js before unload
window.addEventListener('beforeunload', (event) => {
// Cancel the event as stated by the standard.
event.preventDefault();
// Chrome requires returnValue to be set.
event.returnValue = '';
});Are there any code examples left?
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<script type="text/javascript"> window.addEventListener('beforeunload', function (e) { e.preventDefault(); e.returnValue = ''; }); </script>
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