{"id":9798,"date":"2025-08-22T18:45:47","date_gmt":"2025-08-22T09:45:47","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=9798"},"modified":"2025-08-22T18:45:49","modified_gmt":"2025-08-22T09:45:49","slug":"javascript-addeventlistener","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/javascript-addeventlistener\/","title":{"rendered":"\u3010JavaScript\u5165\u9580\u3011addEventListener()\u3067\u69d8\u3005\u306a\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b"},"content":{"rendered":"\n<p>Web\u30b5\u30a4\u30c8\u3092\u4f5c\u6210\u3059\u308b\u6642\u3001\u753b\u9762\u4e0a\u306b\u30dc\u30bf\u30f3\u3084\u30d5\u30a9\u30fc\u30e0\u306a\u3069\u3001\u69d8\u3005\u306a\u8981\u7d20\u3092\u914d\u7f6e\u3057\u307e\u3059\u3088\u306d\u3002<br>\u305d\u308c\u3089\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u8d77\u3053\u3057\u305f\u969b\u306b\u3001\u30da\u30fc\u30b8\u3092\u9077\u79fb\u3057\u305f\u308a\u3001\u6216\u3044\u306f\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u8868\u793a\u3057\u305f\u308a\u306a\u3069\u3001\u7279\u5b9a\u306e\u51e6\u7406\u3092\u884c\u3046\u5fc5\u8981\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>JavaScript\u306b\u306f\u3001\u305d\u3046\u3057\u305f\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306e\uff11\u3064\u3068\u3057\u3066\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<br>\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__1\" class=\"wp-block-heading\">addEventListener\u30e1\u30bd\u30c3\u30c9\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>addEventListener\u30e1\u30bd\u30c3\u30c9\u306f\u3001JavaScript\u3067\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u884c\u3057\u305f\u3044\u5834\u5408\u306b\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<br>\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3068\u547c\u3070\u308c\u308b\u3001\u7279\u5b9a\u306e\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u5b9f\u884c\u3055\u308c\u308b\u95a2\u6570\u3092\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5bfe\u8c61\u306e\u8981\u7d20\u306b\u767b\u9332\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u5b9a\u306e\u30a4\u30d9\u30f3\u30c8\u3068\u306f\u3001\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3057\u305f\u6642<\/li>\n\n\n\n<li>\u8981\u7d20\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u6642<\/li>\n\n\n\n<li>\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u6642<\/li>\n\n\n\n<li>\u753b\u9762\u304c\u30b9\u30af\u30ed\u30fc\u30eb\u3055\u308c\u305f\u6642<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u4ed6\u306b\u3082\u3001\u69d8\u3005\u306a\u7a2e\u985e\u306e\u30a4\u30d9\u30f3\u30c8\u306b\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">addEventListener\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u65e9\u901f\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_1\" class=\"wp-block-heading\">\u57fa\u672c\u69cb\u6587<\/h3>\n\n\n\n<p>\u307e\u305a\u306f\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u672c\u69cb\u6587\u304b\u3089\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u69cb\u6587\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u57fa\u672c\u69cb\u6587\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\u5bfe\u8c61\u8981\u7d20.addEventListener(\u30a4\u30d9\u30f3\u30c8\u306e\u7a2e\u985e, \u95a2\u6570, \u30aa\u30d7\u30b7\u30e7\u30f3)<\/code><\/pre><\/div>\n\n\n\n<p>\u7b2c1\u5f15\u6570\u306b\u306f\u3001\u95a2\u6570\u3092\u5b9f\u884c\u3055\u305b\u305f\u3044\u30a4\u30d9\u30f3\u30c8\u306e\u7a2e\u985e\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br>\u4f8b\u3048\u3070\u3001\u8981\u7d20\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u969b\u306b\u5b9f\u884c\u3057\u305f\u3044\u5834\u5408\u306f \u300cclick\u300d\u3001\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u6642\u306b\u5b9f\u884c\u3057\u305f\u3044\u5834\u5408\u306f \u300csubmit\u300d \u3068\u3044\u3063\u305f\u3088\u3046\u306b\u3001\u3069\u306e\u30a4\u30d9\u30f3\u30c8\u3067\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u304b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7b2c2\u5f15\u6570\u306b\u306f\u3001\u30a4\u30d9\u30f3\u30c8\u767a\u751f\u6642\u306b\u5b9f\u884c\u3059\u308b\u95a2\u6570\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br>\u3053\u3053\u306b\u6307\u5b9a\u3057\u305f\u95a2\u6570\u306e\u51e6\u7406\u5185\u5bb9\u304c\u3001\u5bfe\u5fdc\u3059\u308b\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7b2c3\u5f15\u6570\u3067\u306f\u3001\u4e3b\u306b\u4ee5\u4e0b\u306e\uff13\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\uff08\u7701\u7565\u53ef\uff09<br>\u65e2\u5b9a\u5024\u306f\u3044\u305a\u308c\u3082 false\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>capture \u2026 true\u306e\u5834\u5408\u306b\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u30ea\u30f3\u30b0\u30d5\u30a7\u30fc\u30ba\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b<\/li>\n\n\n\n<li>passive \u2026 true\u306e\u5834\u5408\u306b\u3001\u30a4\u30d9\u30f3\u30c8\u5185\u3067 preventDefault() \u3092\u547c\u3073\u51fa\u3055\u306a\u3044\u3088\u3046\u306b\u3059\u308b<\/li>\n\n\n\n<li>once \u2026 true\u306e\u5834\u5408\u306b\u30011\u56de\u5b9f\u884c\u3057\u305f\u3089\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3092\u524a\u9664<\/li>\n<\/ul>\n\n\n\n<h3 id=\"outline__2_2\" class=\"wp-block-heading\">\u95a2\u6570\u306e\u5ba3\u8a00\u65b9\u6cd53\u7a2e\u985e\u3092\u307e\u3068\u3081\u3066\u89e3\u8aac<\/h3>\n\n\n\n<p>addEventListener\u30e1\u30bd\u30c3\u30c9\u3067\u6307\u5b9a\u3059\u308b\u95a2\u6570\u306f\u3001\u4e3b\u306b\uff13\u3064\u306e\u66f8\u304d\u65b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>1\u3064\u76ee\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u5916\u3067\u5ba3\u8a00\u3055\u308c\u3066\u3044\u308b\u95a2\u6570\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>const target = document.getElementById(&#39;btn&#39;);\n\nfunction sampleEvent() {\n  \/\/\u51e6\u7406\u5185\u5bb9\n}\n\nbtn.addEventListener(&#39;click&#39;, sampleEvent);<\/code><\/pre><\/div>\n\n\n\n<p>\u5225\u9014\u3067\u5ba3\u8a00\u3057\u305f \u300csampleEvent()\u300d \u3068\u3044\u3046\u95a2\u6570\u3092\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<br>\u51e6\u7406\u5185\u5bb9\u304c\u8907\u96d1\u3067\u3042\u308b\u5834\u5408\u3084\u3001\u8907\u6570\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u5171\u901a\u3059\u308b\u51e6\u7406\u5185\u5bb9\u304c\u3042\u308b\u5834\u5408\u306a\u3069\u306b\u3001\u3053\u306e\u65b9\u6cd5\u3067\u8a18\u8ff0\u3059\u308b\u3068\u6709\u52b9\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u70b9\u3001\u6c17\u3092\u4ed8\u3051\u308b\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u3001\u5916\u90e8\u306e\u95a2\u6570\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f () \u3092\u4ed8\u3051\u305a\u306b\u95a2\u6570\u540d\u306e\u307f\u3092\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>() \u3092\u4ed8\u3051\u3066\u8a18\u8ff0\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u95a2\u6570\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u95a2\u6570\u306e\u5b9f\u884c\u7d50\u679c\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>2\u3064\u76ee\u306f\u3001\u7121\u540d\u95a2\u6570\uff08\u95a2\u6570\u30ea\u30c6\u30e9\u30eb\uff09\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>btn.addEventListener(&#39;click&#39; function() {\n  \/\/\u51e6\u7406\u5185\u5bb9\n});<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u306e\u65b9\u6cd5\u306f\u5148\u7a0b\u3068\u306f\u5909\u308f\u3063\u3066\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u6307\u5b9a\u3059\u308b\u969b\u306b\u95a2\u6570\u3092\u76f4\u63a5\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<br>\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u95a2\u6570\u3092\u5ba3\u8a00\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u5bfe\u8c61\u306e\u8981\u7d20\u3054\u3068\u306e\u51e6\u7406\u304c\u628a\u63e1\u3057\u3084\u3059\u304f\u306a\u308b\u3068\u3044\u3046\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u306e\u51e6\u7406\u5185\u5bb9\u304c\u591a\u3044\u5834\u5408\u306b\u306f\u3001\u53cd\u5bfe\u306b\u30b3\u30fc\u30c9\u304c\u898b\u8f9b\u304f\u306a\u3063\u3066\u3057\u307e\u3046\u539f\u56e0\u306b\u3082\u306a\u308a\u304b\u306d\u306a\u3044\u305f\u3081\u3001\u5b9f\u884c\u3059\u308b\u51e6\u7406\u304c\u6bd4\u8f03\u7684\u5358\u7d14\u3067\u3042\u308b\u5834\u5408\u306b\u6d3b\u7528\u3059\u308b\u3068\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>3\u3064\u76ee\u306f\u3001\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<br>\u30a2\u30ed\u30fc\u95a2\u6570\u3068\u306f &#8220;=>&#8221; \u3068\u3044\u3046\u77e2\u5370\u306e\u3088\u3046\u306a\u8a18\u53f7\u8868\u8a18\u3092\u7528\u3044\u305f\u95a2\u6570\u306e\u8a18\u8ff0\u65b9\u6cd5\u3067\u3001\u95a2\u6570\u30ea\u30c6\u30e9\u30eb\u3092\u3088\u308a\u7c21\u6f54\u306b\u8a18\u8ff0\u3059\u308b\u969b\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>btn.addEventListener(&#39;click&#39;, () =&gt; {\n  \/\/\u51e6\u7406\u5185\u5bb9\n});<\/code><\/pre><\/div>\n\n\n\n<p>\u51e6\u7406\u5185\u5bb9\u304c\u4e00\u6587\u3067\u5b8c\u4e86\u3059\u308b\u5834\u5408\u306b\u95a2\u6570\u30b9\u30b3\u30fc\u30d7\u3092\u8868\u3059 {} \u3092\u7701\u7565\u3067\u304d\u305f\u308a\u3068\u3001\u5c11\u306a\u3044\u30b3\u30fc\u30c9\u91cf\u3067\u8a18\u8ff0\u3067\u304d\u308b\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_3\" class=\"wp-block-heading\">\u3010\u4f8b\u3011click\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b<\/h3>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u5b9f\u969b\u306b\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u767b\u9332\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u3001\u4ee5\u4e0b\u306e\u30dc\u30bf\u30f3\u8981\u7d20\u306b\u5bfe\u3057\u3066\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3001\u30dc\u30bf\u30f3\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u969b\u306b\u5b9f\u884c\u3059\u308b\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u8ffd\u52a0\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010HTML\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;button id=&quot;btn&quot;&gt;\u30b5\u30f3\u30d7\u30eb\u30dc\u30bf\u30f3&lt;\/button&gt;<\/code><\/pre><\/div>\n\n\n\n<p>\u8981\u7d20\u306b ID\u304c\u5272\u308a\u632f\u3089\u308c\u3066\u3044\u308b\u306e\u3067\u3001getElementById\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001JavaScript\u3067\u5bfe\u8c61\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8981\u7d20\u304c\u53d6\u5f97\u3067\u304d\u305f\u3089\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3067\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3092\u767b\u9332\u3057\u307e\u3059\u3002<br>\u30dc\u30bf\u30f3\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u969b\u306b\u95a2\u6570\u3092\u5b9f\u884c\u3057\u305f\u3044\u306e\u3067\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c\uff11\u5f15\u6570\u306b\u306f \u300cclick\u300d \u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>const btn = document.getElementById(&#39;btn&#39;);\n\nbtn.addEventListener(&#39;click&#39;, () =&gt; {\n    