{"id":9808,"date":"2025-08-22T20:52:35","date_gmt":"2025-08-22T11:52:35","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=9808"},"modified":"2025-11-28T21:23:40","modified_gmt":"2025-11-28T12:23:40","slug":"javascript-replace","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/javascript-replace\/","title":{"rendered":"\u3010JavaScript\u5165\u9580\u3011replace()\u30e1\u30bd\u30c3\u30c9\u3067\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b"},"content":{"rendered":"\n<p>\u6587\u5b57\u5217\u3092\u6271\u3046\u969b\u306b\u3001\u7279\u5b9a\u306e\u6587\u5b57\u5217\u3092\u5225\u306e\u6587\u5b57\u5217\u306b\u7f6e\u304d\u63db\u3048\u308b\u64cd\u4f5c\u3092\u3059\u308b\u3053\u3068\u306f\u3088\u304f\u3042\u308a\u307e\u3059\u3088\u306d\u3002<br>\u3067\u3059\u304c\u3001\u30c6\u30ad\u30b9\u30c8\u30a8\u30c7\u30a3\u30bf\u30671\u30641\u3064\u691c\u7d22\u3057\u3066\u66f8\u304d\u63db\u3048\u308b\u306e\u306f\u52b9\u7387\u7684\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u307e\u3068\u3081\u3066\u7f6e\u304d\u63db\u3048\u305f\u3044\u3068\u3044\u3046\u3053\u3068\u304c\u591a\u3005\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u969b\u306b\u6d3b\u7528\u3067\u304d\u308b\u306e\u304c\u3001replace\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u3001replace\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u3001\u5b9f\u8df5\u7684\u306a\u5185\u5bb9\u307e\u3067\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\">JavaScript\u306ereplace\u30e1\u30bd\u30c3\u30c9\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>replace\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6587\u5b57\u5217\u306e\u4e2d\u306b\u5b58\u5728\u3059\u308b\u7279\u5b9a\u306e\u8a18\u53f7\u3084\u6587\u5b57\u306a\u3069\u3092\u3001\u5225\u306e\u6587\u5b57\u306b\u7f6e\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u6587\u5b57\u5217\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u7a7a\u767d\u6587\u5b57\u3092\u524a\u9664\u3057\u305f\u3044\u3001\u3042\u308b\u3044\u306f\u65e5\u4ed8\u306e\u8868\u8a18\u3092\u4efb\u610f\u306e\u66f8\u5f0f\u306b\u5909\u66f4\u3057\u305f\u3044\u306a\u3069\u3001\u6587\u5b57\u5217\u306e\u4e00\u90e8\u306e\u307f\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6587\u5b57\u5217\u3092\u6271\u3046\u969b\u306b\u3001\u53d6\u5f97\u3057\u305f\u30c7\u30fc\u30bf\u304c\u671f\u5f85\u3059\u308b\u66f8\u5f0f\u3068\u4e00\u81f4\u3057\u306a\u3044\u30b1\u30fc\u30b9\u306a\u3069\u306f\u3088\u304f\u3042\u308b\u305f\u3081\u3001\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5168\u4f53\u3067\u898b\u3066\u3082\u4f7f\u7528\u983b\u5ea6\u306f\u6bd4\u8f03\u7684\u9ad8\u3081\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308b\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">replace\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u65e9\u901f\u3001replace\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\u3001replace\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\u306b\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\u306e\u6587\u5b57\u5217.replace(\u7f6e\u63db\u3059\u308b\u6587\u5b57, \u7f6e\u63db\u5f8c\u306e\u6587\u5b57);<\/code><\/pre><\/div>\n\n\n\n<p>\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c\uff11\u5f15\u6570\u306b\u7f6e\u63db\u3057\u305f\u3044\u6587\u5b57\u3092\u6307\u5b9a\u3057\u3001\u7b2c\uff12\u5f15\u6570\u306b\u3069\u306e\u6587\u5b57\u3078\u3068\u7f6e\u63db\u3059\u308b\u304b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br>\u3053\u308c\u306b\u3088\u308a\u3001\u6587\u5b57\u5217\u5185\u306b\u3042\u308b\u5bfe\u8c61\u306e\u6587\u5b57\u3092\u7b2c\uff12\u5f15\u6570\u3067\u6307\u5b9a\u3057\u305f\u6587\u5b57\u3078\u3068\u7f6e\u63db\u3057\u3001\u7f6e\u304d\u63db\u3048\u305f\u72b6\u614b\u306e\u6587\u5b57\u5217\u3092\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u3068\u3057\u3066\u8fd4\u5374\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_2\" class=\"wp-block-heading\">\u4efb\u610f\u306e\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b<\/h3>\n\n\n\n<p>\u3010\u7df4\u7fd2\u3011<\/p>\n\n\n\n<p>\u4e0b\u306e\u67a0\u3067\u3001\u6587\u5b57\u5217\u300csampleString\u300d\u3092\u7f6e\u63db\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\u203b\u7d9a\u3051\u3066\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<iframe loading=\"lazy\" src=\"https:\/\/paiza.io\/projects\/e\/O3jS3m_G_FYilTWZueyvpQ?theme=twilight\" width=\"100%\" height=\"500\"><\/iframe>\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>\/\/ \u7f6e\u63db\u5bfe\u8c61\u306e\u6587\u5b57\u5217\nconst sampleString = &quot;sampleString&quot;;\n\/\/ \u7f6e\u63db\u524d\u306e\u6587\u5b57\u5217\u3092\u8868\u793a\nconsole.log(sampleString);\n\n\/\/ \u7f6e\u63db\u51e6\u7406\nconst resultString = sampleString.replace(&quot;sample&quot;, &quot;test&quot;);\n\/\/ \u7d50\u679c\u8868\u793a\nconsole.log(resultString);<\/code><\/pre><\/div>\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-plain\"><code>sampleString\ntestString<\/code><\/pre><\/div>\n\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/images\/techmania\/thumbnail\/images\/replace_1.webp\" class=\"post-img\" alt=\"replace\" width=\"640\" loading=\"lazy\">\n\n\n\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001\u6587\u5b57\u5217\u5185\u306b\u3042\u308b \u300csample\u300d \u306e\u6587\u5b57\u3092 \u300ctest\u300d \u3078\u3068\u7f6e\u63db\u3057\u3066\u3044\u307e\u3059\u3002<br>\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\u901a\u308a\u306b\u7f6e\u304d\u63db\u308f\u3063\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>replace\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u672c\u7684\u306a\u52d5\u304d\u306f\u3001\u4ee5\u4e0a\u306e\u901a\u308a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_3\" class=\"wp-block-heading\">\u8907\u6570\u306e\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b<\/h3>\n\n\n\n<p>JavaScript\u306e replace\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u306b\u3042\u305f\u308a\u3001\u6c17\u3092\u4ed8\u3051\u308b\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305a\u306f\u3001\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u307f\u3066\u304f\u3060\u3055\u3044\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 sampleString = &quot;2020-08-20&quot;;\n\nconst resultString = sampleString.replace(&quot;-&quot;, &quot;\/&quot;);\n\nconsole.log(resultString);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>2020\/08-20<\/code><\/pre><\/div>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u6587\u5b57\u5217\u5185\u306b\uff12\u3064\u5b58\u5728\u3059\u308b\u5bfe\u8c61\u306e\u6587\u5b57\u306e\u3046\u3061\u3001\u6700\u521d\u306e\uff11\u3064\u3057\u304b\u7f6e\u63db\u3055\u308c\u3066\u3044\u306a\u3044\u306e\u304c\u5206\u304b\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001JavaScript\u306e replace \u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u6307\u5b9a\u306e\u6587\u5b57\u304c\u8907\u6570\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u3001\u6700\u521d\u306b\u4e00\u81f4\u3057\u305f\u6587\u5b57\u3057\u304b\u7f6e\u63db\u3055\u308c\u307e\u305b\u3093\u3002<br>\u4ed6\u306e\u8a00\u8a9e\u3067\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u540d\u306f\u540c\u69d8\u3067\u3082\u5168\u3066\u306e\u6587\u5b57\u304c\u7f6e\u63db\u3055\u308c\u308b\u30b1\u30fc\u30b9\u304c\u591a\u3044\u305f\u3081\u3001JavaScript\u4ee5\u5916\u306e\u8a00\u8a9e\u306b\u6163\u308c\u3066\u3044\u308b\u4eba\u306f\u7279\u306b\u6ce8\u610f\u3059\u308b\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u307e\u3067\u89e3\u8aac\u3057\u305f\u57fa\u672c\u7684\u306a\u65b9\u6cd5\u3067\u5168\u3066\u306e\u6587\u5b57\u3092\u7f6e\u63db\u3057\u3088\u3046\u3068\u3059\u308b\u5834\u5408\u3001replace\u30e1\u30bd\u30c3\u30c9\u3092\u7e70\u308a\u8fd4\u3057\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u53cd\u5fa9\u51e6\u7406\u3092\u4f7f\u7528\u3057\u3066\u3001\u5168\u3066\u306e\u6587\u5b57\u304c\u7f6e\u63db\u3055\u308c\u308b\u307e\u3067 replace\u30e1\u30bd\u30c3\u30c9\u3092\u7e70\u308a\u8fd4\u3059\u3068\u3044\u3063\u305f\u65b9\u6cd5\u304c\u3067\u304d\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>let str = &quot;2020-08-20&quot;;\nlet result = str.replace(&quot;-&quot;, &quot;\/&quot;);\n\nwhile(str !== result) {\n\n    str = result;\n    result = result.replace(&quot;-&quot;, &quot;\/&quot;);\n}\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>2020\/08\/20<\/code><\/pre><\/div>\n\n\n\n<p>\u5148\u307b\u3069\u3068\u306f\u5909\u308f\u308a\u3001\u5bfe\u8c61\u306e\u6587\u5b57\u304c\u5168\u3066\u7f6e\u63db\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<br>\u7d50\u679c\u3060\u3051\u3067\u8a00\u3048\u3070\u3001\u4e0a\u8a18\u306e\u65b9\u6cd5\u3067\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u306f\u5341\u5206\u53ef\u80fd\u3067\u3042\u308b\u3088\u3046\u306b\u898b\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3067\u3059\u304c\u3001\u3053\u306e\u3084\u308a\u65b9\u3067\u306f\u8a18\u8ff0\u3059\u308b\u30b3\u30fc\u30c9\u91cf\u304c\u5fc5\u7136\u7684\u306b\u591a\u304f\u306a\u3063\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u52b9\u7387\u3084\u53ef\u8aad\u6027\u306e\u9ad8\u3055\u3068\u3044\u3063\u305f\u70b9\u304b\u3089\u898b\u308b\u3068\u3001\u3042\u307e\u308a\u826f\u3044\u65b9\u6cd5\u3067\u3042\u308b\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u5834\u5408\u306f\u554f\u984c\u306a\u304f\u5b9f\u884c\u3067\u304d\u307e\u3059\u304c\u3001\u5185\u5bb9\u306b\u3088\u3063\u3066\u306f\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u306a\u3063\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<br>\u5b89\u5168\u6027\u306e\u70b9\u304b\u3089\u898b\u3066\u3082\u3001\u610f\u56f3\u3057\u306a\u3044\u52d5\u4f5c\u3084\u4e0d\u5177\u5408\u304c\u767a\u751f\u3057\u3084\u3059\u304f\u3001\u904b\u7528\u306b\u306f\u5411\u304b\u306a\u3044\u65b9\u6cd5\u3067\u3042\u308b\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>JavaScript\u3067\u306f\u3001\u4e0a\u8ff0\u306e\u65b9\u6cd5\u3092\u4f7f\u7528\u305b\u305a\u3068\u3082\u3001\u5c11\u306a\u3044\u30b3\u30fc\u30c9\u3067\u5b89\u5168\u306b\u5b9f\u884c\u3067\u304d\u