Popup Blocker Detection 2

By Jeff Johnson on Dec 20, 2006

General

This is a simple, cross-browser method for testing for pop-up blockers. Most scripts test the return value of window.open and conclude that there is a blocker installed if the returned value resolves to false in a boolean statement. However, these scripts fail with browsers such as Opera (as of v9) that return a window object but disable it. This script properly handles this, as well as a null or undefined return type.

Notes

Created by: Jeff Johnson
Posted: December 20, 2006

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: detectPopupBlocker.js

function detectPopupBlocker() {
		var test = window.open(null,””,”width=100,height=100″);
		try {
				test.close();
				alert(“Pop-ups not blocked.”);
		} catch (e) {
				alert(“Pop-ups blocked.”);
		}
}

// Created by: Simon Willison
// http://simon.incutio.com/archive/2004/05/26/addLoadEvent
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != ‘function’) {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(detectPopupBlocker);

Head

Paste this code into the HEAD section of your HTML document.


<script type=”text/javascript” src=”detectPopupBlocker.js”></script>

General

Notes

Source Code

External file

Head

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