{"id":98530,"date":"2022-12-02T14:26:01","date_gmt":"2022-12-02T05:26:01","guid":{"rendered":"https:\/\/www.sejuku.net\/blog\/?p=98530"},"modified":"2025-12-26T14:57:02","modified_gmt":"2025-12-26T05:57:02","slug":"javascript%e3%81%ae%e3%82%b3%e3%82%b3%e3%81%8c%e3%82%8f%e3%81%8b%e3%82%89%e3%81%aa%e3%81%84%ef%bc%81promise%e3%82%84%e9%96%a2%e6%95%b0%e3%81%aa%e3%81%a9%e3%83%9d%e3%82%a4%e3%83%b3%e3%83%88%e3%82%92","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/98530","title":{"rendered":"JavaScript\u306e\u30b3\u30b3\u304c\u308f\u304b\u3089\u306a\u3044\uff01Promise\u3084\u95a2\u6570\u306a\u3069\u30dd\u30a4\u30f3\u30c8\u3092\u7dcf\u5fa9\u7fd2"},"content":{"rendered":"\n<p><div class=\"box_voice\"><b><br>\u30b9\u30b3\u30fc\u30d7\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3001\u975e\u540c\u671f\u51e6\u7406\u306a\u3069\u96e3\u3057\u3044\u4ed5\u69d8\u304c\u591a\u3059\u304e\u308b<br>JavaScript\u306f\u5206\u304b\u308a\u306b\u304f\u3044\u6982\u5ff5\u304c\u591a\u304f\u3066\u306a\u304b\u306a\u304b\u5b66\u7fd2\u304c\u9032\u307e\u306a\u3044<br>\u30a8\u30e9\u30fc\u306e\u5bfe\u51e6\u65b9\u6cd5\u3063\u3066\u3069\u3046\u3059\u308b\u306e\u304c\u826f\u3044\u3093\u3060\u308d\u3046<br><\/b><\/div><\/p>\n\n\n\n<p>\u3053\u3093\u306b\u3061\u306f\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u307e\u3067200\u672c\u4ee5\u4e0a\u306b\u308f\u305f\u308aJavaScript\u306e\u6280\u8853\u8a18\u4e8b\u3092\u66f8\u3044\u3066\u304d\u305f\u30c6\u30c3\u30af\u30e9\u30a4\u30bf\u30fc\u306e\u30de\u30b5\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p>JavaScript\u306b\u306f\u72ec\u7279\u306e\u6982\u5ff5\u304c\u591a\u304f\u5b58\u5728\u3059\u308b\u305f\u3081\u3001\u521d\u5b66\u8005\u306e\u65b9\u306f\u306a\u304b\u306a\u304b\u52c9\u5f37\u304c\u601d\u3046\u3088\u3046\u306b\u3044\u304b\u306a\u304f\u3066\u56f0\u308b\u30b1\u30fc\u30b9\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u7279\u306b\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3084\u975e\u540c\u671f\u51e6\u7406\u306a\u3069\u306e\u7406\u89e3\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3057\u3066\u304f\u308b\u305f\u3081\u3001\u77e5\u3063\u3066\u3044\u308b\u306e\u3068\u77e5\u3089\u306a\u3044\u306e\u3068\u3067\u306f\u5927\u304d\u306a\u5dee\u304c\u751f\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u3053\u308c\u3089\u306e\u6982\u5ff5\u306f\u3069\u306e\u3088\u3046\u306b\u5b66\u7fd2\u3059\u308b\u306e\u304c\u826f\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u521d\u5fc3\u8005\u3067\u3082\u4eca\u65e5\u304b\u3089JavaScript\u306e\u30b3\u30b3\u304c\u308f\u304b\u3089\u306a\u3044\uff01\u3068\u3044\u3046\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u306b\u3064\u3044\u3066\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u306e\u3067\u3001\u305c\u3072\u6700\u5f8c\u307e\u3067\u8aad\u3093\u3067\u7406\u89e3\u3092\u6df1\u3081\u3066\u9802\u3051\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u4eba\u3067\u3082\u591a\u304f\u306e\u65b9\u304cJavaScript\u306e\u4e0d\u5b89\u3092\u89e3\u6d88\u3067\u304d\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u57fa\u672c\u7684\u306a\u6982\u5ff5<\/h2>\n\n\n\n<p>\u3053\u306e\u7ae0\u3067\u306f\u3001JavaScript\u306b\u304a\u3044\u3066\u3082\u3063\u3068\u3082\u57fa\u672c\u3068\u8a00\u3048\u308b\u6982\u5ff5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u4e3b\u306b\u3001\u5909\u6570\u3068\u30b9\u30b3\u30fc\u30d7\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5909\u6570\u306e\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p>JavaScript\u3067\u5909\u6570\u5ba3\u8a00\u3092\u3059\u308b\u6642\u306fvar \/ let \/ const\u306e\u3044\u305a\u308c\u304b\u3092\u5229\u7528\u3059\u308b\u308f\u3051\u3067\u3059\u304c\u3001\u57fa\u672c\u7684\u306b\u306f<b>let\u304bconst\u306e\u3069\u3061\u3089\u304b<\/b>\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u73fe\u72b6\u3067\u306f\u30d9\u30b9\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u306a\u305cvar\u3092\u4f7f\u308f\u306a\u3044\u307b\u3046\u304c\u826f\u3044\u306e\u304b\u306b\u3064\u3044\u3066\u306f\u3044\u304f\u3064\u304b\u7406\u7531\u304c\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u4ee5\u4e0b\u306e3\u70b9\u3092\u6291\u3048\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"box01\">\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5909\u6570\u306e\u5dfb\u304d\u4e0a\u3052\u73fe\u8c61<\/li>\n\n\n\n<li>\u591a\u91cd\u5ba3\u8a00\u3068\u518d\u4ee3\u5165<\/li>\n\n\n\n<li>\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7<\/li>\n<\/ul>\n\n\n<\/div>\n\n\n\n<p>\u5909\u6570\u306e\u5dfb\u304d\u4e0a\u3052\u73fe\u8c61\u3068\u3044\u3046\u306e\u306f\u3001\u5909\u6570\u304c\u3069\u3053\u3067\u5ba3\u8a00\u3055\u308c\u3066\u3082<b>\u5fc5\u305a\u5148\u982d(\u30b9\u30b3\u30fc\u30d7\u5185)\u3067\u5ba3\u8a00\u3055\u308c\u308b\u3088\u3046\u306a\u632f\u308b\u821e\u3044<\/b>\u3092\u884c\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306f\u5909\u6570sample\u3092\u5ba3\u8a00\u3059\u308b\u524d\u306bconsole.log()\u3067\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">console.log(sample);  \/\/ undefined\u304c\u51fa\u529b\u3055\u308c\u308b\n\nvar sample = 100;\n<\/pre>\n\n\n\n<p>\u666e\u901a\u306a\u3089\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u3059\u304c\u3001var\u306e\u5834\u5408\u306f\u5dfb\u304d\u4e0a\u3052\u304c\u884c\u308f\u308c\u3066\u30b3\u30fc\u30c9\u306e\u5148\u982d\u3067\u5909\u6570sample\u306b\u521d\u671f\u5024undefined\u304c\u4ee3\u5165\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5b9f\u884c\u7d50\u679c\u3067\u306fundefined\u304c\u51fa\u529b\u3055\u308c\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001var\u3092\u4f7f\u3046\u3068\u307e\u3063\u305f\u304f\u540c\u3058\u5909\u6570\u540d\u3092\u4f55\u5ea6\u3082\u591a\u91cd\u306b\u5ba3\u8a00\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var sample = 100;\nvar sample = 'abc';\nvar sample = 0;\n<\/pre>\n\n\n\n<p>\u4f55\u5ea6\u7e70\u308a\u8fd4\u3057\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3082\u3061\u308d\u3093\u3001\u5024\u3092\u518d\u4ee3\u5165\u3057\u3066\u3082\u30a8\u30e9\u30fc\u306f\u8d77\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var sample = 100;\n\nsample = 0;\n<\/pre>\n\n\n\n<p>\u3053\u308c\u306flet \/ const\u3092\u5229\u7528\u3059\u308b\u3068\u30a8\u30e9\u30fc\u3092\u51fa\u529b\u3057\u3066\u304f\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u7279\u306bconst\u306f\u5024\u306e\u518d\u4ee3\u5165\u3082\u30a8\u30e9\u30fc\u306b\u306a\u308b\u305f\u3081\u30df\u30b9\u306b\u6c17\u3065\u304d\u3084\u3059\u304f\u306a\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3088\u308a\u8a73\u3057\u3044let \/ const\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304a\u3088\u3073\u30b5\u30f3\u30d7\u30eb\u4e8b\u4f8b\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u8a18\u4e8b\u3067\u307e\u3068\u3081\u3066\u3044\u308b\u306e\u3067\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n            <a href=\"https:\/\/www.sejuku.net\/blog\/58868\" 