How to send an AJAX PUT request on page unload without it cancelling?

Question

I\'m trying to send a PUT request on the unload event, however the request is always cancelled.

Answers here says it\'s not possible:How to per

Answer 1

All you need to do is make the ajax call synchronous. That way the browser will wait for the response before closing the window/tab and it will not be cancelled.

$(window).unload(function(){
    $.ajax({
        type: 'PUT',
        url: '/your_url.php',
        async:false, //IMPORTANT, the call will be synchronous
        data: {}
    }).done(function(data) {                
        console.log('complete');
    });
});