308b\u65b9\u6cd5\u304c\u3044\u304f\u3064\u304b\u5b58\u5728\u3057\u307e\u3059\u3002<br>\u305d\u308c\u305e\u308c\u306e\u4f7f\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u9806\u306b\u8aac\u660e\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_4\" class=\"wp-block-heading\">\u8907\u6570\u306e\u6587\u5b57\u5217\u3092replaceAll()\u3067\u5168\u3066\u7f6e\u63db\u3059\u308b<\/h3>\n\n\n\n<p>\u6587\u5b57\u5217\u5185\u306b\u5bfe\u8c61\u306e\u6587\u5b57\u304c\u8907\u6570\u3042\u308b\u5834\u5408\u306b\u3001\u5168\u3066\u3092\u7f6e\u63db\u3067\u304d\u308b\u65b9\u6cd5\u306e\uff11\u3064\u304c\u3001replaceAll\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u3059\u308b\u969b\u306e\u57fa\u672c\u69cb\u6587\u306f\u3001replace\u30e1\u30bd\u30c3\u30c9\u3068\u307b\u3068\u3093\u3069\u5909\u308f\u308a\u307e\u305b\u3093\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\u306e\u6587\u5b57\u5217.replaceAll( \u7f6e\u63db\u3059\u308b\u6587\u5b57, \u7f6e\u63db\u5f8c\u306e\u6587\u5b57 );<\/code><\/pre><\/div>\n\n\n\n<p>\u7b2c\uff11\u5f15\u6570\u306b\u7f6e\u63db\u5bfe\u8c61\u306e\u6587\u5b57\u3092\u6307\u5b9a\u3057\u3001\u7b2c\uff12\u5f15\u6570\u3067\u3069\u306e\u6587\u5b57\u306b\u7f6e\u63db\u3059\u308b\u304b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br>replaceAll\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u5c11\u306a\u3044\u30b3\u30fc\u30c9\u3067\u5168\u3066\u306e\u5bfe\u8c61\u306e\u6587\u5b57\u3092\u7f6e\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3010\u7df4\u7fd2\u3011<\/p>\n\n\n\n<p>\u4e0b\u306e\u67a0\u306e\u6587\u5b57\u5217\u300capple,orange,peach,apple,banana\u300d\u306eapple\u3092\u3001\u308a\u3093\u3054\u306b\u7f6e\u63db\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\u203b\u7d9a\u3051\u3066\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<iframe loading=\"lazy\" src=\"https:\/\/paiza.io\/projects\/e\/OQ_gmipaP-uo813FHcniXw?theme=twilight\" width=\"100%\" height=\"500\"><\/iframe>\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 str = &quot;apple,orange,peach,apple,banana&quot;;\nconst result = str.replaceAll(&quot;apple&quot;, &quot;\u308a\u3093\u3054&quot;);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\u308a\u3093\u3054,orange,peach,\u308a\u3093\u3054,banana<\/code><\/pre><\/div>\n\n\n\n<p>\u5148\u307b\u3069\u3088\u308a\u3082\u304b\u306a\u308a\u3059\u3063\u304d\u308a\u3068\u3057\u305f\u3001\u898b\u3084\u3059\u3044\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3057\u305f\u306d\u3002<br>\u7f6e\u63db\u3059\u308b\u6587\u5b57\u306e\u7a2e\u985e\u3084\u30d1\u30bf\u30fc\u30f3\u304c\uff11\u901a\u308a\u306e\u307f\u306e\u5834\u5408\u306f\u3001\u3053\u306e\u3088\u3046\u306b replaceAll\u30e1\u30bd\u30c3\u30c9\u3067\u5bfe\u5fdc\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u3001replaceAll\u30e1\u30bd\u30c3\u30c9\u306f\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u30e1\u30bd\u30c3\u30c9\u306e\u305f\u3081\u3001\u53e4\u3044\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<br>\u4f7f\u7528\u74b0\u5883\u306b\u3088\u3063\u3066\u306f\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u8907\u6570\u306e\u7a2e\u985e\u3084\u30d1\u30bf\u30fc\u30f3\u306e\u6587\u5b57\u3092\u4e00\u5ea6\u306b\u7f6e\u63db\u3057\u305f\u3044\u30b1\u30fc\u30b9\u306b\u306f\u5bfe\u5fdc\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u305d\u306e\u5834\u5408\u306f\u5f8c\u8ff0\u3059\u308b\u6b63\u898f\u8868\u73fe\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u6d3b\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">\u6b63\u898f\u8868\u73fe\u3092\u5229\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b<\/h2>\n\n\n\n<p>replace\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6b63\u898f\u8868\u73fe\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u3088\u308a\u8907\u96d1\u306a\u6761\u4ef6\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u307e\u3067\u89e3\u8aac\u3057\u305f replace\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3067\u306f\u3001a\u3092\u6307\u5b9a\u3059\u308c\u3070 a \u306e\u307f\u3001Hello\u3092\u6307\u5b9a\u3059\u308c\u3070 Hello \u306e\u307f\u3068\u3044\u3063\u305f\u3088\u3046\u306b\u3001\u6c7a\u307e\u3063\u305f\u5358\u4e00\u306e\u6587\u5b57\u3084\uff11\u30d1\u30bf\u30fc\u30f3\u306e\u6587\u5b57\u5217\u3057\u304b\u7f6e\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<br>\u7f6e\u63db\u5f8c\u306e\u6587\u5b57\u306b\u95a2\u3057\u3066\u3082\u540c\u69d8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3001\u6b63\u898f\u8868\u73fe\u3092\u6d3b\u7528\u3059\u308b\u3068\u3001\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u306b\u8a72\u5f53\u3059\u308b\u3082\u306e\u5168\u3066\u3092\u7f6e\u63db\u3057\u305f\u308a\u3001\u6570\u5b573\u3064\u304c\u9023\u7d9a\u3057\u3066\u4e26\u3076\u7b87\u6240\u306e\u307f\u3092\u7f6e\u63db\u3057\u305f\u308a\u3068\u3044\u3063\u305f\u3088\u3046\u306b\u3001\u7f6e\u63db\u3059\u308b\u6587\u5b57\u5217\u306e\u6761\u4ef6\u3092\u67d4\u8edf\u306b\u6c7a\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6216\u3044\u306f\u3001\u5192\u982d\u306e\u65e5\u4ed8\u306e\u8868\u8a18\u5909\u66f4\u306e\u4f8b\u3067\u3082\u51fa\u3057\u305f \u300c2020\/08\/20 \u2192 2020\u5e748\u670820\u65e5\u300d \u3068\u3044\u3063\u305f\u30b1\u30fc\u30b9\u306e\u3088\u3046\u306b\u3001\u7f6e\u63db\u5f8c\u306e\u6587\u5b57\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u8907\u6570\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001\u6b63\u898f\u8868\u73fe\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_1\" class=\"wp-block-heading\">\u6b63\u898f\u8868\u73fe\u306b\u4e00\u81f4\u3059\u308b\u4efb\u610f\u306e\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b<\/h3>\n\n\n\n<p>JavaScriptde\u3067\u6b63\u898f\u8868\u73fe\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b \/ (\u30b9\u30e9\u30c3\u30b7\u30e5) \u3067\u56f2\u3044\u3001\u305d\u306e\u4e2d\u306b\u6307\u5b9a\u3059\u308b\u6761\u4ef6\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6761\u4ef6\u306e\u6307\u5b9a\u306f\u3001\u6587\u5b57\u30af\u30e9\u30b9\u3084\u6570\u91cf\u5b50\u3001 \u30a2\u30b5\u30fc\u30b7\u30e7\u30f3 (\u4f4d\u7f6e\u6307\u5b9a) \u3068\u3044\u3063\u305f\u69d8\u3005\u306a\u30e1\u30bf\u6587\u5b57\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30bf\u6587\u5b57\u306e\u7a2e\u985e\u306f\u591a\u5c90\u306b\u6e21\u308b\u305f\u3081\u3001\u4eca\u56de\u306f\u305d\u306e\u4e2d\u304b\u3089\u4f7f\u7528\u983b\u5ea6\u306e\u9ad8\u3044\u4ee3\u8868\u7684\u306a\u3082\u306e\u3092\u629c\u7c8b\u3057\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<style>\n    table.referrence {\n        border: 2px solid rgb(140 140 140);\n        border-collapse: collapse;\n        table-layout: auto;\n        width: 100%\n    }\n\n    th {\n        background-color: #B8CCE4 !important;\n        color: #000 !important;\n        text-align: center !important;\n    }\n\n    th,\n    td {\n        border: 1px solid rgb(160 160 160) !important;\n        padding: 1%;\n        background: #FFF\n    }\n\n    td:nth-last-child(n+2) {\n        text-align: center;\n    }\n<\/style>\n<table class=\"referrence\">\n  <thead>\n    <tr>\n      <th>\u30e1\u30bf\u6587\u5b57<\/th>\n      <th>\u8aac\u660e<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr><td>*<\/td><td>\u76f4\u524d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\uff10\u56de\u4ee5\u4e0a\u306e\u7e70\u308a\u8fd4\u3057<\/td><\/tr>\n    <tr><td>+<\/td><td>\u76f4\u524d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\uff11\u56de\u4ee5\u4e0a\u306e\u7e70\u308a\u8fd4\u3057<\/td><\/tr>\n    <tr><td>?<\/td><td>\u76f4\u524d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\uff10\u56de\u304b\uff11\u56de\u306e\u7e70\u308a\u8fd4\u3057<\/td><\/tr>\n    <tr><td>{n}<\/td><td>\u76f4\u524d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\uff4e\u56de\u306e\u7e70\u308a\u8fd4\u3057<\/td><\/tr>\n    <tr><td>{n,}<\/td><td>\u76f4\u524d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\uff4e\u56de\u4ee5\u4e0a\u306e\u7e70\u308a\u8fd4\u3057<\/td><\/tr>\n    <tr><td>{n,m}<\/td><td>\u76f4\u524d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\uff4e~m\u56de\u306e\u7e70\u308a\u8fd4\u3057<\/td><\/tr>\n    <tr><td>.<\/td><td>\u6539\u884c\u6587\u5b57\u3092\u9664\u304f1\u6587\u5b57<\/td><\/tr>\n    <tr><td>[]<\/td><td>[] \u5185\u306e\u3044\u305a\u308c\u304b\uff11\u6587\u5b57<\/td><\/tr>\n    <tr><td>[^]<\/td><td>[] \u5185\u306e\u6587\u5b57\u306b\u8a72\u5f53\u3057\u306a\u3044 \u3044\u305a\u308c\u304b\u306e\uff11\u6587\u5b57<\/td><\/tr>\n    <tr><td>\\d<\/td><td>\u3044\u305a\u308c\u304b\u306e\u6570\u5b57\u306b\u8a72\u5f53<\/td><\/tr>\n    <tr><td>\\n<\/td><td>\u6539\u884c\u6587\u5b57\u306b\u8a72\u5f53<\/td><\/tr>\n    <tr><td>\\s<\/td><td>\u7a7a\u767d\u6587\u5b57\u306b\u8a72\u5f53<\/td><\/tr>\n    <tr><td>^<\/td><td>\u6587\u5b57\u5217\u306e\u5148\u982d<\/td><\/tr>\n    <tr><td>$<\/td><td>\u6587\u5b57\u5217\u306e\u672b\u5c3e<\/td><\/tr>\n  <\/tbody>\n<\/table>\n\n\n\n<p>replace\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c1\u5f15\u6570\u306b\u6b63\u898f\u8868\u73fe\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001\u7f6e\u63db\u3059\u308b\u6587\u5b57\u306e\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\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\u6587\u5b57\u5217.replace(\u6b63\u898f\u8868\u73fe, \u7f6e\u63db\u5f8c\u306e\u6587\u5b57)<\/code><\/pre><\/div>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3001\u5b9f\u969b\u306e\u52d5\u304d\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\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 str = &quot;012-3abc4-567&quot;;\nconst result = str.replace(\/[a-z]+\/, &quot;***&quot;);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>012-3***4-567<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306b\u304a\u3051\u308b\u6b63\u898f\u8868\u73fe\u306f\u3001\u300c\/[a-z]+\/\u300d \u306e\u90e8\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<p>[] \u306f\u305d\u306e\u4e2d\u306e\u3044\u305a\u308c\u304b\uff11\u6587\u5b57\u3092\u6307\u3057\u3001a-z \u3068\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u5c0f\u6587\u5b57\u306e\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u5168\u822c\u3092\u6307\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\uff0b\u306f\u76f4\u524d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\uff11\u56de\u4ee5\u4e0a\u306e\u7e70\u308a\u8fd4\u3057\u3092\u8868\u3059\u305f\u3081\u3001\u3053\u306e\u5834\u5408\u306f\u5c0f\u6587\u5b57\u306e\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u304c\uff11\u3064\u4ee5\u4e0a\u9023\u306a\u308b\u6587\u5b57\u5217\u304c\u7f6e\u63db\u5bfe\u8c61\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u884c\u7d50\u679c\u3092\u898b\u308b\u3068\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b \u300cabc\u300d \u306e\u90e8\u5206\u304c\u6307\u5b9a\u306e\u6587\u5b57\u5217\u306b\u7f6e\u304d\u63db\u308f\u3063\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u306d\u3002<br>\u3053\u308c\u304c\u3001\u6b63\u898f\u8868\u73fe\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_2\" class=\"wp-block-heading\">\u6b63\u898f\u8868\u73fe\u306b\u4e00\u81f4\u3059\u308b\u4efb\u610f\u306e\u6587\u5b57\u5217\u3092\u5168\u3066\u7f6e\u63db\u3059\u308b<\/h3>\n\n\n\n<p>\u5148\u307b\u3069\u306e\u8868\u8a18\u3060\u3051\u3067\u306f\u3001\u6700\u521d\u306b\u4e00\u81f4\u3057\u305f\u6587\u5b57\u3057\u304b\u7f6e\u63db\u3055\u308c\u305a\u3001\u5168\u3066\u3092\u4e00\u5ea6\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001\u6b63\u898f\u8868\u73fe\u306e\u6307\u5b9a\u6642\u306b\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u30d5\u30e9\u30b0\u3068\u547c\u3070\u308c\u308b\u6a5f\u80fd\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br>\u3053\u308c\u306b\u3088\u308a\u3001\u6587\u5b57\u5217\u5185\u306b\u3042\u308b\u5168\u3066\u306e\u5bfe\u8c61\u306e\u6587\u5b57\u3092\u7f6e\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30b0\u30ed\u30fc\u30d0\u30eb\u30d5\u30e9\u30b0\u306f\u3001\u6b63\u898f\u8868\u73fe\u30d1\u30bf\u30fc\u30f3\u672b\u5c3e\u306e\u30b9\u30e9\u30c3\u30b7\u30e5\u306e\u5f8c\u308d\u306b \u300cg\u300d \u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u8a2d\u5b9a\u53ef\u80fd\u3067\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>\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 str = &quot;123ab456cd789&quot;;\nconst result = str.replace(\/[a-z]+\/g, &quot;-&quot;);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>123-456-789<\/code><\/pre><\/div>\n\n\n\n<p>\u30b0\u30ed\u30fc\u30d0\u30eb\u30d5\u30e9\u30b0\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u5168\u3066\u306e\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u3059\u308b\u74b0\u5883\u3084\u7f6e\u63db\u3057\u305f\u3044\u6587\u5b57\u5217\u306e\u5185\u5bb9\u306b\u3088\u308areplaceAll\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u7f6e\u304d\u63db\u3048\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u306b\u306f\u3001\u3053\u306e\u65b9\u6cd5\u3092\u6d3b\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_3\" class=\"wp-block-heading\">\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\uff08$1, $2, \u2026\uff09\u3067\u7f6e\u63db\u3057\u306a\u3044\u6587\u5b57\u5217\u3092\u6307\u5b9a\u3059\u308b<\/h3>\n\n\n\n<p>\u5148\u307b\u3069\u307e\u3067\u306f\u3001\u7f6e\u63db\u3059\u308b\u6587\u5b57\u5217\u3092\u6b63\u898f\u8868\u73fe\u3067\u6307\u5b9a\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u3068\u3044\u3046\u6a5f\u80fd\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u53cd\u5bfe\u306b\u7f6e\u63db\u3057\u306a\u3044\u6587\u5b57\u5217\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u3068\u306f\u3001()\u3067\u56f2\u3093\u3060\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u6587\u5b57\u5217\u3092\u3001\uff11\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u6a5f\u80fd\u3067\u3059\u3002<br>\u53d6\u5f97\u3057\u305f\u6587\u5b57\u5217\u306f\u3001\u5404\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b \u300c$1\u300d\u300c$2\u300d \u3068\u3044\u3063\u305f\u5f62\u5f0f\u3067\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u3053\u308c\u306b\u3088\u308a\u7f6e\u63db\u3059\u308b\u6587\u5b57\u5217\u3068\u305d\u3046\u3067\u306a\u3044\u6587\u5b57\u5217\u3092\u6b63\u898f\u8868\u73fe\u3092\u4f7f\u7528\u3057\u3066\u632f\u308a\u5206\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6587\u7ae0\u306e\u307f\u3067\u306f\u60f3\u50cf\u304c\u4ed8\u304d\u3065\u3089\u3044\u304b\u3068\u601d\u3046\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u306a\u304c\u3089\u5b9f\u969b\u306e\u4f7f\u3044\u65b9\u3092\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\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 str = &quot;2025-08-20&quot;;\nconst result = str.replace(\/(\\d+)-0?(\\d+)-0?