{"id":7566,"date":"2022-12-06T23:45:25","date_gmt":"2022-12-06T14:45:25","guid":{"rendered":"https:\/\/kininariantenna.com\/?p=7566"},"modified":"2022-12-06T23:45:25","modified_gmt":"2022-12-06T14:45:25","slug":"javascript%e3%81%aelet%e3%80%81const%e3%81%ae%e5%a4%89%e6%95%b0%e5%ae%a3%e8%a8%80%e3%81%be%e3%81%a8%e3%82%81%ef%bc%81var%e3%81%ae%e9%81%95%e3%81%84%e3%82%82%ef%bc%81","status":"publish","type":"post","link":"http:\/\/kininariantenna.com\/?p=7566","title":{"rendered":"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01"},"content":{"rendered":"<p>\u3051\u3069\u3001\u305d\u3093\u306a\u4e2d\u3067\u60a9\u3080\u3053\u3068\u306f\u3001<\/p>\n<div class=\"kininarukoto1\">\u30fbJavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5\u304c\u308f\u304b\u3089\u306a\u3044<br \/>\n\u30fbJavaScript\u306elet\u3001const\u3001var\u306e\u4f7f\u3044\u5206\u3051\u304c\u308f\u304b\u3089\u306a\u3089\u3044<\/div>\n<p>\u3067\u3059\u3088\u306d\u3002<\/p>\n<p>\u4eca\u56de\u306f\u305d\u3093\u306a\u304a\u60a9\u307f\u3092\u89e3\u6c7a\u3059\u308b<\/p>\n<div class=\"rdinfo\">\u30fbJavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5<br \/>\n\u30fbJavaScript\u306elet\u3001const\u3068var\u306e\u9055\u3044<\/div>\n<p>\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u307e\u3059\uff01<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_46 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">\u3082\u304f\u3058<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/kininariantenna.com\/?p=7566\/#JavaScript%E3%81%A7%E5%A4%89%E6%95%B0%E3%82%92%E5%AE%A3%E8%A8%80%E3%81%99%E3%82%8B%E6%96%B9%E6%B3%95\" title=\"JavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5\">JavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/kininariantenna.com\/?p=7566\/#var%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\" title=\"var\u306b\u3064\u3044\u3066\">var\u306b\u3064\u3044\u3066<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/kininariantenna.com\/?p=7566\/#let%E3%80%81const%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\" title=\"let\u3001const\u306b\u3064\u3044\u3066\">let\u3001const\u306b\u3064\u3044\u3066<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/kininariantenna.com\/?p=7566\/#let%E3%80%81const%E3%81%A8var%E3%81%AE%E9%81%95%E3%81%84%E3%81%AF%EF%BC%9F\" title=\"let\u3001const\u3068var\u306e\u9055\u3044\u306f\uff1f\">let\u3001const\u3068var\u306e\u9055\u3044\u306f\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/kininariantenna.com\/?p=7566\/#let%E3%80%81const%E3%81%AF%E5%86%8D%E5%AE%A3%E8%A8%80%E3%81%A7%E3%81%8D%E3%81%AA%E3%81%84\" title=\"let\u3001const\u306f\u518d\u5ba3\u8a00\u3067\u304d\u306a\u3044\">let\u3001const\u306f\u518d\u5ba3\u8a00\u3067\u304d\u306a\u3044<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/kininariantenna.com\/?p=7566\/#%E5%9F%BA%E6%9C%AC%E7%9A%84%E3%81%ABconst%E3%81%AF%E5%A4%89%E6%95%B0%E3%81%AE%E5%86%8D%E4%BB%A3%E5%85%A5%E3%81%AF%E4%B8%8D%E5%8F%AF\" title=\"\u57fa\u672c\u7684\u306bconst\u306f\u5909\u6570\u306e\u518d\u4ee3\u5165\u306f\u4e0d\u53ef\">\u57fa\u672c\u7684\u306bconst\u306f\u5909\u6570\u306e\u518d\u4ee3\u5165\u306f\u4e0d\u53ef<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/kininariantenna.com\/?p=7566\/#%E3%81%95%E3%81%84%E3%81%94%E3%81%AB\" title=\"\u3055\u3044\u3054\u306b\">\u3055\u3044\u3054\u306b<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"JavaScript%E3%81%A7%E5%A4%89%E6%95%B0%E3%82%92%E5%AE%A3%E8%A8%80%E3%81%99%E3%82%8B%E6%96%B9%E6%B3%95\"><\/span>JavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><P>JavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/P><\/p>\n<h3><span