Execute script when HTML document is about to be unloaded?
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>The above is the detailed content of Execute script when HTML document is about to be unloaded?. For more information, please follow other related articles on the PHP Chinese website!
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