(\\d+)\/, &quot;$1\u5e74$2\u6708$3\u65e5&quot;);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>2025\u5e748\u670820\u65e5<\/code><\/pre><\/div>\n\n\n\n<p>\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306e\u3046\u3061\u3001(\\d+) \u3068\u8a18\u8ff0\u3055\u308c\u305f\u90e8\u5206\u304c\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u3067\u3059\u3002<br>\u3053\u306e\u5834\u5408\u306f\u3001$1\u306b \u300c2025\u300d\u3001$2\u306b \u300c8\u300d\u3001$3\u306b \u300c20\u300d \u304c\u305d\u308c\u305e\u308c\u5165\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u3092\u4f7f\u7528\u3059\u308b\u6700\u5927\u306e\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u7f6e\u63db\u5f8c\u306e\u6587\u5b57\u5217\u3092\u67d4\u8edf\u306b\u6307\u5b9a\u3067\u304d\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002<br>\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u306b\u3088\u3063\u3066\u53d6\u5f97\u3057\u305f\u6587\u5b57\u306f\u305d\u306e\u307e\u307e\u7b2c\uff12\u5f15\u6570\u3067\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u6587\u5b57\u5217\u306f\u305d\u306e\u307e\u307e\u306b\u3001\u7f6e\u63db\u5f8c\u306e\u6587\u5b57\u5217\u5168\u4f53\u306e\u5f62\u5f0f\u3092\u81ea\u5728\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u6b63\u898f\u8868\u73fe\u306e\u307f\u3067\u6761\u4ef6\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u6570\u5024\u3054\u3068\u306e\u9593\u306b\u631f\u307e\u308b \u300c-\u300d \u3092\u5225\u306e\u6587\u5b57\u306b\u7f6e\u63db\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306b \u300c\u3007\u3007\u5e74\u3007\u3007\u6708\u3007\u3007\u65e5\u300d \u3068\u3044\u3063\u305f\u305d\u308c\u305e\u308c\u5225\u306e\u6587\u5b57\u306b\u4e00\u5ea6\u306b\u7f6e\u63db\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u6a5f\u80fd\u3068\u5408\u308f\u305b\u305f\u4f7f\u7528\u65b9\u6cd5\u3067\u3042\u308c\u3070\u3001\u4e0a\u8ff0\u3057\u305f\u7570\u306a\u308b\u6587\u5b57\u3078\u306e\u540c\u6642\u7f6e\u63db\u3060\u3051\u3067\u306a\u304f\u3001\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u914d\u7f6e\u306e\u7f6e\u304d\u63db\u3048\u306a\u3069\u3082\u7c21\u5358\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3010\u7df4\u7fd2\u3011<\/p>\n\n\n\n<p>\u4e0b\u306e\u67a0\u306e\u6587\u5b57\u5217\u300cTaro Yamada, Jiro Tanaka\u300d\u306e\u82d7\u5b57\u3092\u63db\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\u203b\u7d9a\u3051\u3066\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<iframe loading=\"lazy\" src=\"https:\/\/paiza.io\/projects\/e\/DitrQZxqeluulzJhZWhxmw?theme=twilight\" width=\"100%\" height=\"500\"><\/iframe>\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 sampleString = &quot;Taro Yamada, Jiro Tanaka&quot;;\nconst result = sampleString.replace(\/(\\w+)\\s(\\w+),\\s(\\w+)\\s(\\w+)?\/, &quot;$1 $4, $3 $2&quot;);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>Taro Tanaka, Jiro Yamada<\/code><\/pre><\/div>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">replace\u30e1\u30bd\u30c3\u30c9\u306e\u6d3b\u7528\u4f8b<\/h2>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001\u5b9f\u969b\u306e\u958b\u767a\u3067\u3088\u304f\u3042\u308b replace\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u4f8b\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br>\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_1\" class=\"wp-block-heading\">\u6539\u884c\u6587\u5b57\u3092HTML\u306e\u6539\u884c\u30bf\u30b0\u306b\u7f6e\u63db\u3059\u308b<\/h3>\n\n\n\n<p>\u307e\u305a\u306f\u3001\u6539\u884c\u6587\u5b57\u3092&lt;br&gt;\u30bf\u30b0\u306b\u7f6e\u63db\u3059\u308b\u4f8b\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002<br>\u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u6539\u884c\u6587\u5b57\u3092\u3001\u6b63\u898f\u8868\u73fe\u3092\u4f7f\u7528\u3057\u3066HTML\u306e<br>\u30bf\u30b0\u306b\u7f6e\u63db\u3059\u308b\u30b1\u30fc\u30b9\u3067\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>\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 str = &quot;\u3053\u308c\u306f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002\\n\u6539\u884c\u6587\u5b57\u3092\u7f6e\u63db\u3057\u307e\u3059\u3002&quot;;\nconst result = str.replace(\/(\\r\\n|\\n|\\r)\/g, &quot;&lt;br&gt;&quot;);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\u3053\u308c\u306f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002&lt;br&gt;\u6539\u884c\u6587\u5b57\u3092\u7f6e\u63db\u3057\u307e\u3059\u3002<\/code><\/pre><\/div>\n\n\n\n<p>\u6539\u884c\u30b3\u30fc\u30c9\u306fOS\u306b\u3088\u308a\u3001\u300c\\r\\n\u300d\u3001\u300c\\n\u300d\u3001\u300c\\r\u300d \u306e\u3046\u3061\u3044\u305a\u308c\u304b\u3068\u306a\u308b\u305f\u3081\u3001\u300c(\\r\\n|\\n|\\r)\u300d \u3068\u8868\u8a18\u3059\u308b\u3053\u3068\u3067\u5bfe\u5fdc\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_2\" class=\"wp-block-heading\">\u6587\u5b57\u5217\u5185\u306e\u4e0d\u8981\u306a\u7a7a\u767d\u3092\u524a\u9664\u3059\u308b<\/h3>\n\n\n\n<p>\u6b21\u306b\u3001\u6587\u5b57\u5217\u306e\u4e2d\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u30b9\u30da\u30fc\u30b9 (\u7a7a\u767d\u6587\u5b57) \u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6587\u5b57\u5217\u5185\u306e\u4e0d\u8981\u306a\u30b9\u30da\u30fc\u30b9\u3092\u7121\u304f\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u7a7a\u767d\u6587\u5b57\u3092\u7a7a\u6587\u5b57\u306b\u7f6e\u63db\u3057\u3066\u524a\u9664\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 