{"id":155,"date":"2026-09-19T07:45:08","date_gmt":"2026-09-18T22:45:08","guid":{"rendered":"https:\/\/motoki-design.co.jp\/tools\/html-escape\/"},"modified":"2026-09-19T07:45:08","modified_gmt":"2026-09-18T22:45:08","slug":"html-escape","status":"publish","type":"page","link":"https:\/\/motoki-design.co.jp\/tools\/html-escape\/","title":{"rendered":"HTML\u7279\u6b8a\u6587\u5b57\u5909\u63db\u30c4\u30fc\u30eb"},"content":{"rendered":"\n<div id=\"wt-htmlesc\" class=\"wt-tool\">\n\t<p class=\"wt-lead\">HTML\u3084\u30b3\u30fc\u30c9\u3092\u305d\u306e\u307e\u307e\u30da\u30fc\u30b8\u306b\u8f09\u305b\u308b\u3068\u3001<strong>\u30bf\u30b0\u3068\u3057\u3066\u89e3\u91c8\u3055\u308c\u3066\u8868\u793a\u304c\u5d29\u308c\u307e\u3059<\/strong>\u3002\u7279\u6b8a\u6587\u5b57\u3092\u5b9f\u4f53\u53c2\u7167\u306b\u5909\u63db\u3057\u3066\u304a\u3051\u3070\u3001\u66f8\u3044\u305f\u3068\u304a\u308a\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u30d6\u30ed\u30b0\u3067\u30b3\u30fc\u30c9\u3092\u7d39\u4ecb\u3059\u308b\u3068\u304d\u306b\u3069\u3046\u305e\u3002\u9006\u65b9\u5411\uff08\u5143\u306b\u623b\u3059\uff09\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\t<div class=\"wt-policy\" style=\"border-color:#cfe3cf;background:#f3faf3;margin-top:0\">\n\t\t<p class=\"wt-policy-title\">\ud83d\udd12 \u3053\u306e\u51e6\u7406\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u4e2d\u3060\u3051\u3067\u5b8c\u7d50\u3057\u307e\u3059<\/p>\n\t\t<ul><li>\u5165\u529b\u3057\u305f\u5185\u5bb9\u306f<strong>\u30b5\u30fc\u30d0\u30fc\u306b\u4e00\u5207\u9001\u4fe1\u3055\u308c\u307e\u305b\u3093<\/strong>\u3002\u672a\u516c\u958b\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3067\u3082\u5b89\u5fc3\u3057\u3066\u304a\u4f7f\u3044\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/li><\/ul>\n\t<\/div>\n\n\t<form class=\"wt-form\" style=\"margin-top:1.2em\" onsubmit=\"return false\">\n\t\t<div class=\"wt-field\">\n\t\t\t<label for=\"wt-he-in\">\u5909\u63db\u3057\u305f\u3044\u30c6\u30ad\u30b9\u30c8<\/label>\n\t\t\t<textarea id=\"wt-he-in\" class=\"wt-input\" rows=\"8\" spellcheck=\"false\" placeholder=\"&lt;a href=&quot;https:\/\/example.co.jp\/&quot;&gt;\u30b5\u30f3\u30d7\u30eb &amp; \u30c6\u30b9\u30c8&lt;\/a&gt;\"><\/textarea>\n\t\t<\/div>\n\t\t<div class=\"wt-fields\">\n\t\t\t<div class=\"wt-field\">\n\t\t\t\t<label for=\"wt-he-mode\">\u5909\u63db\u306e\u5411\u304d<\/label>\n\t\t\t\t<select id=\"wt-he-mode\" class=\"wt-select\" style=\"width:100%\">\n\t\t\t\t\t<option value=\"escape\">\u7279\u6b8a\u6587\u5b57\u306b\u5909\u63db\uff08\u30a8\u30b9\u30b1\u30fc\u30d7\uff09<\/option>\n\t\t\t\t\t<option value=\"unescape\">\u5143\u306e\u6587\u5b57\u306b\u623b\u3059\uff08\u30a2\u30f3\u30a8\u30b9\u30b1\u30fc\u30d7\uff09<\/option>\n\t\t\t\t<\/select>\n\t\t\t<\/div>\n\t\t\t<div class=\"wt-field\">\n\t\t\t\t<label><input