{"id":169872,"date":"2024-05-08T16:55:18","date_gmt":"2024-05-08T08:55:18","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/169872.html"},"modified":"2024-05-08T16:55:22","modified_gmt":"2024-05-08T08:55:22","slug":"javascript-%e5%af%b9%e6%95%b0%e5%80%bc%e6%94%b9%e5%8f%98-%e7%94%a8innerhtml%e8%bf%98%e6%98%af-value","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/169872.html","title":{"rendered":"javascript \u5bf9\u6570\u503c\u6539\u53d8 \u7528innerHTML\u8fd8\u662f value"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27040410\/04fe3248-e662-4d69-bf42-1339528d9070.webp\" alt=\"javascript \u5bf9\u6570\u503c\u6539\u53d8 \u7528innerHTML\u8fd8\u662f value\" \/><\/p>\n<p><p>\u5728JavaScript\u4e2d\uff0c\u5904\u7406\u6570\u5b57\u503c\u7684\u66f4\u65b0\u65f6\uff0c\u662f\u5426\u4f7f\u7528<code>innerHTML<\/code>\u6216<code>value<\/code>\u53d6\u51b3\u4e8e\u5177\u4f53\u60c5\u51b5\u3002<em><strong>\u5728\u64cd\u4f5cinput\u6216textarea\u5143\u7d20\u65f6\uff0c\u5e94\u91c7\u7528 <code>value<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u6216\u66f4\u65b0\u5176\u5185\u5bb9\uff0c\u56e0\u4e3a<code>value<\/code>\u5c5e\u6027\u4e13\u4e3a\u8f93\u5165\u63a7\u4ef6\u8bbe\u8ba1\u3001\u80fd\u591f\u76f4\u63a5\u53cd\u6620\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9\u3002\u800c\u5728\u5904\u7406\u975e\u8f93\u5165\u5143\u7d20\u5982div\u3001span\u7b49\u65f6\uff0c\u5219\u9700\u901a\u8fc7<code>innerHTML<\/code>\u5c5e\u6027\u6765\u4fee\u6539\u5176\u5185\u90e8HTML\u5185\u5bb9\uff0c\u53ef\u7528\u4e8e\u5c55\u793a\u66f4\u65b0\u540e\u7684\u6570\u5b57\u6216\u5176\u5b83\u7c7b\u578b\u7684\u6570\u636e\u3002<\/strong><\/em> \u672c\u6bb5\u5148\u7740\u91cd\u4ecb\u7ecd\u4e00\u4e0b<code>value<\/code>\u7684\u4f7f\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528<code>VALUE<\/code>\u5c5e\u6027<\/h3>\n<\/p>\n<p><p><code>value<\/code>\u5c5e\u6027\u4e3b\u8981\u9002\u7528\u4e8e\u8868\u5355\u5143\u7d20\uff0c\u5982<code>input<\/code>\u3001<code>textarea<\/code>\u548c<code>select<\/code>\u7b49\u3002\u8fd9\u4e9b\u5143\u7d20\u901a\u8fc7\u7528\u6237\u4ea4\u4e92\u6765\u63a5\u6536\u6570\u636e\uff0c\u5e76\u5c06\u6570\u636e\u5b58\u50a8\u5728\u5176<code>value<\/code>\u5c5e\u6027\u4e2d\u3002\u4e3e\u4f8b\u6765\u8bf4\uff0c\u5f53\u4f60\u9700\u8981\u6536\u96c6\u7528\u6237\u8f93\u5165\u7684\u4fe1\u606f\u6216\u662f\u7ed9\u8f93\u5165\u5b57\u6bb5\u9884\u586b\u5145\u6570\u636e\u65f6\uff0c\u5c31\u5e94\u8be5\u4f7f\u7528<code>value<\/code>\u5c