console.log(&#39;\u30af\u30ea\u30c3\u30af\u3055\u308c\u307e\u3057\u305f\uff01&#39;);\n});<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u308c\u3067\u3001\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u969b\u306b\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<br>\u57fa\u672c\u306e\u6d41\u308c\u306f\u3053\u306e\u3088\u3046\u306b\u3001ID\u306a\u3069\u3092\u5143\u306b\u8981\u7d20\u3092\u53d6\u5f97\u3057\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3067\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3092\u767b\u9332\u3059\u308b\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">\u4e3b\u8981\u306aDOM\u30a4\u30d9\u30f3\u30c8\u4e00\u89a7<\/h2>\n\n\n\n<p>\u57fa\u672c\u7684\u306a\u64cd\u4f5c\u65b9\u6cd5\u306b\u3064\u3044\u3066\u78ba\u8a8d\u3057\u7d42\u3048\u305f\u3068\u3053\u308d\u3067\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3067\u6307\u5b9a\u53ef\u80fd\u306a\u30a4\u30d9\u30f3\u30c8\u306e\u7a2e\u985e\u306b\u3064\u3044\u3066\u3082\u89e3\u8aac\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5168\u3066\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u898b\u308b\u306b\u306f\u6570\u304c\u3042\u307e\u308a\u306b\u591a\u3059\u304e\u308b\u305f\u3081\u3001\u4eca\u56de\u306f\u3088\u304f\u4f7f\u308f\u308c\u308b\u3082\u306e\u3092\u3044\u304f\u3064\u304b\u629c\u7c8b\u3057\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010Window\u3011<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>load\u00a0\u2026 \u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3057\u305f\u6642<\/li>\n\n\n\n<li>resize \u2026 \u753b\u9762\u306e\u30b5\u30a4\u30ba\u304c\u5909\u308f\u3063\u305f\u6642<\/li>\n\n\n\n<li>blur &#8230; \u30a6\u30a3\u30f3\u30c9\u30a6\u304b\u3089\u30d5\u30a9\u30fc\u30ab\u30b9\u304c\u5916\u308c\u305f\u6642<\/li>\n\n\n\n<li>focus &#8230;. \u30a6\u30a3\u30f3\u30c9\u30a6\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u304c\u5f53\u305f\u3063\u305f\u6642<\/li>\n<\/ul>\n\n\n\n<p><strong>\u3010Document\u3011<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DOMContentLoaded\u00a0 \u2026 DOM\u306e\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3057\u305f\u6642<\/li>\n\n\n\n<li>scroll \u2026 \u753b\u9762\u3092\u30b9\u30af\u30ed\u30fc\u30eb\u3057\u305f\u6642<\/li>\n<\/ul>\n\n\n\n<p><strong>\u3010Element\u3011<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>click\u00a0\u2026 \u8981\u7d20\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u6642<\/li>\n\n\n\n<li>dblclick \u2026 \u8981\u7d20\u304c\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u6642<\/li>\n\n\n\n<li>contextmenu \u2026 \u8981\u7d20\u304c\u53f3\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u6642<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>mousedown \u2026 \u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u6642<\/li>\n\n\n\n<li>mouseup \u2026 \u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u72b6\u614b\u304b\u3089\u96e2\u3057\u305f\u6642<\/li>\n\n\n\n<li>mouseover \u2026 \u30de\u30a6\u30b9\u304c\u8981\u7d20\u306e\u4e0a\u306b\u3042\u308b\u6642<\/li>\n\n\n\n<li>mouseout \u2026 \u30de\u30a6\u30b9\u304c\u8981\u7d20\u304b\u3089\u96e2\u308c\u305f\u6642<\/li>\n\n\n\n<li>mousemove \u2026 \u30de\u30a6\u30b9\u304c\u8981\u7d20\u306e\u4e0a\u3067\u79fb\u52d5\u3057\u305f\u6642<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>submit \u2026 submit\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u6642<\/li>\n\n\n\n<li>reset \u2026 \u30d5\u30a9\u30fc\u30e0\u306e\u5185\u5bb9\u304c\u30ea\u30bb\u30c3\u30c8\u3055\u308c\u305f\u6642<\/li>\n\n\n\n<li>change \u2026 \u30d5\u30a9\u30fc\u30e0\u306e\u9078\u629e\u72b6\u614b\u3084\u5165\u529b\u5185\u5bb9\u304c\u5909\u66f4\u3055\u308c\u305f\u6642<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>keydown \u2026 \u30ad\u30fc\u3092\u62bc\u3057\u305f\u6642<\/li>\n\n\n\n<li>keyup \u2026 \u30ad\u30fc\u3092\u62bc\u3057\u305f\u72b6\u614b\u304b\u3089\u96e2\u3057\u305f\u6642<\/li>\n\n\n\n<li>keypress \u2026 \u30ad\u30fc\u3092\u62bc\u3057\u3066\u3044\u308b\u72b6\u614b\u306e\u6642<\/li>\n<\/ul>\n\n\n\n<p>\u4e00\u5ea6\u306b\u5168\u3066\u3092\u899a\u3048\u308b\u306e\u306f\u5927\u5909\u306a\u306e\u3067\u3001\u3088\u304f\u4f7f\u7528\u3059\u308b\u3082\u306e\u304b\u3089\u9806\u306b\u899a\u3048\u3066\u3044\u304f\u3068\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_1\" class=\"wp-block-heading\">&#8220;change&#8221;\u30a4\u30d9\u30f3\u30c8\u3067\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b<\/h3>\n\n\n\n<p>\u30d5\u30a9\u30fc\u30e0\u306e\u9078\u629e\u72b6\u614b\u3084\u5165\u529b\u5185\u5bb9\u304c\u5909\u5316\u3057\u305f\u969b\u306b\u3001\u52d5\u4f5c\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b\u3088\u304f\u4f7f\u308f\u308c\u308b\u306e\u304c \u300cchange\u300d \u30a4\u30d9\u30f3\u30c8\u3067\u3059\u3002<br>\u4f8b\u3048\u3070\u3001\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u304c\u30c1\u30a7\u30c3\u30af\u3055\u308c\u305f\u6642\u3084\u3001\u30c6\u30ad\u30b9\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u6587\u5b57\u5217\u304c\u5165\u529b\u3055\u308c\u305f\u5f8c\u306a\u3069\u306b\u3001\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u706b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u3010HTML\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;form name=&quot;sampleForm&quot;&gt;\n  &lt;input name=&quot;textField&quot; type=&quot;text&quot;&gt;\n&lt;\/form&gt;<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010JavaScript\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>const form = document.forms.sampleForm;\n\nform.textField.addEventListener(&#39;change&#39;, () =&gt; {\n  console.log(&#39;\u5165\u529b\u3055\u308c\u307e\u3057\u305f\uff01&#39;);\n});<\/code><\/pre><\/div>\n\n\n\n<p>\u30d5\u30a9\u30fc\u30e0\u5185\u306e\u30c6\u30ad\u30b9\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3057\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066 \u300cchange\u300d \u30a4\u30d9\u30f3\u30c8\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u30c6\u30ad\u30b9\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u6587\u5b57\u5217\u3092\u5165\u529b\u3059\u308b\u304b\u3001\u6216\u3044\u306f\u5165\u529b\u6e08\u307f\u306e\u6587\u5b57\u5217\u3092\u524a\u9664\u3057\u305f\u5f8c\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u304b\u3089\u30d5\u30a9\u30fc\u30ab\u30b9\u304c\u5916\u308c\u308b\u3068\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u306a\u304a\u3001change\u30a4\u30d9\u30f3\u30c8\u306e\u5bfe\u8c61\u306b\u3067\u304d\u308b\u8981\u7d20\u306f\u3001input\u8981\u7d20\u30fbselect\u8981\u7d20\u30fbtextarea\u8981\u7d20\u306e\uff13\u3064\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_2\" class=\"wp-block-heading\">&#8220;keydown&#8221;\/&#8221;keyup&#8221;\u30a4\u30d9\u30f3\u30c8\u3067\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b<\/h3>\n\n\n\n<p>\u7d9a\u3044\u3066\u3001\u30ad\u30fc\u30dc\u30fc\u30c9\u5165\u529b\u306b\u95a2\u3057\u3066\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u30a4\u30d9\u30f3\u30c8\u306b\u3001 \u300ckeydown\u300d \u30a4\u30d9\u30f3\u30c8\u3068 \u300ckeyup\u300d \u304c\u3042\u308b\u306e\u3067\u3001\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>keydown\u30a4\u30d9\u30f3\u30c8\u306f\u30ad\u30fc\u30dc\u30fc\u30c9\u306e\u30ad\u30fc\u3092\u62bc\u3057\u305f\u6642\u3001keyup\u30a4\u30d9\u30f3\u30c8\u306f\u62bc\u3057\u305f\u72b6\u614b\u304b\u3089\u96e2\u3057\u305f\u6642\u306b\u767a\u52d5\u3059\u308b\u30a4\u30d9\u30f3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u3010HTML\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;textarea id=&quot;textArea&quot;&gt;&lt;\/textarea&gt;<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010JavaScript\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>const textArea = document.getElementById(&#39;textArea&#39;);\n\ntextArea.addEventListener(&#39;keydown&#39;, () =&gt; {\n  