[removed] not working in chrome

Question

This is the code which i used for window.onbeforeunload......

Answer 1

Know I'm late to this, but was scratching my head why my custom beforeunload message wasn't working in Chrome and was reading this. So in case anyone else does the same, Chrome from Version 51 onwards no longer supports custom messages on beforeunload. Apparently it's because the feature has been misused by various scams. Instead you get a predefined Chrome message which may or may not suit your purposes. More details at:

https://developers.google.com/web/updates/2016/04/chrome-51-deprecations?hl=en#remove-custom-messages-in-onbeforeload-dialogs

Personally do not think the message they've chosen is a great one as it mentions leaving the site and one of the most common legitimate uses for onbeforeunload is for dirty flag processing/checking on a web form so it's not a great wording as a lot of the time the user will still be on your site, just have clicked the cancel or reload button by mistake.