5e\u6027\u3002<\/p>\n<\/p>\n<p><h4>\u6570\u636e\u6536\u96c6<\/h4>\n<\/p>\n<p><p>\u5728\u6784\u5efa\u8868\u5355\u65f6\uff0c\u4f7f\u7528<code>value<\/code>\u5c5e\u6027\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u4e2a\u8f93\u5165\u5b57\u6bb5\u4e2d\u586b\u5165\u6570\u5b57\uff0c\u7136\u540e\u901a\u8fc7JavaScript\u83b7\u53d6\u8fd9\u4e2a\u6570\u5b57\u503c\u4ee5\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5904\u7406\u6216\u9a8c\u8bc1\u3002\u64cd\u4f5c<code>value<\/code>\u662f\u5b9e\u73b0\u8fd9\u4e00\u8fc7\u7a0b\u4e2d\u6700\u76f4\u63a5\u3001\u6700\u6709\u6548\u7684\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<p><h4>\u9884\u586b\u5145\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u7528\u6237\u7684\u64cd\u4f5c\u6216\u5148\u524d\u7684\u8f93\u5165\u81ea\u52a8\u586b\u5145\u8868\u5355\u5b57\u6bb5\u3002\u8fd9\u65f6\uff0c\u52a8\u6001\u8bbe\u7f6e\u8f93\u5165\u5143\u7d20\u7684<code>value<\/code>\u5c5e\u6027\u80fd\u591f\u786e\u4fdd\u7528\u6237\u770b\u5230\u7684\u8868\u5355\u5df2\u7ecf\u5305\u542b\u4e86\u4e00\u4e9b\u9884\u8bbe\u6570\u636e\uff0c\u4fbf\u4e8e\u7528\u6237\u5feb\u901f\u4fee\u6539\u6216\u786e\u8ba4\u4fe1\u606f\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f7f\u7528<code>INNERHTML<\/code>\u5c5e\u6027<\/h3>\n<\/p>\n<p><p>\u4e0e<code>value<\/code>\u5c5e\u6027\u4e0d\u540c\uff0c<code>innerHTML<\/code>\u5c5e\u6027\u9002\u7528\u4e8e\u975e\u8868\u5355\u5143\u7d20\uff0c\u6bd4\u5982<code>div<\/code>\u3001<code>span<\/code>\u3001<code>p<\/code>\u7b49\u3002\u8fd9\u4e2a\u5c5e\u6027\u5141\u8bb8\u4f60\u83b7\u53d6\u6216\u8bbe\u7f6e\u5143\u7d20\u5185\u90e8\u7684HTML\u5185\u5bb9\uff0c\u8fd9\u4e0d\u4ec5\u9650\u4e8e\u6587\u672c\uff0c\u8fd8\u5305\u62ec\u5d4c\u5957\u7684\u6807\u7b7e\u53ca\u5176\u5c5e\u6027\u3002<\/p>\n<\/p>\n<p><h4>\u5c55\u793a\u52a8\u6001\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u5f53\u9700\u8981\u5728\u7f51\u9875\u4e0a\u52a8\u6001\u663e\u793a\u6216\u66f4\u65b0\u4fe1\u606f\u65f6\uff0c<code>innerHTML<\/code>\u5c31\u663e\u5f97\u975e\u5e38\u6709\u7528\u3002\u6bd4\u5982\uff0c\u5c55\u793a\u4e00\u4e2a\u7ecf\u8fc7\u8ba1\u7b97\u7684\u6570\u5b57\u7ed3\u679c\u6216\u8005\u4ece\u670d\u52a1\u5668\u83b7\u53d6\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5143\u7d20\u7684<code>innerHTML<\/code>\u6765\u5b9e\u73b0\u5185\u5bb9\u7684\u5feb\u901f\u66f4\u65b0\u3002<\/p>\n<\/p>\n<p><h4>\u521b\u5efa\u4e30\u5bcc\u7684\u5185\u5bb9\u7ed3\u6784<\/h4>\n<\/p>\n<p><p>\u6709\u65f6\uff0c\u