console.log(&#39;\u30ad\u30fc\u304c\u62bc\u3055\u308c\u307e\u3057\u305f&#39;);\n});<\/code><\/pre><\/div>\n\n\n\n<p>\u4e0a\u8a18\u306e\u4f8b\u306e\u5834\u5408\u306f\u3001\u30ad\u30fc\u304c\u62bc\u3055\u308c\u305f\u969b\u306b\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<br>\u30a4\u30d9\u30f3\u30c8\u540d\u3092 keyup \u306b\u5909\u66f4\u3059\u308b\u3068\u3001\u96e2\u3057\u305f\u969b\u306b\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_3\" class=\"wp-block-heading\">&#8220;DOMContentLoaded&#8221;\u30a4\u30d9\u30f3\u30c8\u3067\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b<\/h3>\n\n\n\n<p>\u7d9a\u3044\u3066\u306f\u3001\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u5b8c\u4e86\u6642\u306b\u767a\u706b\u3059\u308b\u30a4\u30d9\u30f3\u30c8\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8aad\u307f\u8fbc\u307f\u5b8c\u4e86\u6642\u306b\u4f7f\u7528\u3059\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u4e3b\u306b\u3001\u300cload\u300d \u30a4\u30d9\u30f3\u30c8\u3068 \u300cDOMContentLoaded\u300d \u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<br>\u3069\u3061\u3089\u3082\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u306b\u95a2\u3059\u308b\u30a4\u30d9\u30f3\u30c8\u3067\u3059\u304c\u3001\u767a\u706b\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u305d\u308c\u305e\u308c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>load\u30a4\u30d9\u30f3\u30c8\u306f\u3001DOM\u30c4\u30ea\u30fc\u306e\u8aad\u307f\u8fbc\u307f\u3092\u884c\u3063\u305f\u5f8c\u3001\u753b\u50cf\u3084CSS\u306a\u3069\u306e\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u307e\u3067\u5168\u3066\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3057\u305f\u6bb5\u968e\u3067\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u706b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3001DOMContentLoaded\u30a4\u30d9\u30f3\u30c8\u306f\u3001DOM\u306e\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3057\u305f\u6bb5\u968e\u3067\u767a\u706b\u3055\u308c\u308b\u305f\u3081\u3001load\u30a4\u30d9\u30f3\u30c8\u3088\u308a\u3082\u65e9\u304f\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>DOMContentLoaded\u30a4\u30d9\u30f3\u30c8\u306e\u5834\u5408\u306f\u3001Document\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3057\u3066\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>document.addEventListener(&#39;DOMContentLoaded&#39;, () =&gt; {\n    console.log(&#39;\u30da\u30fc\u30b8\u304c\u8aad\u307f\u8fbc\u307e\u308c\u307e\u3057\u305f\uff01&#39;);\n});<\/code><\/pre><\/div>\n\n\n\n<p>DOMContentLoaded\u30a4\u30d9\u30f3\u30c8\u306fDOM\u30c4\u30ea\u30fc\u306e\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3059\u308b\u3068\u3001\u305d\u306e\u6642\u70b9\u3067\u753b\u50cf\u306a\u3069\u306e\u8aad\u307f\u8fbc\u307f\u3092\u5f85\u305f\u305a\u306b\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u305f\u3081\u3001\u5168\u3066\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u63c3\u3063\u3066\u304b\u3089\u51e6\u7406\u3092\u884c\u3044\u305f\u3044\u5834\u5408\u306b\u306f\u4ee3\u308f\u308a\u306bload\u30a4\u30d9\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">1\u3064\u306e\u8981\u7d20\u306b\u8907\u6570\u306e\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u8ffd\u52a0\u3059\u308b<\/h2>\n\n\n\n<p>addEventListener\u30e1\u30bd\u30c3\u30c9\u306b\u306f\u3001\uff11\u3064\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u540c\u3058\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u3092\u8907\u6570\u767b\u9332\u3067\u304d\u308b\u3068\u3044\u3046\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>JavaScript\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u767b\u9332\u3059\u308b\u65b9\u6cd5\u306b\u306f\u3001\u300conclick\u300d \u3068\u3044\u3063\u305f\u3088\u3046\u306b\u3001on~\u306e\u4ed8\u304f\u5f62\u5f0f\u306e\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u3067\u8a18\u8ff0\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u5834\u5408\u306f\u540c\u3058\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u3092\u8907\u6570\u767b\u9332\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001onclick\u30a4\u30d9\u30f3\u30c8\u3092\uff11\u3064\u306e\u8981\u7d20\u306b\u8907\u6570\u767b\u9332\u3057\u3088\u3046\u3068\u3057\u305f\u5834\u5408\u306b\u3001\u5b9f\u884c\u3055\u308c\u308b\u306e\u306f\uff12\u3064\u76ee\u306b\u767b\u9332\u3057\u305f\u95a2\u6570\u306e\u307f\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>const button = document.getElementById(&#39;btn&#39;);\n\nbutton.onclick = function() {\n  console.log(&#39;\uff11\u56de\u76ee\u306e\u767b\u9332&#39;);\n};\nbutton.onclick = function(){\n  console.log(&#39;\uff12\u56de\u76ee\u306e\u767b\u9332&#39;);\n};<\/code><\/pre><\/div>\n\n\n\n<p>\u4e00\u65b9\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u3069\u3061\u3089\u306e\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3082\u540c\u3058\u8981\u7d20\u306b\u767b\u9332\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u8907\u6570\u767b\u9332\u3057\u305f\u969b\u306e\u95a2\u6570\u306e\u5b9f\u884c\u9806\u306f\u3001\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u306e\u767b\u9332\u9806\u306b\u6e96\u62e0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u3053\u3053\u307e\u3067\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>Web\u30b5\u30a4\u30c8\u3092\u4f5c\u6210\u3059\u308b\u4e0a\u3067\u3001\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u306f\u5fc5\u305a\u5fc5\u8981\u306b\u306a\u308b\u6a5f\u80fd\u306e\uff11\u3064\u3067\u3059\u3002<br>\u3057\u3063\u304b\u308a\u3068\u4f7f\u3044\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3066\u3001\u958b\u767a\u306b\u5f79\u7acb\u3066\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading\">\u95a2\u9023\u8a18\u4e8b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/techmania.jp\/blog\/javascript0001\/\">JavaScript\u3068\u306f\uff1f\u521d\u5fc3\u8005\u5411\u3051\u306b\u3067\u304d\u308b\u3053\u3068\u3084\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u3092\u89e3\u8aac<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/techmania.jp\/blog\/javascript0002\/\">JavaScript\u304c\u521d\u5fc3\u8005\u306b\u304a\u30b9\u30b9\u30e1\u306a\u7406\u7531\u3092\u73fe\u5f79\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u89e3\u8aac<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/techmania.jp\/blog\/programming0012\/\">\u3010JavaScript\u5165\u9580\u3011\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u7fd2\u5f97<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/techmania.jp\/blog\/javascript-getelementbyid\/\">\u3010JavaScript\u5165\u9580\u3011getElementById\u306e\u4f7f\u3044\u65b9\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u5fb9\u5e95\u89e3\u8aac<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/techmania.jp\/blog\/javascript-foreach\/\">\u3010JavaScript\u5165\u9580\u3011forEach\u30e1\u30bd\u30c3\u30c9\u3067\u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u51e6\u7406\u3092\u7e70\u308a\u8fd4\u3059\uff01\u4f7f\u3044\u65b9\u304b\u3089\u6ce8\u610f\u70b9\u307e\u3067\u5fb9\u5e95\u89e3\u8aac<\/a><\/li>\n<\/ul>\n\n\n\n<h2 id=\"outline__7\" class=\"wp-block-heading\">JavaScript\u306e\u52c9\u5f37\u65b9\u6cd5\u306f\uff1f<\/h2>\n\n\n<p>\u66f8\u7c4d\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u5b66\u7fd2\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u6628\u4eca\u3067\u306f\u3001YouTube\u306a\u3069\u306e\u52d5\u753b\u30b5\u30a4\u30c8\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30a4\u30c8\u306a\u3069\u3082\u5145\u5b9f\u3057\u3066\u3044\u3066\u591a\u304f\u306e\u60c5\u5831\u304c\u624b\u306b\u5165\u308a\u307e\u3059\u3002<br \/>\u305d\u3057\u3066\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3059\u308b\u306b\u306f\u3001\u77e5\u8b58\u3092\u3064\u3051\u306a\u304c\u3089\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u307f\u308b\u306a\u3069\u3001\u30a4\u30f3\u30d7\u30c3\u30c8\u3068\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u72ec\u5b66\u306e\u5834\u5408\u306f\u3001\u6709\u8b58\u8005\u306b\u8cea\u554f\u304c\u3067\u304d\u305f\u308a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u3082\u3089\u3048\u308b\u3088\u3046\u306a\u74b0\u5883\u304c\u3042\u308b\u3068\u3001\u7406\u89e3\u5ea6\u304c\u6df1\u307e\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u305f\u3060\u3001JavaScript\u306b\u9650\u3089\u305a\u3001IT\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u308b\u969b\u3001\u3069\u3046\u3057\u3066\u3082\u8ab2\u984c\u306b\u3076\u3064\u304b\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3088\u306d\u3002\u7279\u306b\u72ec\u5b66\u3060\u3068\u3001\u308f\u304b\u3089\u306a\u3044\u90e8\u5206\u3092\u30d7\u30ed\u306b\u8cea\u554f\u3067\u304d\u308b\u6a5f\u4f1a\u3092\u78ba\u4fdd\u3057\u306b\u304f\u304f\u3001\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u304c\u7d9a\u304d\u306b\u304f\u3044\u3068\u3044\u3046\u5074\u9762\u304c\u3042\u308a\u307e\u3059\u3002\u72ec\u5b66\u3067\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3059\u308b\u81ea\u4fe1\u304c\u306a\u3044\u4eba\u306b\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3068\u3044\u3046\u624b\u3082\u3042\u308a\u307e\u3059\u3002\u8cbb\u7528\u306f\u639b\u304b\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u5206\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u3084\u3059\u3044\u3067\u3059\u3002\u3057\u3063\u304b\u308a\u3068\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3057\u3066\u5b9f\u8df5\u306b\u6d3b\u304b\u3057\u305f\u3044\u3068\u3044\u3046\u4eba\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<p><span class=\"markerYellow\"><strong>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u306a\u3089\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u304c\u304a\u3059\u3059\u3081\uff01<\/strong><\/span><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/yuudou.png\" alt=\"\" class=\"post-img\" 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JavaScript\u306b\u306f\u3001\u305d\u3046\u3057\u305f\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306e\uff11\u3064\u3068\u3057\u3066\u3001addEventListener\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f\u3001addEventList [&hellip;]","protected":false},"author":11,"featured_media":9807,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/js-addeventlistener.webp","fifu_image_alt":"\u3010JavaScript\u5165\u9580\u3011addEventListener()\u3067\u69d8\u3005\u306a\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b","footnotes":""},"categories":[15],"tags":[],"class_list":["post-9798","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming"],"_links":{"self":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/9798","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/comments?post=9798"}],"version-history":[{"count":5,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/9798\/revisions"}],"predecessor-version":[{"id":9806,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/9798\/revisions\/9806"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/media\/9807"}],"wp:attachment":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/media?parent=9798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/categories?post=9798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/tags?post=9798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}