{"id":53533,"date":"2024-12-03T10:25:33","date_gmt":"2024-12-03T02:25:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53533\/"},"modified":"2024-12-03T10:25:33","modified_gmt":"2024-12-03T02:25:33","slug":"javascript-%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e5%8f%b3%e4%be%a7%e6%b5%ae%e5%8a%a8%e5%b9%b6%e9%9a%8f%e7%9d%80%e9%bc%a0%e6%a0%87%e6%bb%9a%e5%8a%a8%e7%a7%bb%e5%8a%a8%e7%9a%84%e6%95%88%e6%9e%9c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53533\/","title":{"rendered":"JavaScript \u5982\u4f55\u5b9e\u73b0\u53f3\u4fa7\u6d6e\u52a8\u5e76\u968f\u7740\u9f20\u6807\u6eda\u52a8\u79fb\u52a8\u7684\u6548\u679c\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>JavaScript \u5982\u4f55\u5b9e\u73b0\u53f3\u4fa7\u6d6e\u52a8\u5e76\u968f\u7740\u9f20\u6807\u6eda\u52a8\u79fb\u52a8\u7684\u6548\u679c\uff1f<\/h1>\n<p>\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, 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jquery\uff0c\u53ef\u4ee5\u4f7f\u7528\u73b0\u6210\u7684 scroll-follow \u63d2\u4ef6\u3002\u5176\u5b98\u65b9\u7f51\u7ad9\u63d0\u4f9b\u4e86 [\u793a\u4f8b](http:\/\/kitchen.net-perspective.com\/sf-example-1.html)\u3002<\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528\u539f\u751f javascript<\/strong><\/p>\n<pre>\/\/ \u83b7\u53d6\u8981\u56fa\u5b9a\u7684\u5143\u7d20\nconst fixedElement = document.querySelector('.fixed-element');\n\n\/\/ \u76d1\u542c\u9f20\u6807\u6eda\u52a8\u4e8b\u4ef6\nwindow.addEventListener('scroll', function() {\n  \/\/ \u83b7\u53d6\u5f53\u524d\u6eda\u52a8\u4f4d\u7f6e\n  const scrollTop = window.pageYOffset;\n\n  \/\/ \u8bbe\u7f6e\u5143\u7d20\u7684 top \u4f4d\u7f6e\u4f7f\u5176\u4fdd\u6301\u9876\u90e8\u5bf9\u9f50\n  fixedElement.style.top = scrollTop + 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