class=\"ez-toc-section\" id=\"var%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\"><\/span>var\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><P>var\u306f\u95a2\u6570\u30b9\u30b3\u30fc\u30d7\u307e\u305f\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u306e\u5909\u6570\u5ba3\u8a00\u3092\u304a\u3053\u306a\u3044\u307e\u3059\u3002\u540c\u6642\u306b\u5024\u3092\u521d\u671f\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/P><\/p>\n<h3><span class=\"ez-toc-section\" id=\"let%E3%80%81const%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\"><\/span>let\u3001const\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><P>JavaScript\u306e\u6a19\u6e96\u898f\u683c\u3067\u3042\u308bECMAScript2015\u3067\u8ffd\u52a0\u3055\u308c\u305f\u5ba3\u8a00\u5f62\u5f0f\u3068\u306a\u308a\u307e\u3059\u3002<\/P><br \/>\n<P>\u3053\u308c\u307e\u3067\u4f7f\u7528\u3055\u308c\u3066\u304d\u305fvar\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u306e\u5909\u6570\u5ba3\u8a00\u3067\u3057\u305f\u304c\u3001let\u3001const\u306f\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7\u3067\u306e\u5909\u6570\u5ba3\u8a00\u304c\u3067\u304d\u308b\u3053\u3068\u304c\u7279\u5fb4\u306b\u306a\u308a\u307e\u3059\u3002<\/P><br \/>\n<P>\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7\u3068\u306f\u51e6\u7406\u306e\uff5b\uff5d\u3067\u304f\u304f\u308b\u90e8\u5206\u3067\u3001\u4f8b\u3048\u3070IF\u6587\u3067\u3057\u305f\u3089if(){\uff1c\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7\u306f\u3053\u3053\uff1e}\u3068\u306a\u308a\u307e\u3059\u3002<\/P><\/p>\n<h3><span class=\"ez-toc-section\" id=\"let%E3%80%81const%E3%81%A8var%E3%81%AE%E9%81%95%E3%81%84%E3%81%AF%EF%BC%9F\"><\/span>let\u3001const\u3068var\u306e\u9055\u3044\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><P>let\u3001const\u3068var\u306e\u9055\u3044\u306flet\u3001const\u306f\uff5b\uff5d\u5185\u9650\u5b9a\u3067\u5229\u7528\u3067\u304d\u308b\u3053\u3068\u306b\u5bfe\u3057\u3066\u3001var\u306f\u3069\u3053\u3067\u3082\u6709\u52b9\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/P><br \/>\n<P>\u4f8b\u3048\u3070var\u306e\u5834\u5408\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/P><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-javascript line-numbers\">var value=1;\r\nconsole.log(value);\r\n\r\nif(true){\r\n  var value=2;\r\n}\r\nconsole.log(value);<\/code><\/pre>\n<p><P>\u7d50\u679c\u3067\u3059\u3002<\/P><\/p>\n<div class=\"info\"><code>1<br \/>\n2<\/code><\/div>\n<p><P>\u6b21\u306flet\u306b\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/P><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-javascript line-numbers\">let value=1;\r\nconsole.log(value);\r\n\r\nif(true){\r\n  let value=2;\r\n}\r\nconsole.log(value);<\/code><\/pre>\n<p><P>\u7d50\u679c\u3067\u3059\u3002<\/P><\/p>\n<div class=\"info\"><code>1<br \/>\n1<\/code><\/div>\n<p><!--\u5439\u304d\u51fa\u3057\u306f\u3058\u307e\u308a--><\/p>\n<div class=\"fukidashi1\">\n<div class=\"icon\">\n<div class=\"wphg\"><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2021\/07\/taka_kao3.gif\" alt=\"\u30bf\u30ab\u30d2\u30ed\"  width=\"110\" height=\"110\" \/><\/div>\n<div class=\"iconfont\">\u30bf\u30ab\u30d2\u30ed<\/div>\n<\/div>\n<div class=\"bubble\">\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7\u5185\u306e\u307f\u6709\u52b9\u306a\u5909\u6570\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u306d\u3002<br \/>\nFor\u6587\u306a\u3069\u3067\u4f7f\u3048\u3070\u4ed6\u3067\u306e\u5e72\u6e09\u304c\u9632\u3052\u308b\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/div>\n<\/div>\n<p><!