I am trying to override window.close() Method in JavaScript. Here is my code:

 (function () {
    var _close = window.close;                  
    window.close = function () {
        window.opener.alert("test");
        _close();                             
    };
})();

I am trying to bind this code to new window and execute the inner code when the new window is closed. Is is possible to override window.close like this?

I am trying to override window.close() Method in JavaScript. Here is my code:

 (function () {
    var _close = window.close;                  
    window.close = function () {
        window.opener.alert("test");
        _close();                             
    };
})();

I am trying to bind this code to new window and execute the inner code when the new window is closed. Is is possible to override window.close like this?

• javascript
• jquery
• jquery-events

• 6 Have you tried it to see what happens? – Lloyd Commented Aug 22, 2013 at 12:53
• yes, nothing happens when I close the new window. – Rajesh Dhiman Commented Aug 22, 2013 at 12:55
• did you look at window.unload? – fred02138 Commented Aug 22, 2013 at 12:56
• 6 If you could do this, it would be possible to create windows that could never be closed. Malware sites did this, so browsers don't allow it. – Barmar Commented Aug 22, 2013 at 12:57
• 4 Oh yes, please give me more popups when I try to close your advertising page that I didn't ask for in the first place. – crush Commented Aug 22, 2013 at 12:57

1 Answer 1

Try this

You can use window.onbeforeunload event to call any function However, alert,prompt,confirm boxes are not allowed. you can return any string, to show any message.

//var _close = window.onbeforeunload;  
window.onbeforeunload = function () {
   // window.opener.alert("test");
   //_close();        
   return callBack();
};
function callBack()
{
    return "Testing";
}

If you suppose to close any other child window

You can try this

var k = window.open("url");
k.onbeforeunload = callBack;