Java-Scripts.net

Internal Popup Blocker Check

Ensure your critical windows are seen. This utility attempts to launch a popup and immediately verifies if the browser successfully opened it. If blocked, it displays a fallback message or instruction.

Click the button below to test your browser's popup settings.

Copy the Script

<script>
function checkPopup() {
  var testWindow = window.open("", "Test", "width=1,height=1,left=5000");
  
  if (!testWindow || testWindow.closed || typeof testWindow.closed == 'undefined') {
     alert("Popups are blocked! Please allow popups for this site.");
  } else {
     // Cleanup: Close the test window if it opened
     testWindow.close();
     alert("Popups are allowed.");
  }
}
</script>

Frequently Asked Questions

Most modern browsers automatically block any window.open() call that is not directly triggered by a user action (like a click).

No. You cannot force a window open against browser settings. However, you can use this script to detect the block and politely ask the user to allow popups for your site.

Yes. The script checks if the returned window object is null or undefined, which is the standard behavior when a popup is blocked.