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\/2018\/06\/javascript_thumb-150x86.png\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">JavaScript\u521d\u5fc3\u8005\u5fc5\u898b\uff01const\u3068\u306f\uff1f\u57fa\u790e\u306e\u57fa\u790e\u3092\u89e3\u8aac\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2025\u5e744\u670823\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n\n\n\n<p>\u307e\u305f\u3001\u30a8\u30e9\u30fc\u3092\u672a\u7136\u306b\u9632\u3050\u3068\u3044\u3046\u610f\u5473\u3067\u306fstrict\u30e2\u30fc\u30c9\u3092\u5229\u7528\u3059\u308b\u3068\u3044\u3046\u65b9\u6cd5\u3082\u3042\u308b\u306e\u3067\u3001\u307e\u3060\u77e5\u3089\u306a\u3044\u65b9\u306f\u6b21\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n            <a href=\"https:\/\/www.sejuku.net\/blog\/58342\" 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\/2018\/06\/eye_catch2-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010JavaScript\u5165\u9580\u3011strict\u30e2\u30fc\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30b3\u30fc\u30d7\u306e\u8003\u3048\u65b9<\/h3>\n\n\n\n<p>\u5148\u307b\u3069\u3001var\u3092\u4f7f\u308f\u306a\u3044\u307b\u3046\u304c\u826f\u3044\u7406\u7531\u3068\u3057\u3066\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7\u306b\u3064\u3044\u3066\u307e\u3060\u89e3\u8aac\u3057\u3066\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u305d\u3082\u305d\u3082\u3001\u30b9\u30b3\u30fc\u30d7\u3068\u306f\u3069\u3046\u3044\u3046\u610f\u5473\u304b\u3054\u5b58\u77e5\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n\n\n<p>\u7c21\u5358\u306b\u8a00\u3063\u3066\u3057\u307e\u3046\u3068\u3001<b>\u5909\u6570\u306a\u3069\u3092\u5229\u7528\u3067\u304d\u308b\u7bc4\u56f2<\/b>\u3092\u6c7a\u3081\u308b\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u6642\u7684\u306b\u3060\u3051\u4f7f\u3044\u305f\u3044\u5909\u6570\u3068\u304b\u4f55\u5ea6\u3082\u518d\u5229\u7528\u3057\u305f\u3044\u5909\u6570\u306a\u3069\u3044\u308d\u3044\u308d\u3042\u308b\u308f\u3051\u3067\u3059\u304c\u3001\u7bc4\u56f2\u3092\u5e83\u3052\u3059\u304e\u308b\u3068\u610f\u56f3\u305b\u305a\u306b\u5909\u6570\u3092\u66f8\u304d\u63db\u3048\u3066\u3057\u307e\u3046\u30ea\u30b9\u30af\u3082\u3042\u308b\u306e\u3067\u96e3\u3057\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u3001\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7\u3068\u3044\u3046\u306e\u306f\u3001IF\u6587\u3084for\u6587\u306a\u3069{ }\u3067\u56f2\u307e\u308c\u305f\u4e2d\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u3092\u5916\u5074\u3067\u3082\u5229\u7528\u3067\u304d\u308b\u304b\u3069\u3046\u304b\uff1f\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306ffor\u6587\u306e\u4e2d\u306b\u5909\u6570sample\u3092\u5ba3\u8a00\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">for(var i=0; i&lt;10; i++) {\n  var sample = i;\n}\n\nconsole.log(sample); \/\/ 9\u304c\u51fa\u529b\u3055\u308c\u308b\n<\/pre>\n\n\n\n<p>\u4e00\u822c\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306a\u3089{ }\u306e\u4e2d\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u306f\u5916\u5074\u3067\u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u304c\u3001var\u306e\u5834\u5408\u306ffor\u6587\u306e\u5916\u5074\u306b\u8a18\u8ff0\u3057\u305fconsole.log()\u3067\u3082\u5229\u7528\u3067\u304d\u308b\u306e\u3067\u3059\u3002\u3082\u3061\u308d\u3093for\u6587\u306e\u30ab\u30a6\u30f3\u30bf\u3068\u3057\u3066\u5229\u7528\u3057\u3066\u3044\u308b\u5909\u6570i\u3082\u5916\u5074\u3067\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001for\u6587\u304c\u7d42\u4e86\u3057\u3066\u3082\u5229\u7528\u3057\u3066\u3044\u305f\u5909\u6570\u306f\u307e\u3060\u751f\u304d\u3066\u3044\u308b\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u306a\u306e\u3067\u3059\u3002\u3057\u304b\u3057\u3001let \/ const\u3092\u4f7f\u3048\u3070{ }\u306e\u4e2d\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u306f\u305d\u306e\u4e2d\u3060\u3051\u3067\u3057\u304b\u4f7f\u3048\u306a\u3044\u306e\u3067\u3001\u5b89\u5fc3\u3057\u3066\u5229\u7528\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u30b9\u30b3\u30fc\u30d7\u306b\u3064\u3044\u3066\u3055\u3089\u306b\u6df1\u5800\u308a\u3057\u3066\u5b66\u7fd2\u3092\u9032\u3081\u305f\u3044\u65b9\u306f\u3001\u6b21\u306e\u8a18\u4e8b\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            <a href=\"https:\/\/www.sejuku.net\/blog\/23264\" 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\/2017\/05\/23264re-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010JavaScript\u5165\u9580\u3011\u5909\u6570\u306e\u30b9\u30b3\u30fc\u30d7\u3092\u5b8c\u5168\u30de\u30b9\u30bf\u30fc\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u306a\u8a00\u8a9e\u4ed5\u69d8<\/h2>\n\n\n\n<p>\u3053\u306e\u7ae0\u3067\u306f\u3001JavaScript\u3092\u5b66\u7fd2\u3059\u308b\u3046\u3048\u3067\u91cd\u8981\u3068\u306a\u308b\u6982\u5ff5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u4e3b\u306b\u3001\u95a2\u6570\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u30fbPromise\u306b\u3064\u3044\u3066\u5b66\u3093\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u95a2\u6570\u306e\u57fa\u790e\u77e5\u8b58<\/h3>\n\n\n\n<p>\u95a2\u6570\u306f\u3055\u307e\u3056\u307e\u306a\u51e6\u7406\u30921\u3064\u306b\u307e\u3068\u3081\u305f\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u3067\u518d\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u4fbf\u5229\u306a\u3082\u306e\u3067\u3059\u3002\u95a2\u6570\u306e\u4e3b\u306a\u6a5f\u80fd\u3068\u3057\u3066\u3001\u307e\u305a\u306f\u5f15\u6570\u30fbreturn\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u5f15\u6570\u306f\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u969b\u306b\u3001\u4efb\u610f\u306e\u5024\u3092\u53d7\u3051\u53d6\u3063\u3066\u51e6\u7406\u3092\u884c\u3046\u969b\u306b\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u6b21\u306e\u95a2\u6570\u306f\u4efb\u610f\u306e\u540d\u524d\u3092\u53d7\u3051\u53d6\u308b\u5f15\u6570\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function user(name) {\n  console.log('\u3042\u306a\u305f\u306f' + name + '\u3055\u3093\u3067\u3059\u306d');\n}\n  \nuser('\u592a\u90ce');\n<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u3042\u306a\u305f\u306f\u592a\u90ce\u3055\u3093\u3067\u3059\u306d\n<\/pre>\n\n\n\n<p>\u95a2\u6570\u3092\u5b9a\u7fa9\u3059\u308b\u969b\u306b( )\u306e\u4e2d\u3078\u4efb\u610f\u306e\u5909\u6570\u3092\u6307\u5b9a\u3059\u308b\u3060\u3051\u3067\u5f15\u6570\u306f\u4f5c\u308c\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u5909\u6570name\u3092\u8a2d\u5b9a\u3057\u3066\u304a\u308a\u3001user()\u3092\u5b9f\u884c\u3059\u308b\u969b\u306b\u3010\u592a\u90ce\u3011\u3068\u3044\u3046\u540d\u524d\u3092\u6307\u5b9a\u3057\u307e\u3057\u305f\u3002\u305d\u306e\u7d50\u679c\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30b0\u306b\u306f\u540d\u524d\u3092\u5229\u7528\u3057\u305f\u51fa\u529b\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>return\u306b\u95a2\u3057\u3066\u306f\u3001\u95a2\u6570\u5185\u3067<b>\u4efb\u610f\u306e\u5024\u3092\u8fd4\u308a\u5024\u3068\u3057\u3066\u8fd4\u3057\u3066\u304f\u308c\u308b<\/b>\u3088\u3046\u306b\u306a\u308b\u6a5f\u80fd\u3067\u3059\u3002\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u4f8b\u3067\u306f\u30012\u3064\u306e\u5f15\u6570\u3092\u639b\u3051\u7b97\u3057\u305f\u7d50\u679c\u3092return\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function