在當前窗口關閉前,檢測當前窗口是否關閉
<pre name="code" class="html"><pre name="code" class="html"><HTML><HEAD>
<script Language="JavaScript">
window.onbeforeunload=function(event){
alert("222"); //這裡IE9會執行,CHROME不會執行
// 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); //現在窗口未關閉,結果為false
aa.close();<span style="white-space:pre"> </span> //調用窗口關閉的方法
console.log("not in wait and val is :"+aa.closed); //此時aa.close正在調用過程中,結果為false
intervalVar = setInterval(showClose,100); }; //用循環檢測子窗口是否關閉,其實用setTimeout也是可以的,不過值要設得大一些
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都會執行,如果是關閉頁面的話只會執行onbeforeunload事件
值得注意的是,onunload在關閉頁面時不會運行,估計此函數為浏覽器內置事件,不能重新定義
在chrome中,如果刷新文檔的話,unloadform和onbeforeunload都會執行,關閉頁面的話,只會執行onbeforeunload,值得注意的是有注釋的那一行一直不會執行.
如果是window.open打開的子窗口的話,可以通過window.closed屬性檢測是否關閉
<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); //現在窗口未關閉,結果為false
aa.close(); //調用窗口關閉的方法
console.log("not in wait and val is :"+aa.closed); //此時aa.close正在調用過程中,結果為false
intervalVar = setInterval(showClose,100); }; //用循環檢測子窗口是否關閉,其實用setTimeout也是可以的,不過值要設得大一些
function unloadform(){ alert("2!"); }
</script>
</HEAD><BODY OnLoad="loadform()" OnUnload="unloadform()"> <a href="test.htm">調用</a>
</BODY></HTML>
父窗口關閉時會自動將window.open關閉的代碼
<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">調用</a>
</BODY></HTML>