To send an ajax request, you can utilize the following code snippet:
window.onbeforeunload = function(){
////make ajax request
}
Alternatively, you can prompt the user with a confirm box before proceeding:
function showalert() {
if (!confirm('Are you sure you want to exit without saving changes?')) {
////make ajax request
}
else {return true;}
}
window.onbeforeunload = function(){ showalert }
For instance, when leaving a page while working on something important, like answering questions on Stack Overflow, it's crucial to prevent accidental exits.