We help IT Professionals succeed at work.
Get Started

how do I properly use onbeforeunload

Last Modified: 2012-05-09
I'm building my web application and we want to use the javascript window.onbeforeunload event to prompt users to save changes to any edits they have made to data. So far, this works quite well, HOWEVER, it is very unpredictable when we are using callbacks. For example, we have a grid control and when the grid control is in edit mode we want to be able to use the onbeforeunload event to tell the user to update there edit before navigating away; this works well until the user clicks a button that causes a callback (the callback will not affect the grid editing).

So the question is, how do you use the onbeforeunload to tell the difference between a callback and a redirect/postback?
Watch Question
Director, IT and Business Development
This problem has been solved!
Unlock 1 Answer and 1 Comment.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE