javascript 捕捉浏览器关闭事件

javascript 捕捉浏览器关闭事件

http://arron-li.iteye.com/blog/358963

   1. var s="close";  
   2. function window.onunload(){  
   3.      
   4.    if(s=="fresh")  
   5.       if(window.screenLeft>10000)  
   6.       {  
   7.         alert('close');  
   8.         //logout();  
   9.           }  
  10.           else{  
  11.           alert('fresh');  
  12.         }  
  13.    else{  
  14.       alert('close');  
  15.      // logout();  
  16.       }  
  17. }  
  18. function window.onbeforeunload(){  
  19.    s="fresh";  
  20. }  

http://gisman.bokee.com/5826035.html