{"id":52598,"date":"2024-12-03T14:15:33","date_gmt":"2024-12-03T06:15:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52598\/"},"modified":"2024-12-03T14:15:33","modified_gmt":"2024-12-03T06:15:33","slug":"javascript%e4%b8%ad%e5%a6%82%e4%bd%95%e8%8e%b7%e5%8f%96textarea%e5%85%83%e7%b4%a0%e7%9a%84%e5%80%bc%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52598\/","title":{"rendered":"JavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>JavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f <\/h1>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u6587\u7ae0\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0c\u7c73\u4e91\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300aJavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f \u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241121\/1732197449673f3c49872cf.jpg\" class=\"aligncenter\" title=\"JavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f\u63d2\u56fe\" alt=\"JavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>JavaScript\u4e2dtextarea\u5143\u7d20\u7684\u503c\u83b7\u53d6\u65b9\u6cd5<\/strong><\/p>\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n<p>\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\u65f6\uff0c\u4f7f\u7528innerText\u65b9\u6cd5\u65e0\u6548\u3002\u5176\u4ed6\u65b9\u6cd5\u662f\u5426\u53ef\u884c\uff1f<\/p>\n<p><strong>\u7b54\u6848\uff1a<\/strong><\/p>\n<p>JavaScript\u4e2d\u83b7\u53d6textarea\u5143\u7d20\u503c\u7684\u63a8\u8350\u65b9\u6cd5\u662f\u4f7f\u7528.value\u5c5e\u6027\uff0c\u800c\u4e0d\u662f.innerHTML\u5c5e\u6027\u3002<\/p>\n<p><strong>\u539f\u56e0\uff1a<\/strong><\/p>\n<ul>\n<li>\u6587\u6863\u7ea6\u5b9a\u8868\u5355\u63a7\u4ef6\uff08\u5982textarea\uff09\u7684\u503c\u5e94\u901a\u8fc7.value\u83b7\u53d6\u3002<\/li>\n<li>textarea\u5143\u7d20\u867d\u7136\u5177\u6709\u5185\u90e8HTML\u5185\u5bb9\uff0c\u4f46\u5185\u90e8\u4f7f\u7528Shadow DOM\u5b9e\u73b0\uff0c\u5bfc\u81f4.innerHTML\u83b7\u53d6\u4e0d\u5230\u503c\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<pre>var text = document.getElementById(\"text\");\nvar btn = document.getElementById(\"btn\");\nbtn.onclick = function () {\n  console.log(text.value); \/\/ \u6b63\u786e\u83b7\u53d6\u503c\n};<\/pre>\n<p><strong>\u76f8\u5173\u80cc\u666f\u77e5\u8bc6\uff1a<\/strong><\/p>\n<ul>\n<li>Shadow DOM\u662fWeb Components\u89c4\u8303\u7684\u4e00\u90e8\u5206\uff0c\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u521b\u5efa\u72ec\u7acb\u4e8e\u9875\u9762\u4e3b\u6587\u6863\u7684DOM\u3002<\/li>\n<li>\u5bf9\u4e8e\u8868\u5355\u63a7\u4ef6\uff0c\u4f7f\u7528.value\u5c5e\u6027\u83b7\u53d6\u503c\u662f\u66f4\u7b26\u5408\u6807\u51c6\u548c\u63a8\u8350\u7684\u505a\u6cd5\u3002<\/li>\n<\/ul>\n<p>\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aJavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f \u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   Kindle\u7535\u8111\uff1a\u4e00\u6b3e\u9769\u65b0\u9605\u8bfb\u4f53\u9a8c\u7684\u7535\u5b50\u8bbe\u5907\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f \u5bf9\u4e8e\u4e00\u4e2a\u6587\u7ae0\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0c\u7c73\u4e91\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300aJavaScript\u4e2d\u5982\u4f55\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f \u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01 JavaScript\u4e2dtextarea\u5143\u7d20\u7684\u503c\u83b7\u53d6\u65b9\u6cd5 \u95ee\u9898\uff1a \u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\u65f6\uff0c\u4f7f\u7528innerText\u65b9\u6cd5\u65e0\u6548\u3002\u5176\u4ed6\u65b9\u6cd5\u662f\u5426\u53ef\u884c\uff1f \u7b54\u6848\uff1a JavaScript\u4e2d\u83b7\u53d6textarea\u5143\u7d20\u503c\u7684\u63a8\u8350\u65b9\u6cd5\u662f\u4f7f\u7528.value\u5c5e\u6027\uff0c\u800c\u4e0d\u662f.innerHTML\u5c5e\u6027\u3002 \u539f\u56e0\uff1a \u6587\u6863\u7ea6\u5b9a\u8868\u5355\u63a7\u4ef6\uff08\u5982textarea\uff09\u7684\u503c\u5e94\u901a\u8fc7.value\u83b7\u53d6\u3002 textarea\u5143\u7d20\u867d\u7136\u5177\u6709\u5185\u90e8HTML\u5185\u5bb9\uff0c\u4f46\u5185\u90e8\u4f7f\u7528Shadow DOM\u5b9e\u73b0\uff0c\u5bfc\u81f4.innerHTML\u83b7\u53d6\u4e0d\u5230\u503c\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a var text = document.getElementById(&#8220;text&#8221;); 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