eboyhaining 2013-08-08
代码如下:
<!DOCTYPE HTML> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Js制作简单弹出层DIV在页面居中 中间显示 遮罩 方法</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*****/ .orderMsg{ 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;} .orderMsg dl{ overflow:hidden; padding:20px; margin:0;} .orderMsg dl dt{ line-height:30px;} .orderMsg dl dd{ line-height:25px; height:25px; padding-left:10px; margin:0;} .orderMsg dl dd label{ padding-left:5px;} .orderMsg dl dd.cBtn{ width:102px; height:28px; background:url(../images/member/chooseBtn.gif) no-repeat; margin-top:10px; padding:0;} .orderMsg dl dd.cBtn a{ display:block; text-align:center;} .orderMsg dl dd.cBtn a:link,.orderMsg dl dd.cBtn a:visited{ color:#000;} .orderMsg dl dd.lBtn{ float:left; display:inline; margin-left:100px;} .orderMsg 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="orderMsg" class="orderMsg" 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 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 */ 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(){ //iframe var 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.$(openID).onclick = function(){ if(window.ActiveXObject){ //ie6 if(!window.XMLHttpRequest){ document.body.style.cssText = "_background-image: url(about:blank);_background-attachment: fixed;"; } } that.createIframe(); that.createShadowDiv(); _CalF.$(conID).style.display = "block"; } document.getElementById(closeID).onclick = function(){ _CalF.$(conID).style.display = "none"; that.removeDiv(); } } } var bt = new popup("bt","orderMsg","close"); </script> </body> </html>