所有涉及弹窗口的页面均调用这个脚本文件：showModalDialog.js
var has_showModalDialog = !!window.showModalDialog;//定义一个全局变量判定是否有原生showModalDialog方法 if(!has_showModalDialog &&!!(window.opener)){ window.οnbefοreunlοad=function(){ window.opener.hasOpenWindow = false; //弹窗关闭时告诉opener：它子窗口已经关闭 } } //定义window.showModalDialog如果它不存在 if(window.showModalDialog == undefined){ window.showModalDialog = function(url,mixedVar,features){ if(window.hasOpenWindow){ alert("您已经打开了一个窗口！请先处理它");//避免多次点击会弹出多个窗口 window.myNewWindow.focus(); } window.hasOpenWindow = true; if(mixedVar) var mixedVar = mixedVar; //因window.showmodaldialog 与 window.open 参数不一样，所以封装的时候用正则去格式化一下参数 if(features) var features = features.replace(/(dialog)|(px)/ig,"").replace(/;/g,',').replace(/\:/g,"="); //window.open("Sample.htm",null,"height=200,width=400,status=yes,toolbar=no,menubar=no"); //window.showModalDialog("modal.htm",obj,"dialogWidth=200px;dialogHeight=100px"); var left = (window.screen.width - parseInt(features.match(/width[\s]*=[\s]*([\d]+)/i)[1]))/2; var top = (window.screen.height - parseInt(features.match(/height[\s]*=[\s]*([\d]+)/i)[1]))/2; window.myNewWindow = window.open(url,"_blank",features); } }调用父类方法做出修改：
try { window.dialogArguments.父类方法(参数); window.close(); } catch (e) { window.opener.父类方法(参数); window.close(); }