\u306b2\u3064\u306e\u5f15\u6570\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u304a\u308a\u3001\u5b9f\u884c\u6642\u306b\u6570\u5024\u3092\u5f53\u3066\u306f\u3081\u3066\u3044\u307e\u3059\u3002\u51e6\u7406\u306e\u5185\u5bb9\u3068\u3057\u3066\u306f\u3001\u5f15\u6570\u300cnum1\u300d\u300cnum2\u300d\u3092\u639b\u3051\u7b97\u3057\u3066\u304b\u3089return\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u3067return\u3092\u8a18\u8ff0\u3059\u308b\u3060\u3051\u3067\u3001\u639b\u3051\u7b97\u3092\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3059\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u8a3c\u62e0\u306b\u3001console.log()\u306e\u4e2d\u3067\u95a2\u6570\u3092\u305d\u306e\u307e\u307e\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5b9f\u884c\u7d50\u679c\u306b\u306f\u639b\u3051\u7b97\u306e\u7d50\u679c\u304c\u51fa\u529b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u305f\u3042\u3068\u3001\u51e6\u7406\u5185\u5bb9\u306e\u7d50\u679c\u3092console.log()\u3078\u4f1d\u3048\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u623b\u308a\u5024\u3092\u4f7f\u3063\u3066\u6761\u4ef6\u5206\u5c90\u3059\u308b<\/h3>\n\n\n\n<p>return\u6587\u3092\u6d3b\u7528\u3059\u308b\u3068if\u6587\u306a\u3069\u306e\u6761\u4ef6\u5f0f\u306b\u3082\u5fdc\u7528\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u5148\u307b\u3069\u4f5c\u6210\u3057\u305f\u300cmultiply()\u300d\u3092\u4f7f\u3063\u3066\u8a66\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">if( multiply(5, 2) &gt; 5) {\n\n    console.log( '5\u3088\u308a\u3082\u5927\u304d\u3044' );\n\n}\nelse {\n\n    console.log( '5\u3088\u308a\u3082\u5c0f\u3055\u3044');\n\n}<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">5\u3088\u308a\u3082\u5927\u304d\u3044<\/pre>\n\n\n\n<p>\u5148\u307b\u3069\u4f5c\u6210\u3057\u305f\u300cmultiply()\u300d\u306f2\u3064\u306e\u5f15\u6570\u3092\u639b\u3051\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3059\u95a2\u6570\u3067\u3057\u305f\u3088\u306d\uff1f<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001IF\u6587\u306e\u6761\u4ef6\u5f0f\u306bmultiply()\u3092\u305d\u306e\u307e\u307e\u5f53\u3066\u3081\u308b\u3053\u3068\u3067\u3001\u300c10 &gt; 5\u300d\u3068\u3044\u3046\u6761\u4ef6\u5f0f\u3068\u540c\u3058\u306b\u306a\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306breturn\u6587\u3092\u4f7f\u3048\u3070\u3001<b>\u95a2\u6570\u3092\u666e\u901a\u306e\u5024\u3068\u3057\u3066\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b<\/b>\u306e\u3067\u5fdc\u7528\u7bc4\u56f2\u304c\u5e83\u304f\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306ereturn\u6587\u306b\u3064\u3044\u3066\u3001\u3055\u3089\u306a\u308b\u6d3b\u7528\u4e8b\u4f8b\u3084\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u6b21\u306e\u8a18\u4e8b\u3067\u3082\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<p>&gt;&gt;<a href=\"https:\/\/www.sejuku.net\/blog\/28728\" target=\"_blank\" rel=\"noopener noreferrer\">return\u306e\u4f7f\u3044\u65b9\u3068\u623b\u308a\u5024\u30fbfalse\u306e\u307e\u3068\u3081\uff01<\/a><\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">function\u306ethis\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>JavaScript\u3067\u6271\u3046this\u306f\u3001\u95a2\u6570\u3092\u5229\u7528\u3059\u308b\u6642\u306b\u6ce8\u610f\u70b9\u3059\u308b\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u3067this\u306e\u610f\u5473\u304c\u7570\u306a\u308b\u306e\u3067\u3001\u3053\u3053\u3067\u6539\u3081\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u95a2\u6570\u5185\u306b\u304a\u3051\u308bthis\u306e\u5024<\/h3>\n\n\n\n<p>\u307e\u305a\u6700\u521d\u306bfunction(\u95a2\u6570)\u5185\u3067this\u3092\u4f7f\u3063\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample1() {\n    