<pre name="code" class="html"><pre name="code" class="html"><HTML><HEAD> 
<script Language="JavaScript"> 
window.onbeforeunload=function(event){ 
alert("222"); //這里IE9會(huì)執(zhí)行,CHROME不會(huì)執(zhí)行 
// if(event.clientX>document.body.clientWidth && event.clientY<0||event.altKey){ //如果是刷新,則不提示 
RETURN "確定關(guān)閉窗口?"; 
// } 
} 
var aa ; 
var intervalVar; 
function showClose(){ 
console.log(" wait and val is :"+aa.closed); 
clearInterval(intervalVar); 
} 
function loadform(){ 
aa=window.open('foo.html', 'windowName',"width=200,height=200,scrollbars=no"); 
console.log("check close before op and val is :"+aa.closed); //現(xiàn)在窗口未關(guān)閉,結(jié)果為false 
aa.close();<span style="white-space:pre"> </span> //調(diào)用窗口關(guān)閉的方法 
console.log("not in wait and val is :"+aa.closed); //此時(shí)aa.close正在調(diào)用過(guò)程中,結(jié)果為false 
intervalVar = setInterval(showClose,100); }; //用循環(huán)檢測(cè)子窗口是否關(guān)閉,其實(shí)用setTimeout也是可以的,不過(guò)值要設(shè)得大一些 
function unloadform(){ alert("2!"); } 
</script> 
</HEAD><BODY OnLoad="loadform()" OnUnload="unloadform()"> 
</BODY></HTML>

在ie9中,如果刷新文檔的話,unloadform和onbeforeunload都會(huì)執(zhí)行,如果是關(guān)閉頁(yè)面的話只會(huì)執(zhí)行onbeforeunload事件

值得注意的是,onunload在關(guān)閉頁(yè)面時(shí)不會(huì)運(yùn)行,估計(jì)此函數(shù)為瀏覽器內(nèi)置事件,不能重新定義

在chrome中,如果刷新文檔的話,unloadform和onbeforeunload都會(huì)執(zhí)行,關(guān)閉頁(yè)面的話,只會(huì)執(zhí)行onbeforeunload,值得注意的是有注釋的那一行一直不會(huì)執(zhí)行.

如果是window.open打開(kāi)的子窗口的話,可以通過(guò)window.closed屬性檢測(cè)是否關(guān)閉

<HTML><HEAD> 
<script Language="JavaScript"> 
var aa ; 
var intervalVar; 
function showClose(){ 
console.log(" wait and val is :"+aa.closed); 
clearInterval(intervalVar); 
} 
function loadform(){ 
aa=window.open('foo.html', 'windowName',"width=200,height=200,scrollbars=no"); 
console.log("check close before op and val is :"+aa.closed); //現(xiàn)在窗口未關(guān)閉,結(jié)果為false 
aa.close(); //調(diào)用窗口關(guān)閉的方法 
console.log("not in wait and val is :"+aa.closed); //此時(shí)aa.close正在調(diào)用過(guò)程中,結(jié)果為false 
intervalVar = setInterval(showClose,100); }; //用循環(huán)檢測(cè)子窗口是否關(guān)閉,其實(shí)用setTimeout也是可以的,不過(guò)值要設(shè)得大一些 
function unloadform(){ alert("2!"); } 
</script> 
</HEAD><BODY OnLoad="loadform()" OnUnload="unloadform()"> <a href="test.htm">調(diào)用</a> 
</BODY></HTML>

父窗口關(guān)閉時(shí)會(huì)自動(dòng)將window.open關(guān)閉的代碼

<HTML><HEAD> 
<script Language="JavaScript"> 
var aa ; 
var intervalVar; 
window.onbeforeunload=function(event){ 
aa.close(); 
return "hello"; 
} 
function loadform(){ 
aa=window.open('test.htm', 'windowName',"width=200,height=200,scrollbars=no"); 
}; 
function unloadform(){ alert("2!"); } 
</script> 
</HEAD><BODY OnLoad="loadform()" OnUnload="unloadform()"> <a href="test.htm">調(diào)用</a> 
</BODY></HTML>

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