4ec5\u4ec5\u663e\u793a\u6587\u672c\u4fe1\u606f\u662f\u4e0d\u591f\u7684\uff0c\u9700\u8981\u66f4\u4e30\u5bcc\u7684\u5185\u5bb9\u5c55\u793a\uff0c\u6bd4\u5982\u5217\u8868\u3001\u94fe\u63a5\u3001\u56fe\u7247\u7b49\u3002\u901a\u8fc7<code>innerHTML<\/code>\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u66f4\u65b0\u6587\u672c\uff0c\u8fd8\u53ef\u4ee5\u63d2\u5165HTML\u6807\u7b7e\u548c\u76f8\u5e94\u5c5e\u6027\uff0c\u521b\u9020\u51fa\u89c6\u89c9\u6548\u679c\u66f4\u52a0\u4e30\u5bcc\u7684\u9875\u9762\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u9009\u62e9<code>VALUE<\/code>\u8fd8\u662f<code>INNERHTML<\/code><\/h3>\n<\/p>\n<p><p>\u9009\u62e9\u4f7f\u7528<code>value<\/code>\u8fd8\u662f<code>innerHTML<\/code>\u4e3b\u8981\u57fa\u4e8e\u76ee\u6807\u5143\u7d20\u7684\u7c7b\u578b\u4ee5\u53ca\u4f60\u60f3\u8981\u5b9e\u73b0\u7684\u529f\u80fd\u3002<em><strong>\u5728\u5904\u7406\u8868\u5355\u5143\u7d20\u53ca\u5176\u6570\u636e\u65f6\u4f18\u5148\u8003\u8651<code>value<\/code>\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u5173\u8054\u5230\u7528\u6237\u8f93\u5165\u4e14\u66f4\u52a0\u89c4\u8303\u3002\u800c\u5728\u66f4\u65b0\u975e\u8868\u5355\u5143\u7d20\u6216\u9700\u8981\u63d2\u5165HTML\u6807\u7b7e\u548c\u5c5e\u6027\u8fdb\u884c\u4e30\u5bcc\u5185\u5bb9\u5c55\u793a\u65f6\uff0c\u5219\u5e94\u9009\u7528<code>innerHTML<\/code>\u3002<\/strong><\/em><\/p>\n<\/p>\n<p><h3>\u56db\u3001\u6700\u4f73\u5b9e\u8df5<\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u4e3a\u4e86\u786e\u4fdd\u524d\u7aef\u9875\u9762\u7684\u5b89\u5168\u6027\u548c\u9ad8\u6548\u6027\uff0c\u5e94\u5f53\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<\/p>\n<p><h4>\u9632\u6b62XSS\u653b\u51fb<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528<code>innerHTML<\/code>\u65f6\u9700\u7279\u522b\u5c0f\u5fc3\uff0c\u56e0\u4e3a\u4e0d\u6b63\u786e\u7684\u4f7f\u7528\u53ef\u80fd\u5bfc\u81f4\u8de8\u7ad9\u811a\u672c\uff08XSS\uff09\u653b\u51fb\u3002\u4fdd\u8bc1\u63d2\u5165\u5185\u5bb9\u7684\u5b89\u5168\u6027\u662f\u4f7f\u7528<code>innerHTML<\/code>\u65f6\u5fc5\u987b\u8003\u8651\u7684\u91cd\u70b9\u3002<\/p>\n<\/p>\n<p><h4>\u4f18\u5316\u6027\u80fd<\/h4>\n<\/p>\n<p><p>\u9891\u7e41\u5730\u64cd\u4f5cDOM\u4f1a\u5f71\u54cd\u9875\u9762\u6027\u80fd\u3002\u65e0\u8bba\u662f\u4f7f\u7528<code>value<\/code>\u8fd8\u662f<code>innerHTML<\/code>\uff0c\u90fd\u5e94\u5f53\u5c3d\u91cf\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684DOM\u64cd\u4f5c\uff0c\u6bd4\u5982\u901a\u8fc7