calc(num1, num2) {\n  return num1 * num2;\n}\n  \nconsole.log(calc(2, 5));\n<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">10\n<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306breturn\u306b\u7d9a\u3051\u3066\u8fd4\u3057\u305f\u3044\u5024\u3092\u8a18\u8ff0\u3059\u308b\u3068\u3001\u95a2\u6570\u3092\u5b9f\u884c\u3057\u305f\u969b\u306b\u305d\u306e\u5024\u304c\u8fd4\u308a\u5024\u306b\u306a\u308b\u308f\u3051\u3067\u3059\u3002\u4e0a\u8a18\u306e\u4f8b\u3067\u3042\u308c\u3070\u3001\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u3068\u639b\u3051\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u306b\u3064\u3044\u3066\u57fa\u672c\u7684\u306a\u77e5\u8b58\u304b\u3089\u3055\u3089\u306a\u308b\u6d3b\u7528\u65b9\u6cd5\u307e\u3067\u5b66\u7fd2\u3057\u305f\u3044\u65b9\u306f\u3001\u6b21\u306e\u8a18\u4e8b\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            <a href=\"https:\/\/www.sejuku.net\/blog\/31671\" 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\/2018\/08\/javascript-tutorial-top-150x86.png\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-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<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2025\u5e7412\u670829\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n\n\n\n<h3 class=\"wp-block-heading\">\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3068\u306f\u4f55\u306a\u306e\u304b<\/h3>\n\n\n\n<p>JavaScript\u3092\u7279\u5fb4\u3065\u3051\u308b\u6a5f\u80fd\u3068\u3057\u3066\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u7c21\u5358\u306b\u8a00\u3046\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6700\u5c0f\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3042\u308a\u3001\u3053\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3053\u3068\u3067\u3055\u307e\u3056\u307e\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u306fJavaScript\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3059\u3079\u3066\u3053\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u304c\u30d9\u30fc\u30b9\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u8a00\u3044\u63db\u3048\u308c\u3070\u3059\u3079\u3066\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3092\u6301\u3063\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4fbf\u5229\u306a\u3053\u3068\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3082\u3063\u3068\u3082\u5206\u304b\u308a\u3084\u3059\u3044\u4f8b\u3068\u3057\u3066\u306f\u3001<b>\u30e1\u30bd\u30c3\u30c9\u5b9a\u7fa9\u306e\u52b9\u7387\u5316<\/b>\u304c\u6319\u3052\u3089\u308c\u308b\u3067\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">const User = function(name, age) {\n  this.name = name;\n  this.age = age;\n  \n  this.getName = function() {\n    return this.name;\n  }\n}\n<\/pre>\n\n\n\n<p>\u3053\u308c\u306f2\u3064\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\uff08name, age\uff09\u30681\u3064\u306e\u30e1\u30bd\u30c3\u30c9\uff08getName\uff09\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<p>\u4f7f\u3044\u65b9\u3068\u3057\u3066\u306fnew\u3092\u5229\u7528\u3057\u3066\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">const taro = new User('\u592a\u90ce', 30);\n  \nconsole.log(taro.getName());\n<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u592a\u90ce\n<\/pre>\n\n\n\n<p>\u7279\u306b\u554f\u984c\u306a\u3044\u3088\u3046\u306b\u601d\u3048\u307e\u3059\u304c\u3001\u3053\u306e\u72b6\u614b\u3060\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u305f\u3073\u306b\u30e1\u30bd\u30c3\u30c9\u3082\u4e00\u7dd2\u306b\u30b3\u30d4\u30fc\u3055\u308c\u308b\u308f\u3051\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u304c100\u500b\u3042\u3063\u305f\u3068\u3057\u305f\u3089\u6bce\u56de\u305d\u308c\u3089\u3082\u4e00\u7dd2\u306b\u30b3\u30d4\u30fc\u3055\u308c\u308b\u306e\u3067\u7121\u99c4\u306a\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3068\u3053\u308d\u304c\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3092\u5229\u7528\u3059\u308b\u3068\u3053\u306e\u554f\u984c\u3092\u89e3\u6d88\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u90e8\u5206\u3060\u3051\u3092\u5207\u308a\u96e2\u3057\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3078\u5b9a\u7fa9\u3059\u308b\u3088\u3046\u306b\u5909\u66f4\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">const User = function(name, age) {\n  this.name = name;\n  this.age = age;\n}\n\n\nUser.prototype.getName = function() {\n    return this.name;\n}\n<\/pre>\n\n\n\n<p>\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5b9a\u7fa9\u3060\u3051\u306b\u306a\u3063\u3066\u30b9\u30c3\u30ad\u30ea\u3057\u307e\u3057\u305f\u306d\u3002<\/p>\n\n\n\n<p>\u30e1\u30bd\u30c3\u30c9\u90e8\u5206\u306f\u3010\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf.prototype\u3011\u306b\u7d9a\u3051\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u30d9\u30fc\u30b9\u306b\u3057\u3066\u3044\u308b\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306b\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u30b3\u30d4\u30fc\u3057\u306a\u304f\u3066\u3082\u5229\u7528\u3067\u304d\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306b\u3064\u3044\u3066\u3001\u3055\u3089\u306b\u8a73\u3057\u3044\u77e5\u8b58\u3084\u7d99\u627f\u3078\u306e\u5fdc\u7528\u306a\u3069\u306b\u3064\u3044\u3066\u6b21\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u5408\u308f\u305b\u3066\u53c2\u8003\u306b\u3059\u308b\u3068\u3088\u308a\u7406\u89e3\u304c\u9032\u307f\u307e\u3059\u3088\u3002<\/p>\n\n\n            <a href=\"https:\/\/www.sejuku.net\/blog\/47722\" 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\/2018\/04\/javascript-prototype-top2-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010JavaScript\u5165\u9580\u3011\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7(prototype)\u306e\u4f7f\u3044\u65b9\u3068\u7d99\u627f\u307e\u3068\u3081\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n\n\n\n<h3 class=\"wp-block-heading\">Promise\u306b\u3088\u308b\u975e\u540c\u671f\u51e6\u7406<\/h3>\n\n\n\n<p>JavaScript\u306f\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u305f\u3081\u3001\u666e\u901a\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u3068\u4e0a\u304b\u3089\u9806\u756a\u306b\u51e6\u7406\u3055\u308c\u3066\u3044\u304d\u307e\u3059\u3002\u3053\u308c\u3092\u540c\u671f\u51e6\u7406\u3068\u8a00\u3046\u306e\u3067\u3059\u304c\u3001\u9014\u4e2d\u3067\u6642\u9593\u306e\u639b\u304b\u308b\u51e6\u7406\u3092\u66f8\u304f\u3068<b>\u7d42\u4e86\u3059\u308b\u307e\u3067\u30b9\u30c8\u30c3\u30d7\u3057\u3066\u3057\u307e\u3046<\/b>\u3068\u3044\u3046\u6b20\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u901a\u4fe1\u3092\u3057\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u3088\u3046\u306a\u51e6\u7406\u3092\u66f8\u304f\u3068\u3001\u7d50\u679c\u3092\u5f97\u3089\u308c\u308b\u307e\u3067\u51e6\u7406\u304c\u30b9\u30c8\u30c3\u30d7\u3057\u3066\u3057\u307e\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u767b\u5834\u3059\u308b\u306e\u304c\u975e\u540c\u671f\u51e6\u7406\u3068\u3044\u3046\u6280\u8853\u3067\u3001\u6642\u9593\u306e\u639b\u304b\u308b\u51e6\u7406\u3092\u5b9f\u884c\u3057\u3066\u3082\u3059\u3050\u306b\u6b21\u306e\u51e6\u7406\u306b\u79fb\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u4ed6\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u9593\u306b\u7d50\u679c\u3092\u53d6\u5f97\u3057\u305f\u3089\u3001\u305d\u306e\u307e\u307e\u7d9a\u304d\u306e\u51e6\u7406\u3092\u59cb\u3081\u3089\u308c\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u540c\u671f\u51e6\u7406\n\u2193\n\u975e\u540c\u671f\u51e6\u7406 \u2192 \u7d50\u679c\u304c\u8fd4\u3063\u3066\u304d\u305f\u3089\u51e6\u7406\u3092\u7d9a\u3051\u308b\n\u2193 \n\u540c\u671f\u51e6\u7406\uff08\u524d\u306e\u51e6\u7406\u3092\u5f85\u305f\u306a\u304f\u3066\u3082OK\uff09\n\u2193\n\u540c\u671f\u51e6\u7406\n<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u4fbf\u5229\u306a\u6280\u8853\u3092\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u308c\u308b\u306e\u304cPromise\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>Promise\u306e\u4f7f\u3044\u65b9\u306f\u7c21\u5358\u3067\u3001\u307e\u305a\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u5b9f\u884c\u3057\u305f\u3044\u51e6\u7406\u3092\u95a2\u6570\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var result = new Promise(function(resolve) {\n \n    \/\/ \u3053\u3053\u306b\u51e6\u7406\u3092\u8a18\u8ff0\u3059\u308b\n\n    \/\/ \u51e6\u7406\u306e\u7d50\u679c\u3092resolve\u306b\u8a2d\u5b9a\u3059\u308b\n    resolve(\u3010\u51e6\u7406\u306e\u7d50\u679c\u3011);\n \n})\n<\/pre>\n\n\n\n<p>\u4f8b\u3048\u3070\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u305d\u306e\u30c7\u30fc\u30bf\u3092resolve\u306e\u5f15\u6570\u306b\u8a2d\u5b9a\u3059\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u3001then\u3092\u4f7f\u3046\u3068\u7d50\u679c\u3092\u53d6\u5f97\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u4efb\u610f\u306e\u51e6\u7406\u3092\u7d9a\u3051\u3066\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">result.then( function(data){ \n \n    console.log(data);\n \n} );\n<\/pre>\n\n\n\n<p>Promise\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u77e5\u8b58\u3092\u6df1\u3081\u305f\u3044\u65b9\u306f\u3001\u6b21\u306e\u8a18\u4e8b\u3067\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u6d3b\u7528\u6280\u307e\u3067\u3092\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            <a href=\"https:\/\/www.sejuku.net\/blog\/52314\" 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\/2017\/08\/JS1-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010JavaScript\u5165\u9580\u3011\u8ab0\u3067\u3082\u5206\u304b\u308bPromise\u306e\u4f7f\u3044\u65b9\u3068\u30b5\u30f3\u30d7\u30eb\u4f8b\u307e\u3068\u3081\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n\n\n\n<h2 class=\"wp-block-heading\">\u30a8\u30e9\u30fc\u306e\u5bfe\u51e6\u306b\u3064\u3044\u3066<\/h2>\n\n\n\n<p>JavaScript\u306b\u9650\u3063\u305f\u8a71\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u3044\u3066\u3044\u308b\u3068\u6b63\u3057\u304f\u52d5\u4f5c\u3092\u305b\u305a\u306b\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3053\u3068\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3093\u306a\u6642\u306b\u3069\u306e\u3088\u3046\u306a\u5bfe\u51e6\u3092\u3057\u305f\u3089\u826f\u3044\u306e\u304b\u60a9\u3080\u3053\u3068\u3082\u3042\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001\u307e\u305a\u6700\u521d\u306b\u8003\u3048\u65b9\u3068\u3057\u3066\u30a8\u30e9\u30fc\u306e\u7a2e\u985e\u3092\u4ee5\u4e0b\u306e2\u3064\u306b\u5206\u3051\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"box01\">\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6587\u6cd5\u30a8\u30e9\u30fc<\/li>\n\n\n\n<