本文实例讲述了jQuery实现的模拟弹出窗口功能。分享给大家供大家参考，具体如下：

//初始化文档 $(document).ready(); //----------------弹出DIV仿模态窗口开始---------------- var divW; //DIV宽度 var divH; //DIV高度 var clientH; //浏览器高度 var clientW; //浏览器宽度 var divTitle; //DIV标题 var pageUrl; //DIV中加载的页面 var div_X; //DIV横坐标 var div_Y; //DIV纵坐标 function DivWindowOpen(divWidth,divHeight,title,url){ divW = divWidth; //DIV宽度 divH = divHeight; //DIV高度 divTitle = title; //DIV高度 pageUrl = url; //DIV中加载的页面UR lockScreen(); //锁定背景 divOpen(); $("#divTitle").append(divTitle); $("#divContent").load(pageUrl); //交换X图片 $("#x").hover( function(){ $(this).attr("src","images/Close-2.gif"); }, function(){ $(this).attr("src","images/Close-1.gif"); } ); //关闭DIV窗口 $("#x").click( function(){ clearDivWindow(); clearLockScreen(); } ); } //返回弹出的DIV的坐标 function divOpen(){ var minTop = 80; //弹出的DIV记顶部的最小距离 if($("#divWindow").length == 0){ clientH = $(window).height(); //浏览器高度 clientW = $(window).width(); //浏览器宽度 div_X = (clientW - divW)/2; //DIV横坐标 div_Y = (clientH - divH)/2; //DIV纵坐标 div_X += window.document.documentElement.scrollLeft; //DIV显示的实际横坐标 div_Y += window.document.documentElement.scrollTop; //DIV显示的实际纵坐标 if(div_Y < minTop){ div_Y = minTop; } $("body").append("<div id='divWindow'><div id='divTitle'><img src='images/Close-1.gif' id='x' /></div><div id='divContent'>载入中</div></div>"); //增加DIV //divWindow的样式 $("#divWindow").css("position","absolute"); $("#divWindow").css("z-index","200"); $("#divWindow").css("left",(div_X + "px")); //定位DIV的横坐标 $("#divWindow").css("top",(div_Y + "px")); //定位DIV的纵坐标 $("#divWindow").css("opacity","0.9"); $("#divWindow").width(divW); $("#divWindow").height(divH); $("#divWindow").css("background-color","#FFFFFF"); $("#divWindow").css("border","solid 1px #333333"); //divTitle的样式 $("#divTitle").css("height","20px"); $("#divTitle").css("line-height","20px"); $("#divTitle").css("background-color","#333333"); $("#divTitle").css("padding","3px 5px 1px 5px"); $("#divTitle").css("color","#FFFFFF"); $("#divTitle").css("font-weight","bold"); //x的样式 $("#x").css("float","right"); $("#x").css("cursor","pointer"); //divContent的样式 $("#divContent").css("padding","10px"); } else{ clientH = $(window).height(); //浏览器高度 clientW = $(window).width(); //浏览器宽度 div_X = (clientW - divW)/2; //DIV横坐标 div_Y = (clientH - divH)/2; //DIV纵坐标 div_X += window.document.documentElement.scrollLeft; //DIV显示的实际横坐标 div_Y += window.document.documentElement.scrollTop; //DIV显示的实际纵坐标 if(div_Y < minTop){ div_Y = minTop; } $("#divWindow").css("left",(div_X + "px")); //定位DIV的横坐标 $("#divWindow").css("top",(div_Y + "px")); //定位DIV的纵坐标 } } //锁定背景屏幕 function lockScreen(){ if($("#divLock").length == 0){ //判断DIV是否存在 clientH = $(window).height(); //浏览器高度 clientW = $(window).width(); //浏览器宽度 //var docH = $("body").height(); //网页高度 //var docW = $("body").width(); //网页宽度 //var bgW = clientW > docW ? clientW : docW; //取有效宽 //var bgH = clientH > docH ? clientH : docH; //取有效高 $("body").append("<div id='divLock'></div>") //增加DIV $("#divLock").height(clientH); $("#divLock").width(clientW); $("#divLock").css("display","block"); $("#divLock").css("background-color","#000000"); $("#divLock").css("position","fixed"); $("#divLock").css("z-index","100"); $("#divLock").css("top","0px"); $("#divLock").css("left","0px"); $("#divLock").css("opacity","0.5"); } else{ clientH = $(window).height(); //浏览器高度 clientW = $(window).width(); //浏览器宽度 $("#divLock").height(clientH); $("#divLock").width(clientW); } } //清除背景锁定 function clearLockScreen(){ $("#divLock").remove(); } //清除DIV窗口 function clearDivWindow(){ $("#divWindow").remove(); } //窗口大小改变时 $(window).resize( function(){ if($("#divLock").length != 0){ lockScreen(); } if($("#divWindow").length != 0){ divOpen(); } } ); //----------------弹出DIV仿模态窗口结束---------------- //改变风格 function ChangeStyle(styleName){ skinName = styleName; //SetCookie("Skin", skinName); alert(styleName); window.location.reload(); }

希望本文所述对大家jQuery程序设计有所帮助。