str = &quot;abc  def\u3000 hij&quot;;\nconst result = str.replace(\/\\s+\/g, &quot;&quot;);\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>abcdefhij<\/code><\/pre><\/div>\n\n\n\n<p>\u6b63\u898f\u8868\u73fe\u3067\u7a7a\u767d\u6587\u5b57\u3092\u8868\u3059\u969b\u306f\u3001\u300c\\s\u300d \u3068\u8a18\u8ff0\u3057\u307e\u3059\u3002<br>\u7a7a\u767d\u6587\u5b57\u306e\u5bfe\u8c61\u306b\u306f\u3001\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3084\u5168\u89d2\u30b9\u30da\u30fc\u30b9\u3060\u3051\u3067\u306a\u304f\u3001\u30bf\u30d6\u306a\u3069\u3082\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_3\" class=\"wp-block-heading\">\u6570\u5024\u306b\u4e00\u5b9a\u9593\u9694\u3067\u30ab\u30f3\u30de\u3092\u633f\u5165\u3059\u308b<\/h3>\n\n\n\n<p>\u6b21\u306b\u3001\u6570\u5024\u306b\u4e00\u5b9a\u9593\u9694\u3067\u30ab\u30f3\u30de\u3092\u4ed8\u4e0e\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002<br>\u3088\u304f\u3042\u308b\u30b1\u30fc\u30b9\u3068\u3057\u3066\u30013\u6841\u533a\u5207\u308a\u3067\u30ab\u30f3\u30de\u3092\u4ed8\u4e0e\u3057\u305f\u3044\u5834\u5408\u306a\u3069\u306b\u6d3b\u7528\u3067\u304d\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30ab\u30f3\u30de\u533a\u5207\u308a\u3092\u884c\u3046\u969b\u306f\u3001\u6b63\u898f\u8868\u73fe\u3068\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u7f6e\u63db\u3092\u884c\u3044\u307e\u3059\u3002<br>\u307e\u305a\u306f\u3001\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>\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>let str = &#39;123456789&#39;;\nlet result = str.replace(\/^(\\d+)(\\d{3})\/,&quot;$1,$2&quot;);\n    \nwhile (str !== result) {\n    str = result;\n    result = result.replace(\/^(\\d+)(\\d{3})\/,&quot;$1,$2&quot;);\n}\n\nconsole.log(result);<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>123,456,789<\/code><\/pre><\/div>\n\n\n\n<p>\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u300c^(\\d+)(\\d{3})\u300d \u306e\u8a18\u8ff0\u3067\u3001\u5bfe\u8c61\u306e\u6587\u5b57\u5217\u3092\u4e0b\uff13\u6841\u3068\u305d\u308c\u4ee5\u4e0a\u306e\u6841\u306e\uff12\u30b0\u30eb\u30fc\u30d7\u306b\u5206\u3051\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30b0\u30eb\u30fc\u30d7\u540c\u58eb\u306e\u9593\u306b\u30ab\u30f3\u30de\u3092\u6253\u3064\u3053\u3068\u3067\u3001\u533a\u5207\u3089\u308c\u305f\u4e0b\uff13\u6841\u306f\u6b63\u898f\u8868\u73fe\u3067\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u306e\u5bfe\u8c61\u5916\u3068\u306a\u308b\u305f\u3081\u3001\u3053\u308c\u3092\u7e70\u308a\u8fd4\u3057\u3066\u6b8b\u308a\u306e\u6841\u3082\uff13\u6841\u3054\u3068\u306b\u533a\u5207\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6700\u7d42\u7684\u306b\u3001\uff13\u6841\u3054\u3068\u306e\u533a\u5207\u308a\u304c\u3067\u304d\u306a\u304f\u306a\u3063\u305f\u6642\u70b9\u3067 while\u6587\u306e\u7d42\u4e86\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u308b\u305f\u3081\u3001\u30eb\u30fc\u30d7\u3092\u629c\u3051\u3066\u51e6\u7406\u304c\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u306a\u304a\u3001\u7570\u306a\u308b\u6841\u6570\u3067\u30ab\u30f3\u30de\u533a\u5207\u308a\u3092\u884c\u3044\u305f\u3044\u5834\u5408\u306f\u3001{}\u5185\u306e\u6570\u5024\u3092\u5909\u66f4\u3059\u308c\u3070 OK\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_4\" class=\"wp-block-heading\">replace\u306e\u5f15\u6570\u306b\u95a2\u6570\u3092\u6307\u5b9a\u3059\u308b<\/h3>\n\n\n\n<p>replace\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c2\u5f15\u6570\u306b\u306f\u3001\u6587\u5b57\u5217\u306e\u4ed6\u306b\u95a2\u6570\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u6587\u5b57\u5217\u3092\u53d6\u5f97\u3057\u305f\u5f8c\u3001\u6307\u5b9a\u3057\u305f\u95a2\u6570\u306b\u6e21\u3057\u3066\u51e6\u7406\u3092\u884c\u3046\u3068\u3044\u3063\u305f\u3088\u3046\u306a\u3001\u3088\u308a\u8907\u96d1\u306a\u51e6\u7406\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3001\u5b9f\u969b\u306e\u52d5\u304d\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\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 str = &#39;THIS IS SAMPLE&#39;;\nconst result = str.replace(\/[A-Z]\/g, toLowerStr);\n\nconsole.log(result)\n\nfunction toLowerStr(str) {\n    return str.toLowerCase();\n}<\/code><\/pre><\/div>\n\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>this is