{"id":28129,"date":"2024-11-24T08:36:37","date_gmt":"2024-11-24T00:36:37","guid":{"rendered":"https:\/\/fwq.ai\/blog\/28129\/"},"modified":"2024-11-24T08:36:37","modified_gmt":"2024-11-24T00:36:37","slug":"javascript%e4%b8%ad%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a1%ae%e8%8e%b7%e5%8f%96textarea%e5%85%83%e7%b4%a0%e7%9a%84%e5%80%bc%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/28129\/","title":{"rendered":"JavaScript\u4e2d\u5982\u4f55\u6b63\u786e\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173140276110938.jpg\" class=\"aligncenter\" title=\"JavaScript\u4e2d\u5982\u4f55\u6b63\u786e\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f\u63d2\u56fe\" alt=\"JavaScript\u4e2d\u5982\u4f55\u6b63\u786e\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>\u5728\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u4f7f\u7528innerHTML\u83b7\u53d6\u4e3a\u7a7a\u503c\u7684\u60c5\u51b5\u3002\u8fd9\u662f\u56e0\u4e3ainnerHTML\u4ec5\u9002\u7528\u4e8e\u5177\u6709\u5185\u90e8HTML\u5185\u5bb9\u7684DOM\u5143\u7d20\uff0c\u4f8b\u5982<\/p>\n<p>  \u548c<br \/>\n<span>\uff0c\u800c\u4e0d\u9002\u7528\u4e8etextarea\u7b49\u8868\u5355\u63a7\u4ef6\u7c7b\u5143\u7d20\u3002<\/p>\n<p>\u6839\u636e\u6587\u6863\u7ea6\u5b9a\uff0c\u8868\u5355\u63a7\u4ef6\u7c7b\u7684\u53d6\u503c\u5e94\u4f7f\u7528.value\u5c5e\u6027\u3002\u56e0\u6b64\uff0c\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\u7684\u6b63\u786e\u65b9\u6cd5\u4e3a\uff1a<\/p>\n<pre>var info = text.value;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236  <\/p>\n<p>\u53e6\u4e00\u65b9\u9762\uff0c\u4f7f\u7528innerHTML\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\u4e0d\u751f\u6548\uff0c\u662f\u56e0\u4e3atextarea\u662fWeb Components\u7ec4\u4ef6\uff0c\u5176\u5185\u90e8\u4f7f\u7528\u4e86Shadow DOM\u3002\u867d\u7136\u4f60\u53ef\u4ee5\u5728\u5ba1\u67e5\u5143\u7d20\u65f6\u770b\u5230\u6dfb\u52a0\u4e86\u503c\uff0c\u4f46\u9875\u9762\u4e0d\u4f1a\u663e\u793a\uff0c\u56e0\u4e3aShadow DOM\u5185\u90e8\u6709\u81ea\u5df1\u7684DOM\u5b9e\u73b0\u903b\u8f91\u3002<\/p>\n<p><\/span>  <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fJavaScript\u4e2d\u5982\u4f55\u6b63\u786e\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>javascript\u4e2dtextarea\u5143\u7d20\u7684\u503c\u83b7\u53d6\u65b9\u6cd5 \u5728\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u4f7f\u7528innerHTML\u83b7\u53d6\u4e3a\u7a7a\u503c\u7684\u60c5\u51b5\u3002\u8fd9\u662f\u56e0\u4e3ainnerHTML\u4ec5\u9002\u7528\u4e8e\u5177\u6709\u5185\u90e8HTML\u5185\u5bb9\u7684DOM\u5143\u7d20\uff0c\u4f8b\u5982 \u548c \uff0c\u800c\u4e0d\u9002\u7528\u4e8etextarea\u7b49\u8868\u5355\u63a7\u4ef6\u7c7b\u5143\u7d20\u3002 \u6839\u636e\u6587\u6863\u7ea6\u5b9a\uff0c\u8868\u5355\u63a7\u4ef6\u7c7b\u7684\u53d6\u503c\u5e94\u4f7f\u7528.value\u5c5e\u6027\u3002\u56e0\u6b64\uff0c\u83b7\u53d6textarea\u5143\u7d20\u7684\u503c\u7684\u6b63\u786e\u65b9\u6cd5\u4e3a\uff1a var info = text.value; 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