window.onbeforeunload（）在Firefox浏览器上不起作用关闭

Question

window.onbeforeunload() is working on browser close of IE and Chrome, but it is not working in case of Firefox(Works only on tab close) browser close.

My Requirement:: I am capturing mobile number, email id, Firstname and lastName etc.. using document.getelementById() and calling a service upon closing browser or tab.

Problem : Service is getting called in case of IE and GC(tab/browser close) but not in case of FireFox.

Any help is substantially appreciated......

Answer 1

1. Check if you are returning a string or not.

The function should assign a string value to the returnValue property of the Event object and return the same string.

2. It is advised to use onunload instead of onbeforeunload as the latter is often reported to work inconsistently and Mozilla's docs also indicate variation in implementation of the standard the event by browsers. Although,IMO unload events are not really reliable and one should ignore them when can.