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javascript实现浮动窗口的方法：首先创建HTML文件；然后通过“function showFAd(){…}”方法打开浮动广告；最后通过“function showFloat(){…}”方法实现打开浮动窗口即可。
本文操作环境：windows7系统、javascript1.8.5版、Dell G3电脑。
javascript怎么实现浮动窗口？
具体如下：
HTML部分：
<!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=utf-8" /> <title>无标题文档</title> <style type="text/css"> *{ margin:0; padding:0;} a img{ border:0;} </style> </head> <body> <div style="height:2000px; background:#ccc; display:none;"> </div> <!--div id="floatAd" style=" position:fixed !important; position:absolute; _top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight)); z-index: 2147483647; left: 50%; margin-left: -240px !important; top: 50%; margin-top: -210px !important; background:url(images/onlineSay.jpg) no-repeat; width:487px; height:350px; cursor:pointer;"> <div onclick="closeFAd();" style=" width:26px; height:26px; float:right;"></div> <div style="width:487px; height:320px; float:right;" onclick="open_online();"></div> </div> <div id="floatSide" style=" width:141px; height:579px; position:fixed !important; position:absolute; _top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight)); z-index: 99999; right:0; top:6%; background:url(images/onlineTel.gif);cursor:pointer;" onclick="open_online();></div--> </body> </html> <script type="text/javascript" src="online.js"></script>
JS部分：
// JavaScript Document //浮动广告图片 var floatAdImg = "images/onlineSay.jpg"; //浮动侧栏图片 var floatSideImg = "images/onlineTel.gif"; //打开在线沟通 function open_online() { window.open('http://p.qiao.baidu.com//im/index?siteid=7342332&ucid=7601325'); } //浮动广告 document.writeln("<div id="floatAd" style=" position:fixed !important; position:absolute; _top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight)); z-index: 2147483647; left: 50%; margin-left: -240px !important; top: 50%; margin-top: -210px !important; background:url("+floatAdImg+") no-repeat; width:487px; height:350px; cursor:pointer; display:none; ">"); document.writeln("<div onclick="closeFAd();" style=" width:26px; height:26px; float:right;"></div>"); document.writeln("<div style="width:487px; height:320px; float:right;" onclick="open_online();"></div>"); document.writeln("</div>"); //浮动侧栏 document.writeln("<div style=" width:141px; height:579px; position:fixed !important; position:absolute; _top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight)); z-index: 99999; right:0; top:6%; background:url("+floatSideImg+");cursor:pointer;" onclick="open_online();"></div>"); //关闭浮动广告 function closeFAd() { document.getElementById('floatAd').style.display = 'none'; } //打开浮动广告 function showFAd() { document.getElementById('floatAd').style.display = 'block'; } //打开浮动窗口 function showFloat() { document.getElementById('floatAd').style.display = 'block'; } //打开窗口 20 秒仅执行一次 setTimeout(showFAd,20000); //每个 30 秒执行一次 setInterval(showFloat,30000);
效果图如下：
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