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weizman/cancelable-beforeunload-event-demo.js

Last active January 30, 2019 22:19
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cancelable `beforeunload` event example
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cancelable-beforeunload-event-demo.js
// by https://developer.mozilla.org/en-US/docs/Web/Events/beforeunload#Example
window.addEventListener("beforeunload", function (event) {
event.preventDefault(); // Cancel the event as stated by the standard.
event.returnValue = ''; // Chrome requires returnValue to be set.
});
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