How to display onbeforeunload dialog when appropriate?
How can I override the OnBeforeUnload dialog and replace it with my own?
onBeforeUnload event to create this? Javascript onbeforeunload return value After onbeforeunload event How to know return of window.onbeforeunload Javascript: Onbeforeunload Javascript: onbeforeunload is not working Javascript onbeforeunload function AJAX and onbeforeunload event window.onbeforeunload not working How can I get the Return value of onBeforeUnload Using onbeforeunload without dialog? How to know the user response in window.onbeforeunload onbeforeunload custom dialog message not working how to run script onbeforeunload Javascript 'onbeforeunload()' not working with a function call jQuery.each does not work in window.onbeforeunload function onbeforeunload not working at all onbeforeunload event is not working when user not click inside the body of page JavaScript + onbeforeunload How to disable dialog alert and close the website in window.onbeforeunload? Confirm dialog onbeforeunload how to use window.onbeforeunload? onbeforeunload not working window.onbeforeunload with a form onbeforeunload in javascript Window.OnBeforeUnload Override onbeforeunload (javascript) window.onbeforeunload error Javascript and onbeforeunload?