console.log( this );  \/\/\u2460\u306ethis\n    \n    function sample2() {\n\n        console.log( this );  \/\/\u2461\u306ethis\n\n    }\n    sample2();\n}\n\nsample1();<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Window {stop: function, open: function, alert: function\u2026}\nWindow {stop: function, open: function, alert: function\u2026}<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300csample1()\u300d\u95a2\u6570\u3092\u4f5c\u6210\u3057\u3066\u305d\u306e\u4e2d\u3078\u3055\u3089\u306b\u5225\u306e\u95a2\u6570\u300csample2()\u300d\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u306e\u95a2\u6570\u5185\u3067this\u306e\u4e2d\u8eab\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3069\u3061\u3089\u3082\u30b0\u30ed\u30fc\u30d0\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08Window\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001\u95a2\u6570\u5185\u306ethis\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u72b6\u614b\u3067\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e1\u30bd\u30c3\u30c9\u5185\u306b\u304a\u3051\u308bthis\u306e\u5024<\/h3>\n\n\n\n<p>\u4eca\u5ea6\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5185\u3067\u4f5c\u6210\u3059\u308b\u95a2\u6570\uff08\u30e1\u30bd\u30c3\u30c9\uff09\u3067this\u3092\u4f7f\u3063\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var obj = {\n    text: 'hello',\n    obj: this,  \/\/\u2460\u306ethis\n\n    myObj: function() {\n\n        return this;  \/\/\u2461\u306ethis\n\n    }\n}\n\nconsole.log( obj.obj );\nconsole.log( obj.myObj() );<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Window {stop: function, open: function, alert: function\u2026}\nObject {text: \"hello\", obj: Window, myObj...}<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001obj\u3068\u3044\u3046\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u4e2d\u306b\u300cmyObj\u300d\u3068\u3044\u3046\u95a2\u6570\uff08\u30e1\u30bd\u30c3\u30c9\uff09\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u2460\u306ethis\u306fWindow\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u304c\u3001\u2461\u306ethis\u306f\u4f5c\u6210\u3057\u305fobj\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u81ea\u8eab\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5185\u3067\u306ffunction(\u95a2\u6570)\u306e\u4e2d\u3068\u5916\u3067<b>this\u306e\u4e2d\u8eab\u304c\u5909\u5316\u3059\u308b<\/b>\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>this\u306e\u4e2d\u8eab\u306e\u5909\u5316\u306b\u3064\u3044\u3066\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30b3\u30fc\u30c9\u4f8b\u306b\u3088\u308b\u691c\u8a3c\u7d50\u679c\u3084Form\u306b\u304a\u3051\u308b\u6319\u52d5\u306e\u89e3\u8aac\u306a\u3069\u3092\u4e0b\u8a18\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<br>\u3053\u3061\u3089\u3082\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<p>&gt;&gt;<a href=\"https:\/\/www.sejuku.net\/blog\/29389\" target=\"_blank\" rel=\"noopener noreferrer\">this\u306e\u610f\u5473\u3068\u4f7f\u3044\u65b9\u3092\u521d\u3081\u3066\u5b66\u3076\u30b3\u30c4\u307e\u3068\u3081\uff01<\/a><\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a2\u30ed\u30fc\u95a2\u6570\u306b\u304a\u3051\u308bthis\u306e\u5024<\/h3>\n\n\n\n<p>\u4eca\u5ea6\u306f\u3001\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u4f7f\u3063\u305f\u5834\u5408\u306ethis\u304c\u3069\u306e\u3088\u3046\u306a\u5024\u306b\u306a\u308b\u306e\u304b\u3082\u5408\u308f\u305b\u3066\u898b\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u30a2\u30ed\u30fc\u95a2\u6570\u306e\u7279\u5fb4\u3068\u3057\u3066\u3001\u81ea\u8eab\u306ethis\u3092\u6301\u305f\u306a\u3044\u305f\u3081\u3001\u5b9a\u7fa9\u3055\u308c\u305f\u77ac\u9593\u306e\u30b9\u30b3\u30fc\u30d7\u306ethis\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u3068\u3044\u3046\u6027\u8cea\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u4f8b\u3092\u901a\u3057\u3066\u3001\u3053\u306e\u6319\u52d5\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var