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Execute script when HTML document is about to be unloaded?

PHPzforward: 2023-08-20 12:09:31650browse

The onbeforeunload event attribute is triggered when the document is ready to be unloaded.

Example

You can try running the following code to implement the onbeforeunload attribute −

<!DOCTYPE html>
<html>
   <body onbeforeunload = "return display()">
      <p>Close this window or press F5.</p>
      <script>
         function display() {
            return "Wanna stay here or leave?";
         }
      </script>
   </body>
</html>

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Execute script when HTML document is about to be unloaded?

Example

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