How to Confirm before Leaving Page in Javascript

2022-07-22

62 words - 1 min read

You can implement a function to be called before the user leaves a page with Javascript as follows:

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window.onbeforeunload = function(e) {
  return "Do you want to exit this page?";
};

This is a typically solution for when you want the user to confirm their changes are saved before allowing them to close the current page in editing tools.