name = '\u592a\u90ce\u3055\u3093';\n\nvar obj = {\n  name: '\u7530\u4e2d\u3055\u3093',\n\n  myFunc: function() {\n    console.log(this.name);\n  },\n  \n  myFunc2: () =&gt; console.log(this.name)\n}\n\nobj.myFunc();  \/\/ \u7530\u4e2d\u3055\u3093\nobj.myFunc2(); \/\/ \u592a\u90ce\u3055\u3093\n<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5185\u306e\u4e21\u65b9\u3067<code>name<\/code>\u3068\u3044\u3046\u5909\u6570\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>myFunc()<\/code>\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u901a\u5e38\u306e\u95a2\u6570\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u3053\u306e\u95a2\u6570\u306e<code>this<\/code>\u306f<code>obj<\/code>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u300c\u7530\u4e2d\u3055\u3093\u300d\u3068\u51fa\u529b\u3055\u308c\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3067\u3001<code>myFunc2()<\/code>\u306f\u30a2\u30ed\u30fc\u95a2\u6570\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u304a\u308a\u3001\u3053\u306e\u95a2\u6570\u306e<code>this<\/code>\u306f\u30a2\u30ed\u30fc\u95a2\u6570\u304c\u5b9a\u7fa9\u3055\u308c\u305f\u6642\u70b9\u306e\u30b9\u30b3\u30fc\u30d7\u306e<code>this<\/code>\u3001\u3059\u306a\u308f\u3061\u30b0\u30ed\u30fc\u30d0\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u3067\u5b9a\u7fa9\u3055\u308c\u305f<code>name<\/code>\u306e\u5024\u300c\u592a\u90ce\u3055\u3093\u300d\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u30a2\u30ed\u30fc\u95a2\u6570\u306b\u304a\u3051\u308b<code>this<\/code>\u306e\u6319\u52d5\u3068\u901a\u5e38\u306e\u95a2\u6570\u306b\u304a\u3051\u308b<code>this<\/code>\u306e\u6319\u52d5\u306e\u9055\u3044\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u306e\u30b9\u30b3\u30fc\u30d7\u306b\u3064\u3044\u3066<\/h2>\n\n\n\n<p>function(\u95a2\u6570)\u3067\u6271\u3046\u5909\u6570\u306f\u300c\u30b9\u30b3\u30fc\u30d7\u300d\u306b\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3001\u5408\u308f\u305b\u3066\u7d39\u4ecb\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3082\u305d\u3082\u300c\u30b9\u30b3\u30fc\u30d7\u300d\u3068\u3044\u3046\u306e\u306f\u5909\u6570\u304c\u5229\u7528\u3067\u304d\u308b\u7bc4\u56f2\u306e\u3053\u3068\u3067\u3001<b>\u95a2\u6570\u5185\u3067\u5ba3\u8a00\u3057\u305f\u5909\u6570\u3068\u95a2\u6570\u5916\u3067\u5ba3\u8a00\u3057\u305f\u5909\u6570\u3067\u306f\u6271\u3048\u308b\u7bc4\u56f2\u304c\u7570\u306a\u308b\u306e\u3067\u3059<\/b>\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var num1 = 10;\n\nfunction sample() {\n  var num2 = 100;\n  \n  console.log(num1);\n}\n\nsample();\n\nconsole.log(num2);\n<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">10\n\nnum2 is not