--\u5439\u304d\u51fa\u3057\u7d42\u308f\u308a--><\/p>\n<h3><span class=\"ez-toc-section\" id=\"let%E3%80%81const%E3%81%AF%E5%86%8D%E5%AE%A3%E8%A8%80%E3%81%A7%E3%81%8D%E3%81%AA%E3%81%84\"><\/span>let\u3001const\u306f\u518d\u5ba3\u8a00\u3067\u304d\u306a\u3044<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><P>let\u3001const\u306f\u518d\u5ba3\u8a00\u3067\u304d\u306a\u3044\u3053\u3068\u306b\u5bfe\u3057\u3066\u3001var\u306f\u518d\u5ba3\u8a00\u53ef\u80fd\u3068\u3044\u3046\u9055\u3044\u3082\u3042\u308a\u307e\u3059\u3002<\/P><br \/>\n<P>var\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u518d\u5ba3\u8a00\u3057\u3066\u3082\u30a8\u30e9\u30fc\u3068\u306f\u306a\u308a\u307e\u305b\u3093\u304c\u3001<\/P><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-javascript line-numbers\">var value=1;\r\nconsole.log(value);\r\nvar value=2;\r\nconsole.log(value);<\/code><\/pre>\n<p><P>let\u3001const\u306f\u518d\u5ba3\u8a00\u3059\u308b\u3068\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002<\/P><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-javascript line-numbers\">let value=1;\r\nconsole.log(value);\r\nlet value=2;\r\nconsole.log(value);<\/code><\/pre>\n<p><P>\u7d50\u679c\u3067\u3059\u3002<\/P><\/p>\n<div class=\"info\"><code>Uncaught SyntaxError: Identifier 'value' has already been declared<\/code><\/div>\n<h3><span class=\"ez-toc-section\" id=\"%E5%9F%BA%E6%9C%AC%E7%9A%84%E3%81%ABconst%E3%81%AF%E5%A4%89%E6%95%B0%E3%81%AE%E5%86%8D%E4%BB%A3%E5%85%A5%E3%81%AF%E4%B8%8D%E5%8F%AF\"><\/span>\u57fa\u672c\u7684\u306bconst\u306f\u5909\u6570\u306e\u518d\u4ee3\u5165\u306f\u4e0d\u53ef<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><P>\u57fa\u672c\u7684\u306bconst\u306f\u5909\u6570\u306e\u518d\u4ee3\u5165\u306f\u4e0d\u53ef\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/P><br \/>\n<P>const\u306f\u5b9a\u6570\u3068\u547c\u3070\u308c\u3001\u5909\u6570\u306e\u518d\u4ee3\u5165\u306f\u884c\u308f\u308c\u306a\u3044\u524d\u63d0\u3068\u306a\u308a\u307e\u3059\u3002<\/P><br \/>\n<!--\u5439\u304d\u51fa\u3057\u306f\u3058\u307e\u308a--><\/p>\n<div class=\"fukidashi1\">\n<div class=\"icon\">\n<div class=\"wphg\"><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2021\/07\/taka_kao3.gif\" alt=\"\u30bf\u30ab\u30d2\u30ed\"  width=\"110\" height=\"110\" \/><\/div>\n<div class=\"iconfont\">\u30bf\u30ab\u30d2\u30ed<\/div>\n<\/div>\n<div class=\"bubble\">\u4f8b\u3048\u3070\u6d88\u8cbb\u7a0e\u306e\u7a0e\u7387\u306a\u3069\u5909\u66f4\u3055\u305b\u305f\u304f\u306a\u3044\u5909\u6570\u3092const\u3067\u5ba3\u8a00\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n<p><!--\u5439\u304d\u51fa\u3057\u7d42\u308f\u308a--><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-javascript line-numbers\">const value=1;\r\nconsole.log(value);\r\nvalue=2;\r\nconsole.log(value);<\/code><\/pre>\n<p><P>\u7d50\u679c\u3067\u3059\u3002<\/P><\/p>\n<div class=\"info\"><code> Uncaught TypeError: Assignment to constant variable.<\/code><\/div>\n<p><P>\u305f\u3060\u3001\u30d6\u30ed\u30c3\u30af\u30b9\u30b3\u30fc\u30d7\u306e\u4ed5\u69d8\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\uff5b\uff5d\u3067\u304f\u304f\u308c\u3070\u30c0\u30d6\u30eb\u5ba3\u8a00\u304c\u53ef\u80fd\u3067\u3059\u3002<\/P><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-javascript line-numbers\">const value=1;\r\nconsole.log(value);\r\nif(true){\r\n\tconst value=2;\r\n  console.log(value);\r\n}<\/code><\/pre>\n<p><P>\u7d50\u679c\u3067\u3059\u3002<\/P><\/p>\n<div class=\"info\"><code>1<br \/>\n2<\/code><\/div>\n<p><P>\u3082\u3046\u3072\u3068\u3064\u3001const\u3067\u914d\u5217\u3084\u9023\u60f3\u914d\u5217\u3092\u64cd\u4f5c\u3059\u308b\u5834\u5408\u3082\u30a8\u30e9\u30fc\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/P><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-javascript line-numbers\">const value=[1, 2];\r\nconsole.log(value);\r\nvalue.push(3);\r\nconsole.log(value);<\/code><\/pre>\n<p><P>\u7d50\u679c\u3067\u3059\u3002<\/P><\/p>\n<div class=\"info\"><code>[1, 2]\u3000<br \/>\n[1, 2, 3]<\/code><\/div>\n<p><!