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Js弹出DIV遮罩层并在页面居中显示效果

栏目：特效时间：2014-03-11 17:55:38

Js弹出DIV遮罩层并在页面居中显示效果，这两天要用到正好练练手,比想象中碰到的问题要多,比如: ie6背景透明 ie6居中显示还有对js对象的理解

openID=显示按钮,conID=需要显示的div,closeID=关闭按钮

解决了:
1.可以遮挡ie6下的select元素但是在ie6下div没有透明度
2.弹出的div可以一直在浏览器屏幕中间显示

问题:
1.目前不支持.class 只支持#id
2.需要显示的div需要自己设置css
3.在ie6下需要设置css
例如div {_position: absolute;_top: expression(documentElement.scrollTop + 340 + "px"); }
4.ie6下背景div没有透明度这里我上网搜到的结果都不能解决如果您有方法请给我留言

演示代码：

<!DOCTYPE HTML><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Js居中弹出遮罩层效果_wfuyu.COM</title><style type="text/css">*{margin:0;padding:0;}#bt{border: 2px solid #000;background-color: #ccc;cursor: pointer;padding: 2px 5px;}/****订单弹出框*****/.VeryhuoCOM{ position:fixed;_position: absolute;_top: expression(documentElement.scrollTop + 340 + "px"); background:#fff; border:1px solid #939395; width:500px; height:340px;top: 50%;left: 50%;margin: -200px 0 0 -250px; overflow:hidden; z-index:99999; font-size:14px; color:#000; display:none;}.VeryhuoCOM dl{ overflow:hidden; padding:20px; margin:0;}.VeryhuoCOM dl dt{ line-height:30px;}.VeryhuoCOM dl dd{ line-height:25px; height:25px; padding-left:10px; margin:0;}.VeryhuoCOM dl dd label{ padding-left:5px;}.VeryhuoCOM dl dd.cBtn{ width:102px; height:28px; background:url(../images/member/chooseBtn.gif) no-repeat; margin-top:10px; padding:0;}.VeryhuoCOM dl dd.cBtn a{ display:block; text-align:center;}.VeryhuoCOM dl dd.cBtn a:link,.VeryhuoCOM dl dd.cBtn a:visited{ color:#000;}.VeryhuoCOM dl dd.lBtn{ float:left; display:inline; margin-left:100px;}.VeryhuoCOM dl dd.rBtn{ float:left; display:inline; margin-left:10px;}</style></head><body><a id="bt">点击弹出div</a><div style="height:1000px;">sdfdsf<select><option>Volvo</option><option selected="selected">Saab</option><option>Mercedes</option><option>Audi</option></select></div><a id="bt">点击弹出div</a><div style="height:1000px;">sdfdsf<select><option>Volvo</option><option selected="selected">Saab</option><option>Mercedes</option><option>Audi</option></select></div><div id="VeryhuoCOM" class="VeryhuoCOM" style="display: none;"><dl><dt>请您告知我们取消订单的原因，以便我们改进。非常感谢!</dt><dd><input type="radio" name="reason" id="reason1"><label for="reason1">改变主意,现在不想买了</label></dd><dd><input type="radio" name="reason" id="reason2"><label for="reason2">刚才信息填错了,要重新下单</label></dd><dd><input type="radio" name="reason" id="reason3"><label for="reason3">先取消,再更换或添加新商品</label></dd><dd><input type="radio" name="reason" id="reason4"><label for="reason4">网银,信用卡等支付有问题</label></dd><dd><input type="radio" name="reason" id="reason5"><label for="reason5">等待时间过长,不耐烦了</label></dd><dd><input type="radio" name="reason" id="reason6"><label for="reason6">商品价格较贵</label></dd><dd><input type="radio" name="reason" id="reason7"><label for="reason7">出现商品缺货情况</label></dd><dd><input type="radio" name="reason" id="reason8"><label for="reason8">其它的原因</label></dd><dd><input type="radio" disabled="disabled"><label>72小时到期自动取消(不可选)</label></dd><dd class="cBtn lBtn"><a href="#">选好了</a></dd><dd class="cBtn rBtn"><a href="#" onclick="" id="close">点击取消</a></dd></dl></div><script type="text/javascript">/*openID=显示按钮,conID=需要显示的div,closeID=关闭按钮Downloads By http://www.wfuyu.com解决了:1.可以遮挡ie6下的select元素但是在ie6下div没有透明度2.弹出的div可以一直在浏览器屏幕中间显示问题:1.目前不支持.class 只支持#id2.需要显示的div需要自己设置css3.在ie6下需要设置css例如div {_position: absolute;_top: expression(documentElement.scrollTop + 340 + "px"); }4.ie6下背景div没有透明度这里我上网搜到的结果都不能解决如果您有方法请给我留言*/var _CalF = { //便捷方法$ : function(id){return document.getElementById(id)},create : function(id){return document.createElement(id)},append : function(id){return document.body.appendChild(id)},remove : function(id){return document.body.removeChild(id)}}function popup(openID,conID,closeID){this.onclick(openID,conID,closeID);}popup.prototype = {cssStyle : "width:100%;position:absolute;left:0;top:0;filter:alpha(opacity = 50);opacity:0.5;border:0;overflow:auto;",createShadowDiv : function(){ //背景遮罩var shadowDiv = _CalF.create("div");shadowDiv.id = "shadowDiv";shadowDiv.style.cssText = this.cssStyle;shadowDiv.style.height = document.body.scrollHeight + "px";shadowDiv.style.backgroundColor = "#000"shadowDiv.style.zindex = 100;_CalF.append(shadowDiv);},createIframe : function(){ //iframevar iframe = _CalF.create("iframe");iframe.id = "shadowIframe";iframe.style.cssText = this.cssStyle;iframe.style.height = document.body.scrollHeight + "px";iframe.style.zindex = 99;_CalF.append(iframe);},removeDiv : function(){_CalF.remove(_CalF.$("shadowDiv"));_CalF.remove(_CalF.$("shadowIframe"));},onclick : function(openID,conID,closeID){var that = this;_CalF.$(openID).onclick = function(){if(window.ActiveXObject){ //ie6if(!window.XMLHttpRequest){document.body.style.cssText = "_background-image: url(about:blank);_background-attachment: fixed;";}}that.createIframe();that.createShadowDiv();_CalF.$(conID).style.display = "block";}document.getElementById(closeID).onclick = function(){_CalF.$(conID).style.display = "none";that.removeDiv();}}}var bt = new popup("bt","VeryhuoCOM","close");</script></body></html> <div style="text-align:center;margin:30px 0 0 0;"><hr style="color:#999;height:1px;">如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.wfuyu.com/' target='_blank'>http://www.wfuyu.com/</a></div>
提示：可修改后代码再运行!

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