defined\n<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5909\u6570\u300cnum1\u300d\u304c\u95a2\u6570\u5916\u3067\u5ba3\u8a00\u3055\u308c\u3066\u304a\u308a\u3001\u5909\u6570\u300cnum2\u300d\u304c\u95a2\u6570\u5185\u3067\u5ba3\u8a00\u3055\u308c\u3066\u3044\u308b\u70b9\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u300csample()\u300d\u3092\u5b9f\u884c\u3059\u308b\u3068\u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30b0\u306b\u300cnum1\u300d\u306e\u5024\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002\u300cnum1\u300d\u306f\u95a2\u6570\u5916\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u3067\u3059\u304c\u3001\u95a2\u6570\u5185\u3067\u3082\u5229\u7528\u3067\u304d\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u9006\u306b\u95a2\u6570\u5185\u3067\u5ba3\u8a00\u3055\u308c\u305f\u300cnum2\u300d\u306f\u95a2\u6570\u5916\u3067\u5229\u7528\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001<b>\u95a2\u6570\u5185\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u306f\u95a2\u6570\u5185\u3067\u3057\u304b\u5229\u7528\u3067\u304d\u305a\u3001\u95a2\u6570\u5916\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u306f\u95a2\u6570\u5185\u3067\u3082\u5229\u7528\u3067\u304d\u308b<\/b>\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">function(\u95a2\u6570)\u3092\u3082\u3063\u3068\u6d3b\u7528\u3057\u3088\u3046<\/h2>\n\n\n\n<p>\u3053\u3053\u307e\u3067\u306e\u77e5\u8b58\u3060\u3051\u3067\u3082\u3001function(\u95a2\u6570)\u3092\u5341\u5206\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u3088\u308a\u4f7f\u3044\u3053\u306a\u305b\u308b\u3088\u3046\u3001\u3055\u3089\u306b\u77e5\u8b58\u3092\u6df1\u3081\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u3092\u3088\u308a\u6d3b\u7528\u3057\u3066\u3044\u304f\u305f\u3081\u306barguments\u3068\u3044\u3046\u3082\u306e\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">arguments\u3068\u306f\uff1f<\/h3>\n\n\n\n<p>arguments\u306f\u3001<b>\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u969b\u306b\u81ea\u52d5\u3067\u751f\u6210\u3055\u308c\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/b>\u3067\u3059\u3002<br>\u914d\u5217\u3068\u540c\u3058\u3088\u3046\u306b\u3001\u6dfb\u5b57\u3068\u5024\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>arguments\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001<b>\u95a2\u6570\u306e\u5f15\u6570\u3092\u5236\u5fa1\u3067\u304d\u308b\u3046\u3048\u6761\u4ef6\u5206\u5c90\u3092\u884c\u3046\u3053\u3068\u3082\u53ef\u80fd<\/b>\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">arguments\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5f15\u6570\u3092\u53d6\u5f97<\/h3>\n\n\n\n<p>JavaScript\u306e\u5f15\u6570\u306f\u30011\u3064\u3057\u304b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u306b\u3082\u95a2\u308f\u3089\u305a\u3001\u8907\u6570\u306e\u5f15\u6570\u3092\u6307\u5b9a\u3057\u3066\u3082\u5b9f\u884c\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample( text ) {\n\n    console.log( text );\n\n}\n\nsample( '\u30ea\u30f3\u30b4', '\u30d0\u30ca\u30ca', '\u30e1\u30ed\u30f3' );<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u30ea\u30f3\u30b4<\/pre>\n\n\n\n<p>\u300csample()\u300d\u306b\u306f1\u3064\u306e\u5f15\u6570\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u5b9f\u884c\u6642\u306b3\u3064\u306e\u6587\u5b57\u5217\uff08\u5f15\u6570\uff09\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3088\u306d\uff1f<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u5b9f\u884c\u7d50\u679c\u3092\u898b\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u304a\u3089\u305a\u3001\u81ea\u52d5\u7684\u306b1\u3064\u76ee\u306e\u5f15\u6570\u3092\u4f7f\u3063\u3066\u5b9f\u884c\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307b\u304b\u306b\u3082\u3001\u307e\u3063\u305f\u304f\u5f15\u6570\u3092\u5f53\u3066\u306f\u3081\u305a\u306b\u5b9f\u884c\u3057\u3066\u3082\u300cundefined\u300d\u306b\u306a\u308b\u3060\u3051\u3067\u30a8\u30e9\u30fc\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u3001function(\u95a2\u6570)\u304c\u547c\u3073\u51fa\u3055\u308c\u305f\u6642\u306b\u81ea\u52d5\u3067\u751f\u6210\u3055\u308c\u308barguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u304a\u304b\u3052\u306a\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u30b3\u30fc\u30c9\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample( text ) {\n    \n    console.log( arguments );  \/\/ arguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u51fa\u529b\n\n}\n\nsample( '\u30ea\u30f3\u30b4', '\u30d0\u30ca\u30ca', '\u30e1\u30ed\u30f3' );<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Arguments(3) [\"\u30ea\u30f3\u30b4\", \"\u30d0\u30ca\u30ca\", \"\u30e1\u30ed\u30f3\",\u2026...]<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300csample()\u300d\u95a2\u6570\u306e\u4e2d\u3067arguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30b0\u306b\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c\u3092\u898b\u308b\u3068\u3001sample()\u3092\u5b9f\u884c\u3057\u305f\u6642\u306b\u6307\u5b9a\u3057\u305f3\u3064\u306e\u5f15\u6570\u304c\u914d\u5217\u3068\u3057\u3066\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u81ea\u52d5\u3067\u751f\u6210\u3055\u308c\u305farguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u5f15\u6570\u306e\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u70b9\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>\uff3c\u3000\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u30681on1\u30ec\u30c3\u30b9\u30f3\u304c\u53ef\u80fd\uff01\uff0f<\/strong><br>    <a class=\"sc_button2\" href=\"https:\/\/www.sejuku.net\/terakoya\/lp3\/?cid=btn_article_plus\">\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u8a73\u7d30\u3092\u898b\u308b<\/a>\n    <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">arguments\u3092\u4f7f\u3063\u305f\u6761\u4ef6\u5206\u5c90<\/h3>\n\n\n\n<p>arguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5fdc\u7528\u3059\u308b\u3068\u3001<b>\u5f15\u6570\u3092\u610f\u56f3\u7684\u306b\u64cd\u4f5c\u3059\u308b<\/b>\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u5f15\u6570\u3092\u307e\u3063\u305f\u304f\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u6642\u306b\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3057\u305f\u3051\u308c\u3070\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function sample( text ) {\n    \n    if( !arguments.length ) {\n        console.error( '\u5f15\u6570\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\uff01' );\n    }\n    \n}\n\nsample();<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u5f15\u6570\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u30011\u3064\u3060\u3051\u306e\u5f15\u6570\u3092\u53d6\u308bsample()\u3068\u3044\u3046\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u5b9f\u884c\u3059\u308b\u6642\u306b\u4f55\u3082\u5f15\u6570\u3092\u6307\u5b9a\u3057\u3066\u3044\u306a\u3044\u306e\u3067arguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e2d\u8eab\u306f\u7a7a\u3063\u307d\u3067\u3059\u3088\u306d\uff1f<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001\u4e2d\u8eab\u306e\u5024\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u300carguments.length\u300d\u3068\u3059\u308c\u3070\u3001\u7d50\u679c\u304c\u300c0\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u300c0\u300d\u306fIF\u6587\u306a\u3069\u306e\u3067\u6761\u4ef6\u5f0f\u3067\u5229\u7528\u3059\u308b\u3068false\u3068\u3044\u3046\u610f\u5473\u306b\u306a\u308b\u306e\u3067\u3001\u5f15\u6570\u306e\u6709\u7121\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90\u304c\u53ef\u80fd\u306b\u306a\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u4eca\u56de\u306f\u3001JavaScript\u306b\u304a\u3051\u308bfunction(\u95a2\u6570)\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u307e\u3057\u305f\uff01<\/p>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u3082\u30461\u5ea6\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"box01\">\n\n\n\n<ul