--\u5439\u304d\u51fa\u3057\u306f\u3058\u307e\u308a--><\/p>\n<div class=\"fukidashi1\">\n<div class=\"icon\">\n<div class=\"wphg\"><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2021\/07\/taka_kao3.gif\" alt=\"\u30bf\u30ab\u30d2\u30ed\"  width=\"110\" height=\"110\" \/><\/div>\n<div class=\"iconfont\">\u30bf\u30ab\u30d2\u30ed<\/div>\n<\/div>\n<div class=\"bubble\">const\u306e\u539f\u5247\u3068\u3057\u3066\u518d\u4ee3\u5165\u306f\u3067\u304d\u306a\u3044\u3068\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3067\u304d\u306a\u304f\u306f\u306a\u3044\u3068\u3044\u3046\u3068\u3053\u308d\u3067\u3057\u3087\u3046\u304b\u3002\u3061\u3087\u3063\u3068\u3084\u3084\u3063\u3053\u3057\u3044\u3067\u3059\u306d\u2026<\/div>\n<\/div>\n<p><!--\u5439\u304d\u51fa\u3057\u7d42\u308f\u308a--><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%81%95%E3%81%84%E3%81%94%E3%81%AB\"><\/span>\u3055\u3044\u3054\u306b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u3044\u304b\u304c\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001<\/p>\n<div class=\"endinfo\">\u30fbJavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5<br \/>\n\u30fbJavaScript\u306elet\u3001const\u3068var\u306e\u9055\u3044<\/div>\n<p>\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n<p>\u307e\u305f\u3001\u4ed6\u306b\u3082\u4fbf\u5229\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3088\u308d\u3057\u3051\u308c\u3070\u3054\u53c2\u7167\u9802\u3051\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3051\u3069\u3001\u305d\u3093\u306a\u4e2d\u3067\u60a9\u3080\u3053\u3068\u306f\u3001 \u30fbJavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5\u304c\u308f\u304b\u3089\u306a\u3044 \u30fbJavaScript\u306elet\u3001const\u3001var\u306e\u4f7f\u3044\u5206\u3051\u304c\u308f\u304b\u3089\u306a\u3089\u3044 \u3067\u3059\u3088\u306d\u3002 \u4eca\u56de\u306f\u305d\u3093\u306a\u304a\u60a9\u307f\u3092\u89e3\u6c7a\u3059\u308b \u30fbJavaScr&#8230;<\/p>\n","protected":false},"author":1,"featured_media":7389,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[168],"tags":[181],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.4.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01 - \u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kininariantenna.com\/?p=7566\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01 - \u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca\" \/>\n<meta property=\"og:description\" content=\"\u3051\u3069\u3001\u305d\u3093\u306a\u4e2d\u3067\u60a9\u3080\u3053\u3068\u306f\u3001 \u30fbJavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5\u304c\u308f\u304b\u3089\u306a\u3044 \u30fbJavaScript\u306elet\u3001const\u3001var\u306e\u4f7f\u3044\u5206\u3051\u304c\u308f\u304b\u3089\u306a\u3089\u3044 \u3067\u3059\u3088\u306d\u3002 \u4eca\u56de\u306f\u305d\u3093\u306a\u304a\u60a9\u307f\u3092\u89e3\u6c7a\u3059\u308b \u30fbJavaScr...