{"id":28461,"date":"2017-08-02T10:40:15","date_gmt":"2017-08-02T01:40:15","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=28461"},"modified":"2024-05-06T11:44:13","modified_gmt":"2024-05-06T02:44:13","slug":"%e3%80%90javascript%e5%85%a5%e9%96%80%e3%80%91undefined%e3%82%92%e5%ae%8c%e5%85%a8%e3%81%ab%e7%90%86%e8%a7%a3%e3%81%99%e3%82%8b%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/28461","title":{"rendered":"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081"},"content":{"rendered":"<p>\u307f\u306a\u3055\u3093undefined\u3063\u3066\u805e\u3044\u305f\u3053\u3068\u3042\u308a\u307e\u3059\u304b\uff1f<\/p>\n<p>JavaScript\u306e\u5024\u306e1\u3064\u306a\u306e\u3067\u3059\u304c\u3001\u306a\u304b\u306a\u304b\u7406\u89e3\u3057\u3065\u3089\u304f\u3066\u3001\u521d\u5fc3\u8005\u304c\u982d\u3092\u60a9\u307e\u3059\u3053\u3068\u304c\u591a\u3044\u30c6\u30fc\u30de\u306e\u4e00\u3064\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p><div class=\"box_voice\">undefined\u3063\u3066\u306a\u3093\u3060\u308d\u3046\u2026<br \/>\n\u3069\u3093\u306a\u6642\u306b\u4f7f\u3046\u3093\u3060\u308d\u3046\u2026<\/div><\/p>\n<p>\u4eca\u56de\u306f\u305d\u3093\u306a\u7591\u554f\u533a\u304a\u7b54\u3048\u3059\u3079\u304f\u3001undefined\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3001\u3042\u306a\u305f\u306e\u982d\u306e\u4e2d\u306e\u30e2\u30e4\u30e2\u30e4\u3092\u30b9\u30c3\u30ad\u30ea\u3055\u305b\u307e\u3059\uff01<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u306f\u4e0b\u8a18\u306e\u6d41\u308c\u3067\u9032\u3081\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\n<div class=\"box01\"><\/p>\n<ul>\n<li><b>\u3010\u57fa\u790e\u3011undefined\u3068\u306f\uff1f<\/b><\/li>\n<li><b>\u3010\u57fa\u790e\u3011undefined\u3092\u4f7f\u3046\u5834\u9762<\/b><\/li>\n<li><b>\u3010\u767a\u5c55\u3011undefined\u306e\u5224\u5b9a\u65b9\u6cd5<\/b><\/li>\n<li><b>\u3010\u767a\u5c55\u3011undefined\u3068null\u306e\u9055\u3044<\/b><\/li>\n<li><b>\u3010\u767a\u5c55\u3011undefined\u304c\u4ee3\u5165\u30a8\u30e9\u30fc\u306b\u306a\u308b\u5834\u5408<\/b><\/li>\n<\/ul>\n<p><\/div><br \/>\nundefined\u306e\u6271\u3044\u65b9\u306b\u3064\u3044\u3066\u6b63\u3057\u304f\u7406\u89e3\u3057\u3001\u5fc5\u8981\u306a\u5834\u9762\u3067\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u3087\u3046\uff01<\/p>\n<p>\uff1e\uff1e\uff1e <a href=\"https:\/\/www.sejuku.net\/blog\/28461#undefined-6\">\u4eca\u3059\u3050\u300cundefined\u306e\u4f7f\u3044\u65b9\u300d\u3092\u77e5\u308a\u305f\u3044\u65b9\u306f\u3053\u3061\u3089<\/a><\/p>\n<h2>undefined\u3068\u306f\uff1f<\/h2>\n<p>undefined\u306f\u3001<b>\u672a\u5b9a\u7fa9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u5024<\/b>\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8aac\u660e\u3060\u3051\u3060\u3068\u3061\u3087\u3063\u3068\u308f\u304b\u308a\u306b\u304f\u3044\u3067\u3059\u306d\u3002\u5177\u4f53\u7684\u306a\u4f8b\u3067\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u5909\u6570\u3092\u5ba3\u8a00\u3057\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:js decode:true \">var sample;<\/pre>\n<p>\u3053\u306e\u5834\u5408\u3001\u300csample\u300d\u3068\u3044\u3046\u540d\u524d\u306e\u5909\u6570\u3092\u5ba3\u8a00\u3057\u305f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3053\u308c\u3067\u306f\u3001\u5ba3\u8a00\u3092\u3057\u305f\u3060\u3051\u3067\u5909\u6570\u306e\u4e2d\u8eab\u306f\u3042\u308a\u307e\u305b\u3093\u3088\u306d\uff1f<\/p>\n<p>\u3053\u306e\u3088\u3046\u306a\u72b6\u614b\u306f\u300c\u5909\u6570\u306b\u5024\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3068\u3044\u3046\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u8a00\u3044\u65b9\u3092\u5909\u3048\u308c\u3070\u672a\u5b9a\u7fa9\u3002\u305d\u3046\u3001\u3053\u306e\u72b6\u614b\u304cundefined\u3068\u3044\u3046\u5024\u306b\u306a\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<h2>undefined\u3092\u4f7f\u3046\u5834\u9762<\/h2>\n<p>\u3067\u306f\u3001\u3069\u306e\u3088\u3046\u306a\u6642\u306b\u3053\u306eundefined\u306f\u767b\u5834\u3059\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u3044\u304f\u3064\u304b\u306e\u30b1\u30fc\u30b9\u3092\u3053\u308c\u304b\u3089\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>\u5909\u6570\u306e\u521d\u671f\u5024\u3068\u3057\u3066\u5229\u7528\u3059\u308b<\/h3>\n<p>javascript\u3067\u3042\u308b\u5909\u6570\u3092\u5b9a\u7fa9\u3057\u305f\u3042\u3068\u3001\u305d\u306e\u5909\u6570\u306b\u4ee3\u5165\u304c\u4e00\u5ea6\u3082\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u6642\u306b\u306f\u3001\u305d\u306e\u5909\u6570\u306bundefined\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:js decode:true \">var item;\r\nvar category = \"bag\";\r\n\r\nconsole.log(\"item = \" + item);\r\nconsole.log(\"category = \" + category);<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">item = undefined\r\ncategory = bag<\/pre>\n<p>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306e\u6700\u521d\u306bitem\u3001category\u3068\u3044\u3046\u5909\u6570\u3092\u5ba3\u8a00\u3057\u3001category\u306f\u201dbag\u201d\u3068\u3044\u3046\u5024\u3092\u5165\u308c\u3066\u3044\u307e\u3059\u304c\u3001item\u306f\u4f55\u3082\u4ee3\u5165\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u306e\u72b6\u614b\u3067\u3001\u5909\u6570\u306e\u4e2d\u8eab\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u3066\u51fa\u529b\u3057\u3066\u307f\u308b\u3068\u3001item\u306fundefined\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b\u4e8b\u304c\u78ba\u8a8d\u3067\u304d\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u5909\u6570\u306e\u521d\u671f\u5024\u3068\u3057\u3066undefined\u304c\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u914d\u5217\u8981\u7d20\u306e\u521d\u671f\u5024\u3068\u3057\u3066\u5229\u7528\u3059\u308b<\/h3>\n<p>javascript\u306e\u914d\u5217\u306b\u3064\u3044\u3066\u3082\u5909\u6570\u3068\u540c\u69d8\u306b\u521d\u671f\u5316\u3057\u305f\u72b6\u614b\u3067\u5404\u8981\u7d20\u306b\u5024\u3092\u4ee3\u5165\u3057\u3066\u3044\u306a\u3051\u308c\u3070undefined\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u3061\u3089\u3082\u30b5\u30f3\u30d7\u30eb\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:js decode:true \">var array1 = new Array();\r\nvar array2 = [ , ];\r\n\r\nconsole.log( \"array1[ 0 ]\u306f\" + array1[ 0 ] );\r\nconsole.log( \"array2[ 0 ]\u306f\" + array2[ 0 ] );<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">array1[ 0 ]\u306fundefined\r\narray2[ 0 ]\u306fundefined<\/pre>\n<p>javascript\u306e\u914d\u5217\u306e\u521d\u671f\u5316\u306b\u3064\u3044\u3066\u66f4\u306b\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u65b9\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>&gt;&gt;<a href=\"https:\/\/www.sejuku.net\/blog\/23481\" target=\"_blank\" rel=\"noopener noreferrer\">\u3053\u308c\u3067\u3042\u306a\u305f\u3082\u914d\u5217\u30de\u30b9\u30bf\u30fc\uff01\uff1f\u914d\u5217\u3092\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5<\/a><\/p>\n<h3>\u95a2\u6570\u306e\u5f15\u6570\u306b\u5229\u7528\u3059\u308b<\/h3>\n<p>\u95a2\u6570\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u5f15\u6570\u306e\u6570\u306b\u6e80\u305f\u306a\u3044\u5f62\u3067\u305d\u306e\u95a2\u6570\u304c\u547c\u3070\u308c\u305f\u5834\u5408\u306b\u3082\u3001\u305d\u306e\u5f15\u6570\u306b\u306fundefined\u304c\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u3061\u3089\u3082\u307e\u305a\u306f\u30b5\u30f3\u30d7\u30eb\u304b\u3089\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"lang:js decode:true \">function output(pref, city) {\r\n  console.log(\"\u90fd\u9053\u5e9c\u770c=\" + pref + \",\u5e02\u533a\u753a\u6751=\" + city);\r\n}\r\n\r\noutput(\"\u5317\u6d77\u9053\");<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\u90fd\u9053\u5e9c\u770c=\u5317\u6d77\u9053,\u5e02\u533a\u753a\u6751=undefined<\/pre>\n<p>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306b\u3042\u308b\u901a\u308a\u3001output\u95a2\u6570\u306f\u5f15\u6570\u30922\u3064\uff08pref\u3001city)\u53d7\u3051\u53d6\u308b\u5f62\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001pref\u306b\u5f53\u305f\u308b\u5f15\u6570\u306e\u307f\u3092\u6307\u5b9a\u3057\u3066\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3068\u3001\u7b2c\u4e8c\u5f15\u6570(city)\u306b\u306fundefined\u304c\u30bb\u30c3\u30c8\u3055\u308c\u308b\u4e8b\u304c\u78ba\u8a8d\u3067\u304d\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u307e\u3067\u3054\u7d39\u4ecb\u3057\u305f\u3088\u3046\u306a\u30b1\u30fc\u30b9\u306a\u3069\u3067undefined\u304c\u767b\u5834\u3057\u307e\u3059\u306e\u3067\u3001\u521d\u5fc3\u8005\u306e\u65b9\u306f\u3088\u304f\u899a\u3048\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u958b\u767a\u306e\u5834\u3067undefined\u306b\u51fa\u4f1a\u3063\u305f\u969b\u306f\u3001\u305d\u306e\u524d\u306e\u51e6\u7406\u3067\u4e0a\u8a18\u306b\u8a72\u5f53\u3059\u308b\u30b1\u30fc\u30b9\u304c\u306a\u3044\u304b\u3069\u3046\u304b\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>undefined\u306e\u5224\u5b9a\u65b9\u6cd5<\/h2>\n<p>\u3053\u3053\u3067\u306f\u3001\u76ee\u7684\u306e\u5024\u304cundefined\u306a\u306e\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u5b66\u3093\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e3b\u306a\u5224\u5b9a\u65b9\u6cd5\u306f\u4e0b\u8a18\u306e3\u3064\u3067\u3059\u3002<br \/>\n<div class=\"box01\"><\/p>\n<ul>\n<li><b>undefined\u540c\u58eb\u3067\u6bd4\u8f03<\/b><\/li>\n<li><b>typeof\u306b\u3088\u308b\u6bd4\u8f03<\/b><\/li>\n<li><b>void\u306b\u3088\u308b\u6bd4\u8f03<\/b><\/li>\n<\/ul>\n<p><\/div><br \/>\n\u305d\u308c\u305e\u308c\u7d30\u304b\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n<h3>undefined\u540c\u58eb\u3067\u6bd4\u8f03\u3059\u308b<\/h3>\n<p>\u5024\u304cundefined\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u6700\u3082\u7c21\u5358\u306a\u65b9\u6cd5\u306f\u3001\u6761\u4ef6\u5f0f\u3067undefined\u81ea\u4f53\u3068\u6bd4\u8f03\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<p>\u6b21\u306e\u4f8b\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"lang:js