type=\"checkbox\" id=\"wt-he-quote\" checked> \u5f15\u7528\u7b26\u3082\u5909\u63db\u3059\u308b<\/label>\n\t\t\t<\/div>\n\t\t\t<div class=\"wt-field\">\n\t\t\t\t<label><input type=\"checkbox\" id=\"wt-he-nbsp\"> \u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3092 &amp;nbsp; \u306b\u3059\u308b<\/label>\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/form>\n\n\t<div class=\"wt-result\" hidden><\/div>\n\n\t<div class=\"wt-disclaimer\">\n\t\t<strong>\u5909\u63db\u3059\u308b\u6587\u5b57<\/strong><br>\n\t\t<code>&amp;<\/code> \u2192 <code>&amp;amp;<\/code>\u3001<code>&lt;<\/code> \u2192 <code>&amp;lt;<\/code>\u3001<code>&gt;<\/code> \u2192 <code>&amp;gt;<\/code> \u304c\u57fa\u672c\u3067\u3059\u3002\u5c5e\u6027\u5024\u306e\u4e2d\u306b\u5165\u308c\u308b\u5834\u5408\u306f <code>&quot;<\/code> \u2192 <code>&amp;quot;<\/code> \u3068 <code>'<\/code> \u2192 <code>&amp;#39;<\/code> \u3082\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<strong>\u5909\u63db\u306e\u9806\u756a\u304c\u91cd\u8981<\/strong>\u3067\u3001<code>&amp;<\/code> \u3092\u6700\u521d\u306b\u51e6\u7406\u3057\u306a\u3044\u3068\u4e8c\u91cd\u5909\u63db\u306b\u306a\u308a\u307e\u3059\uff08\u3053\u306e\u30c4\u30fc\u30eb\u3067\u306f\u6b63\u3057\u3044\u9806\u5e8f\u3067\u51e6\u7406\u3057\u3066\u3044\u307e\u3059\uff09\u3002\n\t<\/div>\n\n\t<div class=\"wt-faq\">\n\t\t<details>\n\t\t\t<summary>WordPress\u3067\u30b3\u30fc\u30c9\u3092\u8f09\u305b\u308b\u3068\u304d\u306e\u30b3\u30c4\u306f\uff1f<\/summary>\n\t\t\t<p>\u30d6\u30ed\u30c3\u30af\u30a8\u30c7\u30a3\u30bf\u306e<strong>\u300c\u30b3\u30fc\u30c9\u300d\u30d6\u30ed\u30c3\u30af\u3092\u4f7f\u3048\u3070\u81ea\u52d5\u3067\u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u308b<\/strong>\u305f\u3081\u3001\u591a\u304f\u306e\u5834\u5408\u3053\u306e\u30c4\u30fc\u30eb\u306f\u4e0d\u8981\u3067\u3059\u3002\u554f\u984c\u306b\u306a\u308b\u306e\u306f\u3001\u30ab\u30b9\u30bf\u30e0HTML\u30d6\u30ed\u30c3\u30af\u3084\u30c6\u30fc\u30de\u30d5\u30a1\u30a4\u30eb\u306b\u76f4\u63a5\u66f8\u304f\u3068\u304d\u3001\u3042\u308b\u3044\u306f\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u306b\u30b3\u30d4\u30da\u3057\u305f\u306e\u306b\u5d29\u308c\u308b\u3068\u304d\u3067\u3059\u3002\u7279\u306b <code>&lt;script&gt;<\/code> \u3092\u542b\u3080\u30b3\u30fc\u30c9\u306f\u3001\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u306a\u3044\u3068\u30da\u30fc\u30b8\u5185\u3067\u5b9f\u884c\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u5fc5\u305a\u5909\u63db\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\t\t<\/details>\n\t\t<details>\n\t\t\t<summary>\u4e8c\u91cd\u306b\u5909\u63db\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3057\u305f<\/summary>\n\t\t\t<p><code>&amp;amp;lt;<\/code> \u306e\u3088\u3046\u306b <code>amp;<\/code> \u304c\u91cd\u306a\u3063\u3066\u3044\u305f\u3089\u4e8c\u91cd\u5909\u63db\u3067\u3059\u3002\u300c\u5143\u306e\u6587\u5b57\u306b\u623b\u3059\u300d\u30671\u56de\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3068\u76f4\u308a\u307e\u3059\u3002\u3059\u3067\u306b\u30a8\u30b9\u30b1\u30fc\u30d7\u6e08\u307f\u306e\u30c6\u30ad\u30b9\u30c8\u3092\u518d\u5ea6\u30a8\u30b9\u30b1\u30fc\u30d7\u3059\u308b\u3068\u8d77\u304d\u308b\u306e\u3067\u3001\u8cbc\u308a\u4ed8\u3051\u308b\u524d\u306b\u5143\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\t\t<\/details>\n\t\t<details>\n\t\t\t<summary>\u306a\u305c\u30a8\u30b9\u30b1\u30fc\u30d7\u304c\u5fc5\u8981\u306a\u306e\u3067\u3059\u304b\uff1f<\/summary>\n\t\t\t<p>\u8868\u793a\u5d29\u308c\u3092\u9632\u3050\u305f\u3081\u3060\u3051\u3067\u306a\u304f\u3001<strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u7406\u7531<\/strong>\u3082\u3042\u308a\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u304c\u5165\u529b\u3057\u305f\u5185\u5bb9\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u305b\u305a\u306b\u30da\u30fc\u30b8\u3078\u51fa\u529b\u3059\u308b\u3068\u3001\u60aa\u610f\u306e\u3042\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u5b9f\u884c\u3055\u308c\u308b\u300cXSS\u300d\u3068\u3044\u3046\u8106\u5f31\u6027\u306b\u306a\u308a\u307e\u3059\u3002\u30d5\u30a9\u30fc\u30e0\u306e\u5165\u529b\u5024\u3092\u753b\u9762\u306b\u51fa\u3059\u51e6\u7406\u3092\u81ea\u4f5c\u3059\u308b\u3068\u304d\u306f\u3001\u5fc5\u305a\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\t\t<\/details>\n\t<\/div>\n<\/div>\n\n<div class=\"wt-tool\"><div class=\"wt-policy\"><p class=\"wt-policy-title\">\ud83d\udd12 \u8abf\u3079\u305f\u5185\u5bb9\u306f\u8a18\u9332\u30fb\u516c\u958b\u3057\u307e\u305b\u3093<\/p><ul><li><strong>\u691c\u7d22\u3057\u305f\u5185\u5bb9\u3092\u4fdd\u5b58\u30fb\u4e00\u89a7\u5316\u30fb\u516c\u958b\u3057\u307e\u305b\u3093\u3002<\/strong>\u8abf\u67fb\u7d50\u679c\u3092\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5316\u3057\u3066\u691c\u7d22\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u305f\u308a\u3001\u4ed6\u306e\u5229\u7528\u8005\u306b\u898b\u305b\u305f\u308a\u3059\u308b\u3053\u3068\u306f\u4e00\u5207\u3042\u308a\u307e\u305b\u3093\u3002<\/li><li><strong>\u691c\u7d22\u5c65\u6b74\u3092\u6b8b\u3057\u307e\u305b\u3093\u3002<\/strong>\u8ab0\u304c\u4f55\u3092\u8abf\u3079\u305f\u304b\u3092\u7d10\u3065\u3051\u3066\u84c4\u7a4d\u3059\u308b\u3053\u3068\u306f\u3057\u307e\u305b\u3093\u3002\u4f1a\u54e1\u767b\u9332\u30fb\u30ed\u30b0\u30a4\u30f3\u3082\u4e0d\u8981\u3067\u3059\u3002<\/li><li><strong>\u7b2c\u4e09\u8005\u306b\u63d0\u4f9b\u30fb\u8ca9\u58f2\u3057\u307e\u305b\u3093\u3002<\/strong>\u55b6\u696d\u30ea\u30b9\u30c8\u3084\u5e83\u544a\u76ee\u7684\u3067\u306e\u5229\u7528\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/li><li>\u30b5\u30fc\u30d0\u30fc\u8ca0\u8377\u3092\u6291\u3048\u308b\u305f\u3081\u3001<strong>\u5224\u5