class=\"wp-block-list\">\n<li><b>function(\u95a2\u6570)\u306f\u95a2\u6570\u5ba3\u8a00\u30fb\u95a2\u6570\u5f0f\u30fb\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3068\u3044\u30463\u7a2e\u985e\u306e\u5229\u7528\u65b9\u6cd5\u304c\u3042\u308b<\/b><\/li>\n\n\n\n<li><b>\u95a2\u6570\u540d\u3092\u305d\u306e\u307e\u307e\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u547c\u3073\u51fa\u3057(\u5b9f\u884c)\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b<\/b><\/li>\n\n\n\n<li><b>\u5f15\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u591a\u5f69\u306a\u30b1\u30fc\u30b9\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u95a2\u6570\u3092\u4f5c\u6210\u3067\u304d\u308b<\/b><\/li>\n\n\n\n<li><b>\u623b\u308a\u5024(return\u6587)\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u4f55\u3089\u304b\u306e\u51e6\u7406\u3092\u884c\u3063\u305f\u7d50\u679c\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u308b<\/b><\/li>\n\n\n\n<li><b>\u95a2\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u5185\u306b\u304a\u3051\u308bthis\u306f\u305d\u308c\u305e\u308c\u610f\u5473\u304c\u7570\u306a\u308b<\/b><\/li>\n\n\n\n<li><b>\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u6642\u306b\u81ea\u52d5\u751f\u6210\u3055\u308c\u308barguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u5f15\u6570\u306e\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b<\/b><\/li>\n\n\n\n<li><b>\u95a2\u6570\u306e\u30d6\u30ed\u30c3\u30af\u5185\u3067\u5ba3\u8a00\u3001\u5b9a\u7fa9\u3057\u305f\u5909\u6570\u306f\u4f7f\u7528\u3067\u304d\u308b\u7bc4\u56f2\u306b\u5236\u9650\u304c\u3042\u308b<\/b><\/li>\n<\/ul>\n\n\n<\/div>\n\n\n\n<p>\u4e0a\u8a18\u5185\u5bb9\u3092\u8e0f\u307e\u3048\u3066\u3001\u305c\u3072\u81ea\u5206\u3067\u3082\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u7e70\u308a\u8fd4\u3057\u66f8\u3044\u3066\u307f\u3066\u7a4d\u6975\u7684\u306b\u53d6\u308a\u5165\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3057\u3066\u3044\u308b\u3068\u3001\u51e6\u7406\u30921\u3064\u306b\u307e\u3068\u3081\u3066\u7ba1\u7406\u3057\u305f\u3044\u6642\u3084\u3001\u540c\u3058\u51e6\u7406\u3092\u4f7f\u3044\u307e\u308f\u3057\u305f\u308a\u3057\u305f\u3044\u6642\u3063\u3066\u3042\u308a\u307e\u3059\u3088\u306d\u3002 \u4eca\u56de\u306f\u3001\u305d\u3093\u306a\u6642\u306b\u4f7f\u3048\u308bfunction(\u95a2\u6570)\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01 \u3053\u306e\u8a18\u4e8b\u306f\u4e0b\u8a18\u306e\u6d41\u308c\u3067\u3001 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":69184,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"swell_btn_cv_data":"{\"2b3d06a9\":{\"pv\":9733,\"imp\":7260,\"click\":3},\"d34d364c\":{\"pv\":10053,\"imp\":7449,\"click\":4}}","footnotes":""},"categories":[2346],"tags":[1447,95],"class_list":["post-31671","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript-study","tag-function","tag-javascript"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u3010JavaScript\u5165\u9580\u3011function(\u95a2\u6570)\u306e\u4f7f\u3044\u65b9\u3001\u547c\u3073\u51fa\u3057\u30fb\u623b\u308a\u5024\u306a\u3069\u7dcf\u307e\u3068\u3081\uff01 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0<\/title>\n<meta name=\"description\" content=\"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010JavaScript\u5165\u9580\u3011function(\u95a2\u6570)\u306e\u4f7f\u3044\u65b9\u3001\u547c\u3073\u51fa\u3057\u30fb\u623b\u308a\u5024\u306a\u3069\u7dcf\u307e\u3068\u3081\uff01 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