{"id":53699,"date":"2024-12-03T13:21:10","date_gmt":"2024-12-03T05:21:10","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53699\/"},"modified":"2024-12-03T13:21:10","modified_gmt":"2024-12-03T05:21:10","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-javascript-%e5%ae%9e%e7%8e%b0%e6%96%87%e6%9c%ac%e6%a1%86%e6%a0%a1%e9%aa%8c%e5%b9%b6%e6%98%be%e7%a4%ba%e5%b8%a6%e6%9c%89%e5%9b%be%e6%a0%87%e7%9a%84%e9%94%99-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53699\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 JavaScript \u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\u5e76\u663e\u793a\u5e26\u6709\u56fe\u6807\u7684\u9519\u8bef\u4fe1\u606f\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528 JavaScript \u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\u5e76\u663e\u793a\u5e26\u6709\u56fe\u6807\u7684\u9519\u8bef\u4fe1\u606f\uff1f <\/h1>\n<p>\u54c8\u55bd\uff01\u4eca\u5929\u5fc3\u8840\u6765\u6f6e\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u4f7f\u7528 JavaScript \u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\u5e76\u663e\u793a\u5e26\u6709\u56fe\u6807\u7684\u9519\u8bef\u4fe1\u606f\uff1f \u300b<\/span>\uff0c\u60f3\u5fc5\u5927\u5bb6\u5e94\u8be5\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u90fd\u4e0d\u964c\u751f\u5427\uff0c\u90a3\u4e48\u9605\u8bfb\u672c\u6587\u5c31\u90fd\u4e0d\u4f1a\u5f88\u56f0\u96be\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u82e5\u662f\u4f60\u6b63\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u5343\u4e07\u522b\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241203\/1733231026674f01b23cb1c.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u4f7f\u7528 JavaScript \u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\u5e76\u663e\u793a\u5e26\u6709\u56fe\u6807\u7684\u9519\u8bef\u4fe1\u606f\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u4f7f\u7528 JavaScript \u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\u5e76\u663e\u793a\u5e26\u6709\u56fe\u6807\u7684\u9519\u8bef\u4fe1\u606f\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 JavaScript \u4e2d\u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\uff0c\u5e76\u663e\u793a\u9519\u8bef\u4fe1\u606f\u548c\u56fe\u6807<\/strong><\/p>\n<p>\u60f3\u8981\u5728\u6587\u672c\u6846\u6821\u9a8c\u65f6\uff0c\u663e\u793a\u9519\u8bef\u4fe1\u606f\u5e76\u6dfb\u52a0\u56fe\u6807\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p>\u9996\u5148\uff0c\u521d\u59cb\u5316\u6587\u672c\u6846\uff0c\u68c0\u67e5\u5185\u5bb9\u662f\u5426\u4e3a\u7a7a\u3002\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u663e\u793a\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n<p>\u5f53\u7528\u6237\u8f93\u5165\u5185\u5bb9\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 onBlur \u4e8b\u4ef6\u3002\u5f53\u5149\u6807\u79bb\u5f00\u6587\u672c\u6846\u65f6\uff0c\u89e6\u53d1\u6821\u9a8c\u51fd\u6570\u3002<\/p>\n<p>\u5728\u6821\u9a8c\u51fd\u6570\u4e2d\uff0c\u83b7\u53d6\u8f93\u5165\u6846\u7684 value\uff0c\u5e76\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6216\u5176\u4ed6\u89c4\u5219\u8fdb\u884c\u6821\u9a8c\u3002<\/p>\n<p>\u5982\u679c\u6821\u9a8c\u5931\u8d25\uff0c\u5219\u663e\u793a\u9519\u8bef\u4fe1\u606f\u3002\u53ef\u4ee5\u4f7f\u7528 createElement \u65b9\u6cd5\u521b\u5efa\u9519\u8bef\u4fe1\u606f\u7684 DOM \u5143\u7d20\uff0c\u5e76\u5c06\u5176\u6dfb\u52a0\u5230\u6587\u672c\u6846\u4e0b\u65b9\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u53ef\u4ee5\u4f7f\u7528 innerHTML \u65b9\u6cd5\u5728\u9519\u8bef\u4fe1\u606f\u524d\u9762\u6dfb\u52a0\u56fe\u6807\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>const errorMessage = document.createElement(\"div\");\nerrorMessage.innerHTML = `&lt;img src=\"error-icon.png\" alt=\"Error\"&gt; 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