转自 https://zhidao.baidu.com/question/747776028293107892.html
如果是模态窗口弹出 <form name="form1"> <input type="text" name="fag1"> <input type="text" name="fag2"> </form> function shw(){ var url="open.html"; //----------方法一--start------- var obj=document.form1; //指定页面对象 var returnValue=window.showModalDialog(url ,obj,‘dialogHeight:550px;dialogWidth:500px;center:yes‘); //方法返回值 //----------方法一--end------- alert(returnValue); } 如果是非模态窗口弹出,那么 <script type="text/javascript"> //弹出窗口 function openwin(url,width,height){ var l=window.screen.width ; var w= window.screen.height; var al=(l-width)/2; var aw=(w-height)/2; var OpenWindow=window.open(url,"弹出窗口","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width="+width+",height="+height+",top="+aw+",left="+al+""); OpenWindow.focus(); if(OpenWindow!=null){ //弹出窗口关闭事件 //if(window.attachEvent) OpenWindow.attachEvent("onbeforeunload", quickOut); if(window.attachEvent) OpenWindow.attachEvent("onunload", quickOut); } } //关闭触发方法 function quickOut() { alert("窗口已关闭"); } </script> <input type="button" value="ok" onclick="openwin(‘open.html‘,‘600‘,‘500‘)"> <input type="text" name="txt0" id="txt0"> 注意:firefox这里一定要写ID属性,不然取不到值