sample<\/code><\/pre><\/div>\n\n\n\n<p>\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001\u5927\u6587\u5b57\u306e\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u3092\u5168\u3066\u53d6\u5f97\u3057\u3001\u305d\u308c\u3089\u3092\u95a2\u6570\u5185\u306e\u51e6\u7406\u3067\u5c0f\u6587\u5b57\u306b\u5909\u63db\u3057\u3066\u304b\u3089\u8fd4\u5374\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6587\u5b57\u5217\u3060\u3051\u3067\u306f\u6307\u5b9a\u304c\u96e3\u3057\u3044\u5185\u5bb9\u3082\u3001\u95a2\u6570\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u67d4\u8edf\u306a\u51e6\u7406\u304c\u53ef\u80fd\u3068\u306a\u308b\u305f\u3081\u3001\u305c\u3072\u6d3b\u7528\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u3044\u304b\u304c\u3067\u3057\u305f\u304b\uff1f\u4eca\u56de\u306f\u3001replace\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3092\u884c\u3044\u307e\u3057\u305f\u3002<br>\u30e1\u30bd\u30c3\u30c9\u5358\u4f53\u3060\u3051\u3067\u306a\u304f\u3001\u6b63\u898f\u8868\u73fe\u3068\u3082\u4e0a\u624b\u304f\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u4e0a\u624b\u306b\u4f7f\u3044\u3053\u306a\u3057\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\" loading=\"lazy\">\n\n\n<p>IT\u30b9\u30ad\u30eb\u9700\u8981\u306e\u9ad8\u307e\u308a\u3068\u3068\u3082\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3082\u5897\u3048\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u3069\u306e\u30b9\u30af\u30fc\u30eb\u306b\u901a\u3046\u3079\u304d\u304b\u8ff7\u3063\u3066\u3057\u307e\u3046\u4eba\u3082\u3044\u308b\u3067\u3057\u3087\u3046\u3002\u305d\u3093\u306a\u65b9\u306b\u306f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\uff01\u3053\u308c\u307e\u3067\u591a\u304f\u306eIT\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u80b2\u6210\u30fb\u8f29\u51fa\u3057\u3066\u304d\u305f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3067\u3082\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3092\u958b\u8b1b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"bgBox\">\n<p><strong>\uff1c\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306e\u7279\u5fb4\uff1e<\/strong><br \/><strong>\u30fb\u305f\u3057\u304b\u306a\u80b2\u6210\u5b9f\u7e3e\u3068\u89aa\u8eab\u306a\u6559\u80b2\u3000\uff5e\u30bb\u30ab\u30f3\u30c9\u30ad\u30e3\u30ea\u30a2\u3092\u5168\u529b\u652f\u63f4\uff5e<\/strong><br \/><strong>\u30fb\u8b1b\u5e2b\u304c\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u3000\uff5e\u201c\u672c\u5f53\u201d\u306e\u958b\u767a\u30ce\u30a6\u30cf\u30a6\u3092\u76f4\u306b\u5b66\u3079\u308b\uff5e<\/strong><br \/><strong>\u30fb\u5c02\u5c5e\u8b1b\u5e2b\u304c\u5b66\u7fd2\u3092\u5fb9\u5e95\u30b5\u30dd\u30fc\u30c8\u3000\uff5e\u300c\u308f\u304b\u3089\u306a\u3044\u300d\u3092\u5fb9\u5e95\u89e3\u6c7a\uff5e<\/strong><br \/><strong>\u30fb\u5b9f\u52d9\u30d9\u30fc\u30b9\u3067\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3000\uff5e\u5b9f\u8df5\u7684\u306a\u51dd\u7e2e\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0\uff5e<\/strong><\/p>\n<\/div>\n<p>\u3053\u306e\u3088\u3046\u306a\u7279\u5fb4\u3092\u6301\u3064\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306fIT\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b9\u30bf\u30fc\u30c8\u30e9\u30a4\u30f3\u3068\u3057\u3066\u6700\u9069\u3067\u3059\u3002<br \/>\u8a71\u3092\u805e\u304d\u305f\u3044\u30fb\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u3068\u3044\u3046\u65b9\u306f<a href=\"https:\/\/techmania.jp\/lp\/2\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u304b\u3089\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>","protected":false},"excerpt":{"rendered":"\u6587\u5b57\u5217\u3092\u6271\u3046\u969b\u306b\u3001\u7279\u5b9a\u306e\u6587\u5b57\u5217\u3092\u5225\u306e\u6587\u5b57\u5217\u306b\u7f6e\u304d\u63db\u3048\u308b\u64cd\u4f5c\u3092\u3059\u308b\u3053\u3068\u306f\u3088\u304f\u3042\u308a\u307e\u3059\u3088\u306d\u3002\u3067\u3059\u304c\u3001\u30c6\u30ad\u30b9\u30c8\u30a8\u30c7\u30a3\u30bf\u30671\u30641\u3064\u691c\u7d22\u3057\u3066\u66f8\u304d\u63db\u3048\u308b\u306e\u306f\u52b9\u7387\u7684\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u307e\u3068\u3081\u3066\u7f6e\u304d\u63db\u3048\u305f\u3044\u3068\u3044\u3046\u3053\u3068\u304c\u591a\u3005\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u3002 \u305d\u306e\u969b\u306b\u6d3b\u7528\u3067\u304d\u308b\u306e\u304c\u3001replace\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002 \u4eca\u56de\u306f\u3001replace\u30e1\u30bd\u30c3\u30c9\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u3001\u5b9f\u8df5\u7684\u306a\u5185\u5bb9\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002 JavaScript\u306er [&hellip;]","protected":false},"author":11,"featured_media":9810,"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-replace.webp","fifu_image_alt":"\u3010JavaScript\u5165\u9580\u3011replace()\u30e1\u30bd\u30c3\u30c9\u3067\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b","footnotes":""},"categories":[15],"tags":[],"class_list":["post-9808","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\/9808","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=9808"}],"version-history":[{"count":7,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/9808\/revisions"}],"predecessor-version":[{"id":10097,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/9808\/revisions\/10097"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/media\/9810"}],"wp:attachment":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/media?parent=9808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/categories?post=9808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/tags?post=9808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}