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kininariantenna.com\/?p=7566\" \/>\n<meta property=\"og:site_name\" content=\"\u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca\" \/>\n<meta property=\"article:published_time\" content=\"2022-12-06T14:45:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kininariantenna.com\/wp-content\/uploads\/2022\/11\/kini-js.png\" \/>\n\t<meta property=\"og:image:width\" content=\"857\" \/>\n\t<meta property=\"og:image:height\" content=\"607\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"kininariantenna\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/kininariantenna.com\/#website\",\"url\":\"https:\/\/kininariantenna.com\/\",\"name\":\"\u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca\",\"description\":\"WordPress\u958b\u767a\u304b\u3089\u30c8\u30ec\u30f3\u30c9\u307e\u3067\u6c17\u306b\u306a\u308b\u3053\u3068\u3092\u914d\u4fe1\uff01\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/kininariantenna.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"ja\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/kininariantenna.com\/?p=7566#primaryimage\",\"inLanguage\":\"ja\",\"url\":\"http:\/\/kininariantenna.com\/wp-content\/uploads\/2022\/11\/kini-js.png\",\"contentUrl\":\"http:\/\/kininariantenna.com\/wp-content\/uploads\/2022\/11\/kini-js.png\",\"width\":857,\"height\":607,\"caption\":\"JavaScript\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/kininariantenna.com\/?p=7566#webpage\",\"url\":\"https:\/\/kininariantenna.com\/?p=7566\",\"name\":\"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01 - \u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca\",\"isPartOf\":{\"@id\":\"https:\/\/kininariantenna.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/kininariantenna.com\/?p=7566#primaryimage\"},\"datePublished\":\"2022-12-06T14:45:25+00:00\",\"dateModified\":\"2022-12-06T14:45:25+00:00\",\"author\":{\"@id\":\"https:\/\/kininariantenna.com\/#\/schema\/person\/79a4860130f5ccef65193ab07b022a7c\"},\"breadcrumb\":{\"@id\":\"https:\/\/kininariantenna.com\/?p=7566#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/kininariantenna.com\/?p=7566\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/kininariantenna.com\/?p=7566#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u30db\u30fc\u30e0\",\"item\":\"https:\/\/kininariantenna.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01\"}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/kininariantenna.com\/#\/schema\/person\/79a4860130f5ccef65193ab07b022a7c\",\"name\":\"kininariantenna\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/kininariantenna.com\/#personlogo\",\"inLanguage\":\"ja\",\"url\":\"http:\/\/2.gravatar.com\/avatar\/2127fe280190de73b2a2daa819ac6e8c?s=96&d=mm&r=g\",\"contentUrl\":\"http:\/\/2.gravatar.com\/avatar\/2127fe280190de73b2a2daa819ac6e8c?s=96&d=mm&r=g\",\"caption\":\"kininariantenna\"},\"url\":\"http:\/\/kininariantenna.com\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01 - \u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca","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:\/\/kininariantenna.com\/?p=7566","og_locale":"ja_JP","og_type":"article","og_title":"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01 - \u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca","og_description":"\u3051\u3069\u3001\u305d\u3093\u306a\u4e2d\u3067\u60a9\u3080\u3053\u3068\u306f\u3001 \u30fbJavaScript\u3067\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u65b9\u6cd5\u304c\u308f\u304b\u3089\u306a\u3044 \u30fbJavaScript\u306elet\u3001const\u3001var\u306e\u4f7f\u3044\u5206\u3051\u304c\u308f\u304b\u3089\u306a\u3089\u3044 \u3067\u3059\u3088\u306d\u3002 \u4eca\u56de\u306f\u305d\u3093\u306a\u304a\u60a9\u307f\u3092\u89e3\u6c7a\u3059\u308b \u30fbJavaScr...","og_url":"https:\/\/kininariantenna.com\/?p=7566","og_site_name":"\u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca","article_published_time":"2022-12-06T14:45:25+00:00","og_image":[{"width":857,"height":607,"url":"https:\/\/kininariantenna.com\/wp-content\/uploads\/2022\/11\/kini-js.