[ASP ASP.NET PHP JSP CGI]Logging out a user when they close the window

[mendhak]

**NOTE: This codebank submission is outdated and no longer works with modern browsers**

A common question on the forums is, if the user closes the browser window, how can they be logged out immediately?

Here's how. Have the following javascript in your window

<script language="JavaScript">


 function initUnload()
  {
     var top=self.screenTop;
     if (top>9000) { 
         var settings = 'width=1,height=1,left=1,top=1,toolbar=0,scrollbars=0,status=0'
         window.open("logout.html?close=true","logoutWindow",settings);  
      } else {//:ehh:
         
      }
  }


  window.onunload = initUnload;
</script>

The part in red, logout.html, can be replaced with any server-side scripted page in ASP/PHP/ASP.NET/WhateverFloatsYourBoat. That page should abandon/clear your sessions.

Keywords:
Session
Logout
Window
Close
logging out
user