li>\u8ad6\u7406\u30a8\u30e9\u30fc<\/li>\n<\/ol>\n\n\n<\/div>\n\n\n\n<p>\u6587\u6cd5\u30a8\u30e9\u30fc\u3068\u3044\u3046\u306e\u306f<b>\u5358\u7d14\u306a\u30bf\u30a4\u30d7\u30df\u30b9\u306b\u3088\u308b\u539f\u56e0<\/b>\u304c\u591a\u304f\u3066\u3001\u5927\u62b5\u306e\u5834\u5408\u306f\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u306e\u3067\u5bfe\u51e6\u306b\u60a9\u3080\u3053\u3068\u306f\u5c11\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u554f\u984c\u306b\u306a\u308b\u306e\u306f\u8ad6\u7406\u30a8\u30e9\u30fc\u3067\u3059\u3002\u3053\u308c\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u81ea\u4f53\u306f\u6b63\u3057\u304f\u52d5\u4f5c\u3059\u308b\u3082\u306e\u306e\u671f\u5f85\u3057\u305f\u51e6\u7406\u3092\u884c\u3063\u3066\u3044\u306a\u3044\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">let result = 0;\n      \nfor(let i=0; i&gt;10; i++) {\n        result += i;\n}\n      \nconsole.log(result);\n<\/pre>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\uff10\n<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u306f\u3001for\u6587\u3092\u4f7f\u3063\u30661\u304b\u30899\u307e\u3067\u306e\u6570\u5b57\u3092\u8db3\u3057\u7b97\u3059\u308b\u3068\u3044\u3046\u5358\u7d14\u306a\u51e6\u7406\u3067\u3059\u3002\u7d50\u679c\u306f45\u306b\u306a\u308b\u306f\u305a\u306a\u306e\u3067\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f0\u306b\u306a\u3063\u3066\u3044\u308b\u70b9\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u7406\u7531\u306f\u7c21\u5358\u3067for\u6587\u306e<b>\u6761\u4ef6\u5f0f\u304ci&gt;10\u3068\u306a\u3063\u3066\u3044\u308b<\/b>\u306e\u3067\u3001\u307e\u3063\u305f\u304f\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u304c\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u308f\u3051\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u7279\u306b\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u51fa\u308b\u3053\u3068\u3082\u306a\u304f\u30d7\u30ed\u30b0\u30e9\u30e0\u81ea\u4f53\u306f\u6b63\u3057\u304f\u52d5\u4f5c\u3057\u3066\u7d42\u4e86\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u8ad6\u7406\u30a8\u30e9\u30fc\u306f\u30d0\u30b0\u3092\u5f15\u304d\u8d77\u3053\u3057\u3084\u3059\u3044\u306e\u3067\u3001\u958b\u767a\u4e2d\u306fconsole.log\u3084\u30d6\u30e9\u30a6\u30b6\u306eDev Tools\u306a\u3069\u3092\u6d3b\u7528\u3057\u3066\u5909\u6570\u306a\u3069\u306e\u5024\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3088\u3046\u306b\u5fc3\u304c\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3061\u306a\u307f\u306b\u3001\u57fa\u672c\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u306e\u624b\u6cd5\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u307e\u3068\u3081\u3066\u3044\u308b\u306e\u3067\u5408\u308f\u305b\u3066\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n            <a href=\"https:\/\/www.sejuku.net\/blog\/68574\" 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\/2018\/08\/javascript-tutorial-top-150x86.png\">\n 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class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u4eca\u56de\u306f\u3001JavaScript\u306e\u5b66\u7fd2\u306b\u304a\u3044\u3066\u308f\u304b\u308a\u306b\u304f\u3044\u6982\u5ff5\u3084\u30dd\u30a4\u30f3\u30c8\u306a\u3069\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3092\u3057\u307e\u3057\u305f\uff01<\/p>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001\u3082\u3046\u4e00\u5ea6\u30dd\u30a4\u30f3\u30c8\u3092\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n<div class=\"box01\">\n\n\n\n<ul 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