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"kininariantenna","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"1\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/kininariantenna.com\/#website","url":"https:\/\/kininariantenna.com\/","name":"\u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca","description":"WordPress\u958b\u767a\u304b\u3089\u30c8\u30ec\u30f3\u30c9\u307e\u3067\u6c17\u306b\u306a\u308b\u3053\u3068\u3092\u914d\u4fe1\uff01","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/kininariantenna.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"ja"},{"@type":"ImageObject","@id":"https:\/\/kininariantenna.com\/?p=7566#primaryimage","inLanguage":"ja","url":"http:\/\/kininariantenna.com\/wp-content\/uploads\/2022\/11\/kini-js.png","contentUrl":"http:\/\/kininariantenna.com\/wp-content\/uploads\/2022\/11\/kini-js.png","width":857,"height":607,"caption":"JavaScript"},{"@type":"WebPage","@id":"https:\/\/kininariantenna.com\/?p=7566#webpage","url":"https:\/\/kininariantenna.com\/?p=7566","name":"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01 - \u30ad\u30cb\u30ca\u30ea\u30a2\u30f3\u30c6\u30ca","isPartOf":{"@id":"https:\/\/kininariantenna.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/kininariantenna.com\/?p=7566#primaryimage"},"datePublished":"2022-12-06T14:45:25+00:00","dateModified":"2022-12-06T14:45:25+00:00","author":{"@id":"https:\/\/kininariantenna.com\/#\/schema\/person\/79a4860130f5ccef65193ab07b022a7c"},"breadcrumb":{"@id":"https:\/\/kininariantenna.com\/?p=7566#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/kininariantenna.com\/?p=7566"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/kininariantenna.com\/?p=7566#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u30db\u30fc\u30e0","item":"https:\/\/kininariantenna.com\/"},{"@type":"ListItem","position":2,"name":"JavaScript\u306elet\u3001const\u306e\u5909\u6570\u5ba3\u8a00\u307e\u3068\u3081\uff01var\u306e\u9055\u3044\u3082\uff01"}]},{"@type":"Person","@id":"https:\/\/kininariantenna.com\/#\/schema\/person\/79a4860130f5ccef65193ab07b022a7c","name":"kininariantenna","image":{"@type":"ImageObject","@id":"https:\/\/kininariantenna.com\/#personlogo","inLanguage":"ja","url":"http:\/\/2.gravatar.com\/avatar\/2127fe280190de73b2a2daa819ac6e8c?s=96&d=mm&r=g","contentUrl":"http:\/\/2.gravatar.com\/avatar\/2127fe280190de73b2a2daa819ac6e8c?s=96&d=mm&r=g","caption":"kininariantenna"},"url":"http:\/\/kininariantenna.com\/?author=1"}]}},"_links":{"self":[{"href":"http:\/\/kininariantenna.com\/index.php?rest_route=\/wp\/v2\/posts\/7566"}],"collection":[{"href":"http:\/\/kininariantenna.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kininariantenna.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kininariantenna.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/kininariantenna.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7566"}],"version-history":[{"count":1,"href":"http:\/\/kininariantenna.com\/index.php?rest_route=\/wp\/v2\/posts\/7566\/revisions"}],"predecessor-version":[{"id":7567,"href":"http:\/\/kininariantenna.com\/index.php?rest_route=\/wp\/v2\/posts\/7566\/revisions\/7567"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/kininariantenna.com\/index.php?rest_route=\/wp\/v2\/media\/7389"}],"wp:attachment":[{"href":"http:\/\/kininariantenna.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kininariantenna.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7566"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kininariantenna.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}