decode:true \">var sample;\r\n\r\nif (sample === undefined) {\r\n\r\n    console.log('undefined\u3067\u3059');\r\n\r\n}\r\nelse {\r\n\r\n    console.log('undefined\u3067\u306f\u3042\u308a\u307e\u305b\u3093')\r\n\r\n}<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">undefined\u3067\u3059<\/pre>\n<p>\u3053\u3053\u3067IF\u6587\u306e\u6761\u4ef6\u5f0f\u306b\u6ce8\u76ee\u3057\u3066\u4e0b\u3055\u3044\uff01<\/p>\n<p>undefined\u306e\u6bd4\u8f03\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u6f14\u7b97\u5b50(===)\u306f\u300c===\uff08\u53b3\u5bc6\u7b49\u4fa1\u6f14\u7b97\u5b50\uff09\u300d\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u300c\u5024\u300d\u3068\u300c\u578b\u300d\u3092\u6bd4\u8f03\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u5024\u304cundefined\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u624b\u8efd\u306b\u5224\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n<h3>typeof\u6f14\u7b97\u5b50\u3067\u6bd4\u8f03\u3059\u308b<\/h3>\n<p>undefined\u3068\u76f4\u63a5\u6bd4\u8f03\u3059\u308b\u5834\u5408\u306f\u3001\u3059\u3053\u3057\u6ce8\u610f\u3059\u3079\u304d\u70b9\u304c\u3042\u308a\u307e\u3057\u305f\u306d\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u3053\u306etypeof\u6f14\u7b97\u5b50\u3067\u3042\u308c\u3070\u3001\u305d\u306e\u3088\u3046\u306a\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u3088\u304f\u5229\u7528\u3055\u308c\u308b\u624b\u6cd5\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n<p>undefined\u306e\u5024\u306btypeof\u6f14\u7b97\u5b50\u3092\u7528\u3044\u308b\u3068\u5fc5\u305a\u201dundefined\u201d\u304c\u8fd4\u308b\u3068\u3044\u3046\u6027\u8cea\u3092\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u4e0b\u8a18\u306e\u4f8b\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"lang:js decode:true \">var city;\r\n\r\nif (typeof city === \"undefined\") {\r\n  console.log(\"city\u306fundefined\u3067\u3059\u3002\");\r\n}<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">city\u306fundefined\u3067\u3059\u3002<\/pre>\n<h3>void\u6f14\u7b97\u5b50\u3067\u6bd4\u8f03\u3059\u308b<\/h3>\n<p>\u4e0a\u8a18\u3067\u3054\u7d39\u4ecb\u3057\u305f\u65b9\u6cd5\u306e\u307b\u304b\u306b\u3001void\u6f14\u7b97\u5b50\u3092\u5229\u7528\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002void\u6f14\u7b97\u5b50\u306f\u4e0e\u3048\u3089\u308c\u305f\u5f0f\u306b\u5bfe\u3057\u3066\u5e38\u306bundefined\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001void 0 \u3084 void \u201c\u6771\u4eac\u201d\u306a\u3069\u3001\u3069\u306e\u3088\u3046\u306a\u6570\u5024\u3084\u6587\u5b57\u5217\u3092\u4e0e\u3048\u3066\u3082\u7d50\u679c\u306fundefined\u304c\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u6027\u8cea\u3092\u5229\u7528\u3057\u305fundefined\u5224\u5b9a\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true \">var city;\r\n\r\nif (city === void 0) {\r\n  console.log(\"city\u306fundefined\u3067\u3059\u3002\");\r\n}<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">city\u306fundefined\u3067\u3059\u3002<\/pre>\n<p>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306b\u3042\u308b\u201dvoid 0\u201d\u304cundefined\u3092\u8fd4\u3059\u306e\u3067\u3001\u7d50\u679c\u7684\u306bcity\u5909\u6570\u3068undefined\u3092\u6bd4\u8f03\u3059\u308b\u51e6\u7406\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u5224\u5b9a\u306b\u4f7f\u3046\u53b3\u5bc6\u7b49\u4fa1\u6f14\u7b97\u5b50(===)\u306b\u3064\u3044\u3066<\/h2>\n<p>\u3053\u308c\u307e\u3067\u306e\u5224\u5b9a\u65b9\u6cd5\u306b\u304a\u3044\u3066\u3001IF\u6587\u306e\u6761\u4ef6\u5f0f\u306b\u300c===\u300d\u3092\u4f7f\u3063\u3066\u3044\u308b\u3053\u3068\u306b\u6c17\u3065\u3044\u305f\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u3053\u308c\u306f\u3001\u300c===\uff08\u53b3\u5bc6\u7b49\u4fa1\u6f14\u7b97\u5b50\uff09\u300d\u3068\u8a00\u3063\u3066\u300c\u578b\u300d\u3068\u300c\u5024\u300d\u306e\u4e21\u65b9\u304c\u540c\u3058\u3067\u3042\u308b\u304b\u3092\u5224\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002JavaScript\u306f\u300c==\uff08\u7b49\u4fa1\u6f14\u7b97\u5b50\uff09\u300d\u3082\u3042\u308b\u306e\u3067\u3059\u304c\u3001undefined\u3092\u5224\u5b9a\u3059\u308b\u3068\u304d\u306f\u53b3\u5bc6\u7b49\u4fa1\u6f14\u7b97\u5b50\u3067\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<pre class=\"lang:js decode:true\">console.log(null == undefined);\r\n\r\n\r\nconsole.log(null === undefined);\r\n<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"theme:dark-terminal lang:default decode:true\">true\r\n\r\nfalse\r\n<\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300cnull\u300d\u3068\u300cundefined\u300d\u3092\u305d\u308c\u305e\u308c\u6bd4\u8f03\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u304c\u3001\u5b9f\u884c\u7d50\u679c\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<p>\u5b9f\u306f\u3001\u300c==\u300d\u3067\u6bd4\u8f03\u3057\u305f\u5834\u5408\u306b\u306f\u300cnull \/ undefined\u300d\u3069\u3061\u3089\u3082\u540c\u3058\u3082\u306e\u3068\u3057\u3066\u6271\u308f\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001undefined\u3092\u691c\u51fa\u3059\u308b\u3064\u3082\u308a\u304cnull\u3082\u4e00\u7dd2\u306b\u691c\u51fa\u3057\u3066\u3057\u307e\u3046\u5371\u967a\u6027\u304c\u3042\u308b\u306e\u3067\u3001\u5fc5\u305a\u53b3\u5bc6\u7b49\u4fa1\u6f14\u7b97\u5b50\u3092\u5229\u7528\u3059\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n<h2>undefined\u3068null\u306e\u9055\u3044<\/h2>\n<p>\u300cundefined\u300d\u3068\u300cnull\u300d\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u3001\u305d\u3082\u305d\u3082\u3069\u306e\u3088\u3046\u306a\u7528\u9014\u3067\u5229\u7528\u3059\u3079\u304d\u306a\u306e\u304b\u3092\u88dc\u8db3\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e00\u4f53\u3053\u306e\uff12\u3064\u306e\u9055\u3044\u306f\u306a\u3093\u306a\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u5192\u982d\u3067\u3082\u89e3\u8aac\u3057\u307e\u3057\u305f\u304c\u3001undefined\u306f\u300c\u672a\u5b9a\u7fa9\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u3042\u308a\u300c\u5024\u300d\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044\u72b6\u614b\u306e\u3053\u3068\u3067\u3059\u3002\u305d\u308c\u306b\u5bfe\u3057\u3066null\u306f\u3001\u5024\u304c\u300c\u7a7a\u3063\u307d\u300d\u306e\u72b6\u614b\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<pre class=\"lang:js decode:true\">var sample;\r\nvar test = null;\r\n\r\nconsole.log( sample );\r\nconsole.log( test );\r\n<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"theme:dark-terminal lang:default decode:true\">undefined\r\nnull\r\n<\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5909\u6570\u300csample\u300d\u3068\u300ctest\u300d\u304c\u3042\u308a\u307e\u3059\u3002\u5909\u6570\u300csample\u300d\u306f\u5ba3\u8a00\u3092\u3057\u305f\u3060\u3051\u3067\u300c\u5024\u300d\u306f\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u5b9f\u884c\u7d50\u679c\u306b\u306f\u672a\u5b9a\u7fa9\u3092\u610f\u5473\u3059\u308b\u300cundefined\u300d\u304c\u51fa\u529b\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002\u5909\u6570\u300ctest\u300d\u306f\u5ba3\u8a00\u3092\u3057\u305f\u3046\u3048\u3067\u300c\u5024\u300d\u3068\u3057\u3066\u300cnull\u300d\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u306d\u3002\u305d\u306e\u305f\u3081\u3001\u5b9f\u884c\u7d50\u679c\u306b\u306f\u5024\u304c\u7a7a\u3063\u307d\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u300cnull\u300d\u304c\u51fa\u529b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001<b>\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u5909\u6570\u306e\u521d\u671f\u5024\u3068\u3057\u3066\u610f\u56f3\u7684\u306b\u5024\u304c\u7121\u3044\u72b6\u614b\u3092\u610f\u5473\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u3081\u3089\u308c\u308b\u306e\u304c\u300cnull\u300d\u306e\u5f79\u5272<\/b>\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3082\u3063\u3068\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001undefined\u3068null\u306e\u9055\u3044\u306f\u300c\u5024\u304c\u7a7a\u3067\u3042\u308b\u300d\u3053\u3068\u3092\u610f\u56f3\u7684\u306b\u8868\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306a\u306e\u3067\u3059\u3002<\/p>\n<h2>undefined\u3078\u306e\u4ee3\u5165\u306b\u3064\u3044\u3066<\/h2>\n<p>\u6700\u5f8c\u306b\u3001undefined\u306e\u91cd\u8981\u306a\u7279\u6027\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u304a\u304d\u307e\u3059\uff01<\/p>\n<p>undefined\u306fJavaScript\u306b\u304a\u3051\u308b\u4e88\u7d04\u8a9e\u3067\u306f\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u901a\u5e38\u306f\u5024\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306e\u4f8b\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<pre class=\"lang:js decode:true \">var undefined = 0;\r\n\r\nconsole.log( undefined );<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">undefined<\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001undefined\u3068\u307e\u3063\u305f\u304f\u540c\u3058\u5909\u6570\u540d\u3092\u4f5c\u6210\u3057\u300c0\u300d\u3092\u4ee3\u5165\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30b0\u306b\u51fa\u529b\u3059\u308b\u3068\u300c0\u300d\u3067\u306f\u306a\u304fundefined\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304c\u308f\u304b\u308a\u307e\u3059\u3088\u306d\uff1f\u3053\u308c\u306f\u3001undefined\u306b\u306f\u4ee3\u5165\uff08\u4e0a\u66f8\u304d\uff09\u3092\u8a31\u53ef\u3057\u306a\u3044\u3068\u3044\u3046JavaScript\u306e\u4ed5\u69d8\u306a\u306e\u3067\u3059\u3002<\/p>\n<p>\u3067\u306f\u3001\u95a2\u6570\u5185\u3067\u540c\u3058\u3053\u3068\u3092\u3059\u308b\u3068\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u4e0b\u8a18\u306e\u4f8b\u3067\u306f\u3001\u95a2\u6570\u300ctest()\u300d\u306e\u4e2d\u3067undefined\u3068\u540c\u3058\u5909\u6570\u540d\u3092\u4f5c\u6210\u3057\u3066\u300c0\u300d\u3092\u4ee3\u5165\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true \">function test() {\r\n    var undefined = 0;\r\n    \r\n    console.log( undefined );\r\n}\r\n\r\ntest();<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\uff10<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\u3092\u898b\u308b\u3068\u3001undefined\u306e\u5024\u306b\u300c0\u300d\u304c\u4ee3\u5165\uff08\u4e0a\u66f8\u304d\uff09\u3067\u304d\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n<p>\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306f\u3001<b>\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306e\u5834\u5408\u3060\u3051\u306f\u5024\u306e\u4ee3\u5165\uff08\u4e0a\u66f8\u304d\uff09\u304c\u3067\u304d\u306a\u3044<\/b>\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u95a2\u6570\u306a\u3069\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306b\u306a\u3089\u306a\u3044\u72b6\u6cc1\u3067\u306f\u306a\u308b\u3079\u304fundefined\u3068\u3044\u3046\u540d\u524d\u306e\u5909\u6570\u306f\u4f7f\u308f\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n<h2>undefined\u306e\u307e\u3068\u3081<\/h2>\n<p>\u6700\u5f8c\u306b\u3001undefined\u306e\u57fa\u672c\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001undefined\u304c\u5229\u7528\u3055\u308c\u308b\u30b1\u30fc\u30b9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n<p>undefined\u306f\u57fa\u672c\u7684\u306b\u3001\u5909\u6570\u306e\u521d\u671f\u5024\u3001\u914d\u5217\u306e\u521d\u671f\u5024\u3001\u95a2\u6570\u306e\u5f15\u6570\u3068\u3057\u3066\u306e\u521d\u671f\u5024\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true\">var item;\r\nvar array1 = new Array();\r\n\r\n\r\nfunction output(sample) {\r\n  console.log(sample);\r\n}\r\n\r\n\r\nconsole.log(item);\r\nconsole.log(array1[0]);\r\noutput();\r\n<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"theme:dark-terminal lang:default decode:true\">undefined\r\nundefined\r\nundefined\r\n<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\u304c\u3059\u3079\u3066undefined\u306b\u306a\u3063\u3066\u3044\u308b\u70b9\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\uff01\u3053\u308c\u306f\u3001\u5909\u6570\u3084\u914d\u5217\u306a\u3069\u304c\u5ba3\u8a00\u3055\u308c\u305f\u6642\u70b9\u3067JavaScript\u304c\u81ea\u52d5\u7684\u306bundefined\u3092\u5b9a\u7fa9\u3059\u308b\u304b\u3089\u306a\u306e\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u610f\u56f3\u7684\u306b\u300c\u5024\u300d\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u5909\u6570\u3084\u914d\u5217\u306e\u5024\u304c\u6c7a\u307e\u3063\u3066\u3044\u304f\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n<p>undefined\u3092\u5224\u5b9a\uff08\u691c\u51fa\uff09\u3059\u308b\u306b\u306f\u3001\u5fc5\u305a\u300c===\uff08\u53b3\u5bc6\u7b49\u4fa1\u6f14\u7b97\u5b50\uff09\u300d\u3092\u4f7f\u3063\u3066\u6bd4\u8f03\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true\">var sample;\r\n\r\nconsole.log(sample === undefined);\r\n<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"theme:dark-terminal lang:default decode:true\">true\r\n<\/pre>\n<p>\u300c==\uff08\u7b49\u4fa1\u6f14\u7b97\u5b50\uff09\u300d\u3060\u3068null\u3082\u540c\u3058\u5024\u3068\u3057\u3066\u5224\u5b9a\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u307e\u305f\u3001typeof\u6f14\u7b97\u5b50\u3092\u5229\u7528\u3057\u305f\u5224\u5b9a\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<pre class=\"lang:js decode:true\">var city;\r\n\r\nconsole.log(typeof city === \"undefined\");\r\n<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c<\/p>\n<pre class=\"theme:dark-terminal lang:default decode:true\">true\r\n<\/pre>\n<p>typeof\u306f\u5909\u6570\u306a\u3069\u306e\u300c\u578b\u300d\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3001\u5024\u304c\u672a\u5b9a\u7fa9\u306e\u5834\u5408\u306f\u300cundefined\u578b\u300d\u3092\u53d6\u5f97\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u6761\u4ef6\u5f0f\u306b\u5fdc\u7528\u3059\u308c\u3070\u540c\u3058\u3088\u3046\u306bundefined\u3092\u5224\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306d\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u4eca\u56de\u306f\u3001JavaScript\u306b\u304a\u3051\u308b\u300c\u672a\u5b9a\u7fa9\u300d\u3092\u610f\u5473\u3059\u308bundefined\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3092\u3057\u307e\u3057\u305f\u3002<\/p>\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<div