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慢慢展开再慢慢收起的javascript广告效果

时间：2021-07-01 10:21:17 帮助过：12人阅读

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>脚本之家效果代码</title> <style> *{margin:0;padding:0;} body {height:2000px;} #menu { width:220px; height:420px; position:absolute; z-index:1000; background:url(/upload/20080421090108362.gif) repeat-x top left; } #menu_h { float:right; } #menu_h img { cursor:pointer; } #menu_c { width:188px; height:398px; border:1px solid #666; background:#ecf6f5; margin:12px 0 0 5px; } #menu_c h2 { text-align:center; } </style> </head> <body> <script type="text/javascript"> var time = 300; var h = 0; function addCount() { if(time>0) { time--; h = h+5; } else { return; } if(h>300) //高度 { return; } document.getElementById("ads").style.display = ""; document.getElementById("ads").style.height = h+"px"; setTimeout("addCount()",30); } window.onload = function showAds() { addCount(); setTimeout("noneAds()",7000); //停留时间自己调了 } var T = 300; var N = 300; //高度 function noneAds() { if(T>0) { T--; N = N-5; } else { return; } if(N<0) { document.getElementById("ads").style.display = "none"; return; } document.getElementById("ads").style.height = N+"px"; setTimeout("noneAds()",30); } </script> </body> </html>
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慢慢展开再慢慢收起的javascript广告效果

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