\u805a\u5408\u6570\u636e\u66f4\u65b0\u6765\u51cf\u5c11\u64cd\u4f5c\u6b21\u6570\u3002<\/p>\n<\/p>\n<p><h4>\u7528\u6237\u4f53\u9a8c<\/h4>\n<\/p>\n<p><p>\u5728\u51b3\u5b9a\u5982\u4f55\u66f4\u65b0\u9875\u9762\u5185\u5bb9\u65f6\uff0c\u5e94\u8003\u8651\u7528\u6237\u4f53\u9a8c\u3002\u786e\u4fdd\u66f4\u65b0\u7684\u5185\u5bb9\u5bf9\u7528\u6237\u6765\u8bf4\u662f\u6e05\u6670\u53ef\u89c1\u7684\uff0c\u5e76\u4e14\u66f4\u65b0\u64cd\u4f5c\u4e0d\u4f1a\u5bfc\u81f4\u754c\u9762\u4e0d\u5fc5\u8981\u7684\u8df3\u52a8\u6216\u95ea\u70c1\uff0c\u4ece\u800c\u63d0\u4f9b\u66f4\u52a0\u6d41\u7545\u548c\u6109\u60a6\u7684\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n<p><h3>\u7ed3\u8bba<\/h3>\n<\/p>\n<p><p>\u5728JavaScript\u4e2d\uff0c\u6839\u636e\u64cd\u4f5c\u7684\u5143\u7d20\u7c7b\u578b\u548c\u76ee\u6807\u529f\u80fd\u9009\u62e9\u4f7f\u7528<code>value<\/code>\u6216<code>innerHTML<\/code>\u3002\u5728\u5904\u7406\u8868\u5355\u5143\u7d20\u548c\u7528\u6237\u8f93\u5165\u65f6\u4f18\u5148\u4f7f\u7528<code>value<\/code>\uff0c\u5728\u8fdb\u884c\u975e\u8f93\u5165\u5143\u7d20\u7684\u5185\u5bb9\u66f4\u65b0\u6216\u5bcc\u6587\u672c\u64cd\u4f5c\u65f6\u9009\u62e9<code>innerHTML<\/code>\u3002\u6070\u5f53\u5730\u4f7f\u7528\u8fd9\u4e24\u4e2a\u5c5e\u6027\uff0c\u53ef\u4ee5\u4f7f\u4f60\u7684Web\u5e94\u7528\u66f4\u52a0\u7075\u6d3b\u548c\u5f3a\u5927\u3002\u540c\u65f6\uff0c\u6ce8\u610f\u5b89\u5168\u3001\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u65b9\u9762\u7684\u6700\u4f73\u5b9e\u8df5\uff0c\u4ee5\u6784\u5efa\u9ad8\u8d28\u91cf\u7684\u524d\u7aef\u5e94\u7528\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u4f7f\u7528innerHTML\u5728JavaScript\u4e2d\u6539\u53d8\u6570\u503c\uff1f<\/strong><\/p>\n<p>\u4f7f\u7528innerHTML\u53ef\u4ee5\u7528\u4e8e\u4fee\u6539HTML\u5143\u7d20\u7684\u5185\u5bb9\uff0c\u5305\u62ec\u6587\u672c\u3001HTML\u6807\u7b7e\u548c\u5c5e\u6027\u3002\u5982\u679c\u60f3\u8981\u6539\u53d8\u6570\u503c\uff0c\u53ef\u4ee5\u5148\u901a\u8fc7innerHTML\u83b7\u53d6\u5230\u8981\u4fee\u6539\u7684\u5143\u7d20\uff0c\u7136\u540e\u4f7f\u7528parseInt\u6216parseFloat\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u5b57\uff0c\u8fdb\u884c\u6570\u503c\u7684\u8fd0\u7b97\u548c\u4fee\u6539\uff0c\u6700\u540e\u518d\u5c06\u4fee\u6539\u540e\u7684\u6570\u503c\u901a\u8fc7innerHTML\u8d4b\u503c\u56de\u5143\u7d20\u3002<\/p>\n<p><strong>2. \u5728JavaScript\u4e2d\u6539\u53d8\u6570\u503c\u662f\u4f7f\u7528innerHTML\u8fd8\u662fvalue\u66f4\u597d\uff1f<\/strong><\/p>