class=\"box01\">\n<ul>\n<li><b>undefined\u306f\u3001\u5909\u6570\u30fb\u914d\u5217\u30fb\u95a2\u6570\u306a\u3069\u306e\u521d\u671f\u5024\u3084\u5f15\u6570\u306a\u3069\u306b\u4f7f\u308f\u308c\u308b<\/b><\/li>\n<li><b>undefined\u3092\u5224\u5b9a\u3059\u308b\u969b\u306btypeof\u3084void\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/b><\/li>\n<li><b>undefined\u3068null\u306e\u9055\u3044\u306f\u3001\u5024\u306e\u4e2d\u8eab\u304c\u7a7a\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u56f3\u7684\u306b\u660e\u793a\u3059\u308b\u304b\u3069\u3046\u304b<\/b><\/li>\n<li><b>undefined\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306e\u6642\u3060\u3051\u518d\u4ee3\u5165\uff08\u4e0a\u66f8\u304d\uff09\u304c\u3067\u304d\u306a\u3044<\/b><\/li>\n<\/ul>\n<p><\/div><br \/>\n\u4e0a\u8a18\u5185\u5bb9\u3092\u8e0f\u307e\u3048\u3066\u3001\u305c\u3072\u6d3b\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u306d\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u307f\u306a\u3055\u3093undefined\u3063\u3066\u805e\u3044\u305f\u3053\u3068\u3042\u308a\u307e\u3059\u304b\uff1f JavaScript\u306e\u5024\u306e1\u3064\u306a\u306e\u3067\u3059\u304c\u3001\u306a\u304b\u306a\u304b\u7406\u89e3\u3057\u3065\u3089\u304f\u3066\u3001\u521d\u5fc3\u8005\u304c\u982d\u3092\u60a9\u307e\u3059\u3053\u3068\u304c\u591a\u3044\u30c6\u30fc\u30de\u306e\u4e00\u3064\u3060\u3068\u601d\u3044\u307e\u3059\u3002 undefined\u3063\u3066\u306a\u3093\u3060\u308d\u3046\u2026 \u3069\u3093\u306a\u6642 [&hellip;]<\/p>\n","protected":false},"author":16433,"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":"","footnotes":""},"categories":[2346],"tags":[95,576],"class_list":["post-28461","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript-study","tag-javascript","tag-undefined"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 | \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\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 \u300d\u306b\u3064\u3044\u3066\u3001\u8ab0\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001\u3042\u306a\u305f\u306e\u60a9\u307f\u304c\u89e3\u6c7a\u3059\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3001\u65b0\u305f\u306a\u6c17\u4ed8\u304d\u3082\u767a\u898b\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u304a\u60a9\u307f\u306e\u65b9\u306f\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sejuku.net\/blog\/28461\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0\" \/>\n<meta property=\"og:description\" content=\"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 \u300d\u306b\u3064\u3044\u3066\u3001\u8ab0\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001\u3042\u306a\u305f\u306e\u60a9\u307f\u304c\u89e3\u6c7a\u3059\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3001\u65b0\u305f\u306a\u6c17\u4ed8\u304d\u3082\u767a\u898b\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u304a\u60a9\u307f\u306e\u65b9\u306f\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sejuku.net\/blog\/28461\" \/>\n<meta property=\"og:site_name\" content=\"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/sejuku2013\" \/>\n<meta property=\"article:published_time\" content=\"2017-08-02T01:40:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-06T02:44:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/08\/javascript-tutorial-top.png\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@samuraijuku\" \/>\n<meta name=\"twitter:site\" content=\"@samuraijuku\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461\"},\"author\":{\"name\":\"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#\\\/schema\\\/person\\\/d20c57b59dba15001519a8a671183095\"},\"headline\":\"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081\",\"datePublished\":\"2017-08-02T01:40:15+00:00\",\"dateModified\":\"2024-05-06T02:44:13+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461\"},\"wordCount\":166,\"publisher\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/javascript-tutorial-top.png\",\"keywords\":[\"JavaScript\",\"undefined\"],\"articleSection\":[\"Javascript\u5b66\u7fd2\"],\"inLanguage\":\"ja\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461\",\"url\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461\",\"name\":\"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/javascript-tutorial-top.png\",\"datePublished\":\"2017-08-02T01:40:15+00:00\",\"dateModified\":\"2024-05-06T02:44:13+00:00\",\"description\":\"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 \u300d\u306b\u3064\u3044\u3066\u3001\u8ab0\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001\u3042\u306a\u305f\u306e\u60a9\u307f\u304c\u89e3\u6c7a\u3059\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3001\u65b0\u305f\u306a\u6c17\u4ed8\u304d\u3082\u767a\u898b\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u304a\u60a9\u307f\u306e\u65b9\u306f\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461#primaryimage\",\"url\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/javascript-tutorial-top.png\",\"contentUrl\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/javascript-tutorial-top.png\",\"width\":700,\"height\":400},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/28461#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