<!doctype html> | |
<title>Prompt on form submit</title> | |
<script> | |
addEventListener("beforeunload", | |
function(e) {e.preventDefault()}, | |
false); | |
</script> | |
<p>When clicking the button below, you should get a prompt asking if you want to unload the document</p> | |
<form method="get" action="next.html"> | |
<input type="submit" value="Click here"> | |
</form> |