b9a\u7d50\u679c\u306e\u307f\u6700\u59271\u6642\u9593\u306e\u4e00\u6642\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>\u306b\u4fdd\u6301\u3057\u3001\u6642\u9593\u306e\u7d4c\u904e\u3067\u81ea\u52d5\u7684\u306b\u6d88\u3048\u307e\u3059\u3002\u9023\u7d9a\u30a2\u30af\u30bb\u30b9\u306e\u5236\u9650\u7528\u306bIP\u30a2\u30c9\u30ec\u30b9\u3092<strong>\u30cf\u30c3\u30b7\u30e5\u5316\u3057\u305f\u5024<\/strong>\u3092\u6700\u592710\u5206\u9593\u3060\u3051\u4fdd\u6301\u3057\u307e\u3059\uff08\u5143\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u4fdd\u5b58\u3057\u307e\u305b\u3093\uff09\u3002<\/li><li>\u8abf\u3079\u305f\u5bfe\u8c61\u306f\u5171\u6709\u7528\u306bURL\u306e<code>#<\/code>\u4ee5\u964d\u306b\u4ed8\u304d\u307e\u3059\u304c\u3001\u3053\u306e\u90e8\u5206\u306f\u30b5\u30fc\u30d0\u30fc\u306b\u3082\u30a2\u30af\u30bb\u30b9\u89e3\u6790\u306b\u3082\u9001\u4fe1\u3055\u308c\u307e\u305b\u3093\u3002<\/li><\/ul><\/div><\/div>\n\n<script>\n(function () {\n\tvar root = document.getElementById('wt-htmlesc');\n\tif (!root || !window.WT) return;\n\tvar W = WT;\n\tvar resultBox = root.querySelector('.wt-result');\n\tvar input = document.getElementById('wt-he-in');\n\n\tfunction render() {\n\t\tvar src = input.value;\n\t\tif (!src) { resultBox.hidden = true; return; }\n\n\t\tvar how = document.getElementById('wt-he-mode').value;\n\t\tvar quote = document.getElementById('wt-he-quote').checked;\n\t\tvar nbsp = document.getElementById('wt-he-nbsp').checked;\n\t\tvar out;\n\n\t\tif (how === 'escape') {\n\t\t\t\/\/ \u30a2\u30f3\u30d1\u30b5\u30f3\u30c9\u3092\u6700\u521d\u306b\u51e6\u7406\u3057\u306a\u3044\u3068\u4e8c\u91cd\u5909\u63db\u306b\u306a\u308b\n\t\t\tout = src.replace(\/&\/g, '&amp;').replace(\/<\/g, '&lt;').replace(\/>\/g, '&gt;');\n\t\t\tif (quote) out = out.replace(\/\"\/g, '&quot;').replace(\/'\/g, '&#39;');\n\t\t\tif (nbsp) out = out.replace(\/ \/g, '&nbsp;');\n\t\t} else {\n\t\t\tvar el = document.createElement('textarea');\n\t\t\tel.innerHTML = src;\n\t\t\tout = el.value;\n\t\t}\n\n\t\tvar html = '<h3 class=\"wt-h\">\u5909\u63db\u7d50\u679c<\/h3>';\n\t\thtml += '<div class=\"wt-toolbar\"><button type=\"button\" class=\"wt-mini\" id=\"wt-he-copy\">\u30b3\u30d4\u30fc<\/button>' +\n\t\t\t'<span class=\"wt-count\">' + out.length + ' \u6587\u5b57<\/span><\/div>';\n\t\thtml += '<pre class=\"wt-code\" style=\"white-space:pre-wrap;max-height:24em;overflow:auto\">' + W.esc(out) + '<\/pre>';\n\n\t\tif (how === 'escape') {\n\t\t\thtml += '<h3 class=\"wt-h\">\u30da\u30fc\u30b8\u4e0a\u3067\u306e\u898b\u3048\u65b9<\/h3>';\n\t\t\thtml += '<div class=\"wt-table-wrap\"><table class=\"wt-table\"><tbody><tr><td><span class=\"wt-mono\" style=\"white-space:pre-wrap\">' +\n\t\t\t\tW.esc(src) + '<\/span><\/td><\/tr><\/tbody><\/table><\/div>';\n\t\t\thtml += '<p 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