\n<p>\u8fd9\u53d6\u51b3\u4e8e\u8981\u6539\u53d8\u7684\u6570\u503c\u662f\u5c5e\u4e8e\u4ec0\u4e48\u7c7b\u578b\u7684\u5143\u7d20\u3002\u5982\u679c\u662f\u8868\u5355\u5143\u7d20\uff0c\u6bd4\u5982input\u6216select\uff0c\u5efa\u8bae\u4f7f\u7528value\u5c5e\u6027\u6765\u76f4\u63a5\u6539\u53d8\u6570\u503c\u3002\u8fd9\u662f\u56e0\u4e3avalue\u5c5e\u6027\u4e0e\u8868\u5355\u5143\u7d20\u7684\u503c\u76f4\u63a5\u5173\u8054\uff0c\u53ef\u4ee5\u5b9e\u65f6\u53cd\u6620\u7528\u6237\u8f93\u5165\u6216JavaScript\u5bf9\u5176\u7684\u4fee\u6539\u3002\u800cinnerHTML\u7528\u4e8e\u4fee\u6539\u975e\u8868\u5355\u5143\u7d20\u7684\u6570\u503c\uff0c\u6bd4\u5982div\u3001span\u7b49\u6807\u7b7e\u7684\u5185\u5bb9\u3002<\/p>\n<p><strong>3. \u4f7f\u7528innerHTML\u4e0evalue\u5c5e\u6027\u6539\u53d8\u6570\u503c\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/strong><\/p>\n<p>\u9664\u4e86\u9002\u7528\u4e8e\u4e0d\u540c\u7c7b\u578b\u7684\u5143\u7d20\u5916\uff0cinnerHTML\u4e0evalue\u5c5e\u6027\u6539\u53d8\u6570\u503c\u8fd8\u6709\u5176\u4ed6\u533a\u522b\u3002\u4f7f\u7528innerHTML\u53ef\u4ee5\u66f4\u7075\u6d3b\u5730\u66f4\u6539\u6570\u503c\uff0c\u53ef\u4ee5\u540c\u65f6\u4fee\u6539\u5143\u7d20\u7684\u6587\u672c\u548cHTML\u7ed3\u6784\uff0c\u56e0\u6b64\u9002\u7528\u4e8e\u9700\u8981\u52a8\u6001\u66f4\u65b0\u7684\u590d\u6742\u6570\u503c\u3002\u800cvalue\u5c5e\u6027\u53ea\u80fd\u6539\u53d8\u5143\u7d20\u7684\u503c\uff0c\u9002\u7528\u4e8e\u5b9e\u65f6\u4fee\u6539\u8868\u5355\u5143\u7d20\u7684\u8f93\u5165\u503c\u6216\u9009\u4e2d\u9879\u3002\u5982\u679c\u53ea\u662f\u5355\u7eaf\u7684\u6539\u53d8\u6570\u503c\uff0c\u5efa\u8bae\u4f7f\u7528value\u5c5e\u6027\uff0c\u5b83\u66f4\u7b80\u6d01\u9ad8\u6548\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u4e2d\uff0c\u5904\u7406\u6570\u5b57\u503c\u7684\u66f4\u65b0\u65f6\uff0c\u662f\u5426\u4f7f\u7528innerHTML\u6216value\u53d6\u51b3\u4e8e\u5177\u4f53\u60c5\u51b5\u3002\u5728\u64cd\u4f5cin [&hellip;]","protected":false},"author":3,"featured_media":169877,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/169872"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=169872"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/169872\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/169877"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=169872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=169872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=169872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}