/\",\"name\":\"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0\",\"description\":\"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u306e\u3059\u3079\u3066\u304c\u30b3\u30b3\u306b\u3002\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ja\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#organization\",\"name\":\"\u682a\u5f0f\u4f1a\u793eSAMURAI\",\"url\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/logo.png\",\"contentUrl\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/logo.png\",\"width\":600,\"height\":600,\"caption\":\"\u682a\u5f0f\u4f1a\u793eSAMURAI\"},\"image\":{\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/sejuku2013\",\"https:\\\/\\\/x.com\\\/samuraijuku\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCCFOQO5aDK0xXam4cUQXT8g\\\/featured\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/#\\\/schema\\\/person\\\/d20c57b59dba15001519a8a671183095\",\"name\":\"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d91ed20aaa7f873a0f4f35586561303460c1e3864746dddb6ebe0fb093c1952d?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d91ed20aaa7f873a0f4f35586561303460c1e3864746dddb6ebe0fb093c1952d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d91ed20aaa7f873a0f4f35586561303460c1e3864746dddb6ebe0fb093c1952d?s=96&d=mm&r=g\",\"caption\":\"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8\"},\"description\":\"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u587e\u306f\u300c\u4eba\u751f\u3092\u5909\u3048\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u300d\u3092\u30b3\u30f3\u30bb\u30f3\u30d7\u30c8\u306b\u3001\u904e\u53bb\u591a\u304f\u306e\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u8f29\u51fa\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3067\u3059\u3002\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8\u3067\u306f\u6280\u8853\u7cfb\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u4e2d\u5fc3\u306b\u6709\u7528\u306a\u60c5\u5831\u3092\u767a\u4fe1\u3057\u3066\u3044\u304d\u307e\u3059\u3002\",\"url\":\"https:\\\/\\\/www.sejuku.net\\\/blog\\\/author\\\/samurai-tech\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0","description":"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 \u300d\u306b\u3064\u3044\u3066\u3001\u8ab0\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001\u3042\u306a\u305f\u306e\u60a9\u307f\u304c\u89e3\u6c7a\u3059\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3001\u65b0\u305f\u306a\u6c17\u4ed8\u304d\u3082\u767a\u898b\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u304a\u60a9\u307f\u306e\u65b9\u306f\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.sejuku.net\/blog\/28461","og_locale":"ja_JP","og_type":"article","og_title":"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0","og_description":"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 \u300d\u306b\u3064\u3044\u3066\u3001\u8ab0\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001\u3042\u306a\u305f\u306e\u60a9\u307f\u304c\u89e3\u6c7a\u3059\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3001\u65b0\u305f\u306a\u6c17\u4ed8\u304d\u3082\u767a\u898b\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u304a\u60a9\u307f\u306e\u65b9\u306f\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002","og_url":"https:\/\/www.sejuku.net\/blog\/28461","og_site_name":"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0","article_publisher":"https:\/\/www.facebook.com\/sejuku2013","article_published_time":"2017-08-02T01:40:15+00:00","article_modified_time":"2024-05-06T02:44:13+00:00","og_image":[{"width":700,"height":400,"url":"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/08\/javascript-tutorial-top.png","type":"image\/png"}],"author":"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8","twitter_card":"summary_large_image","twitter_creator":"@samuraijuku","twitter_site":"@samuraijuku","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.sejuku.net\/blog\/28461#article","isPartOf":{"@id":"https:\/\/www.sejuku.net\/blog\/28461"},"author":{"name":"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8","@id":"https:\/\/www.sejuku.net\/blog\/#\/schema\/person\/d20c57b59dba15001519a8a671183095"},"headline":"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081","datePublished":"2017-08-02T01:40:15+00:00","dateModified":"2024-05-06T02:44:13+00:00","mainEntityOfPage":{"@id":"https:\/\/www.sejuku.net\/blog\/28461"},"wordCount":166,"publisher":{"@id":"https:\/\/www.sejuku.net\/blog\/#organization"},"image":{"@id":"https:\/\/www.sejuku.net\/blog\/28461#primaryimage"},"thumbnailUrl":"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/08\/javascript-tutorial-top.png","keywords":["JavaScript","undefined"],"articleSection":["Javascript\u5b66\u7fd2"],"inLanguage":"ja"},{"@type":"WebPage","@id":"https:\/\/www.sejuku.net\/blog\/28461","url":"https:\/\/www.sejuku.net\/blog\/28461","name":"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0","isPartOf":{"@id":"https:\/\/www.sejuku.net\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.sejuku.net\/blog\/28461#primaryimage"},"image":{"@id":"https:\/\/www.sejuku.net\/blog\/28461#primaryimage"},"thumbnailUrl":"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/08\/javascript-tutorial-top.png","datePublished":"2017-08-02T01:40:15+00:00","dateModified":"2024-05-06T02:44:13+00:00","description":"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081 \u300d\u306b\u3064\u3044\u3066\u3001\u8ab0\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001\u3042\u306a\u305f\u306e\u60a9\u307f\u304c\u89e3\u6c7a\u3059\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3001\u65b0\u305f\u306a\u6c17\u4ed8\u304d\u3082\u767a\u898b\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u304a\u60a9\u307f\u306e\u65b9\u306f\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002","breadcrumb":{"@id":"https:\/\/www.sejuku.net\/blog\/28461#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.sejuku.net\/blog\/28461"]}]},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.sejuku.net\/blog\/28461#primaryimage","url":"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/08\/javascript-tutorial-top.png","contentUrl":"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/08\/javascript-tutorial-top.png","width":700,"height":400},{"@type":"BreadcrumbList","@id":"https:\/\/www.sejuku.net\/blog\/28461#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.sejuku.net\/blog\/"},{"@type":"ListItem","position":2,"name":"\u3010JavaScript\u5165\u9580\u3011undefined\u5fb9\u5e95\u89e3\u8aac\uff01\u4f7f\u3044\u65b9\u3084\u5224\u5b9a\u65b9\u6cd5\u307e\u3068\u3081"}]},{"@type":"WebSite","@id":"https:\/\/www.sejuku.net\/blog\/#website","url":"https:\/\/www.sejuku.net\/blog\/","name":"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0","description":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u306e\u3059\u3079\u3066\u304c\u30b3\u30b3\u306b\u3002","publisher":{"@id":"https:\/\/www.sejuku.net\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.sejuku.net\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ja"},{"@type":"Organization","@id":"https:\/\/www.sejuku.net\/blog\/#organization","name":"\u682a\u5f0f\u4f1a\u793eSAMURAI","url":"https:\/\/www.sejuku.net\/blog\/","logo":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.sejuku.net\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2023\/07\/logo.png","contentUrl":"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2023\/07\/logo.png","width":600,"height":600,"caption":"\u682a\u5f0f\u4f1a\u793eSAMURAI"},"image":{"@id":"https:\/\/www.sejuku.net\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/sejuku2013","https:\/\/x.com\/samuraijuku","https:\/\/www.youtube.com\/channel\/UCCFOQO5aDK0xXam4cUQXT8g\/featured"]},{"@type":"Person","@id":"https:\/\/www.sejuku.net\/blog\/#\/schema\/person\/d20c57b59dba15001519a8a671183095","name":"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/secure.gravatar.com\/avatar\/d91ed20aaa7f873a0f4f35586561303460c1e3864746dddb6ebe0fb093c1952d?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/d91ed20aaa7f873a0f4f35586561303460c1e3864746dddb6ebe0fb093c1952d?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d91ed20aaa7f873a0f4f35586561303460c1e3864746dddb6ebe0fb093c1952d?s=96&d=mm&r=g","caption":"\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8"},"description":"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u587e\u306f\u300c\u4eba\u751f\u3092\u5909\u3048\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u300d\u3092\u30b3\u30f3\u30bb\u30f3\u30d7\u30c8\u306b\u3001\u904e\u53bb\u591a\u304f\u306e\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u8f29\u51fa\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3067\u3059\u3002\u4f8d\u30c6\u30c3\u30af\u7de8\u96c6\u90e8\u3067\u306f\u6280\u8853\u7cfb\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u4e2d\u5fc3\u306b\u6709\u7528\u306a\u60c5\u5831\u3092\u767a\u4fe1\u3057\u3066\u3044\u304d\u307e\u3059\u3002","url":"https:\/\/www.sejuku.net\/blog\/author\/samurai-tech"}]}},"_links":{"self":[{"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/posts\/28461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/users\/16433"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/comments?post=28461"}],"version-history":[{"count":0,"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/posts\/28461\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/media\/69184"}],"wp:attachment":[{"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/media?parent=28461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/categories?post=28461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sejuku.net\/blog\/wp-json\/wp\/v2\/tags?post=28461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}