Js popup when leaving page but not when submitting form

Question

I use this code on my website to display a warning message in a popup when a user trie to leave the page:

Answer 1

I would suggest capturing the submit event for the form and then either removing the confirmExit function from your onbeforeunload event binding or setting a flag to indicate that the page can be submitted. For example:

<script type="text/javascript">

    // Define flag to determine if the page can be left without confirmation
    var safeToLeave = false;

    // Handle user leaving the page
    function handleExit () {
        if (!safeToLeave) {
            return 'Si vous quittez ou actualisez la page, vous perdrez votre tutoriel';
        }
    }

    // Handle the user submitting the page form
    function handleSubmission() {
        safeToLeave = true;
    }

    // Bind to on evemts
    window.onbeforeunload = handleExit;
    document.getElementById('#my-form').onsubmit = handleSubmission;

</script>

I'd recommend you consider using the addEventListener method for binding events in general, however given your example I've tried to keep my answer consistent.