How to detect unsaved changes on a form

[Johannes Mweli]

Hi ServiceNow Community Developers,

Do you guys know if there is a way to detect if there are unsaved changes on a form before you dynamically navigate away from it? For instance I have a client script that opens up a UI page and some processing happens in that page. The problem I am running into is that when processing is done on the UI page and control returns back to the record I was at before invoking the UI page, the form reloads and all the fields that I had changed / populated before navigating away from the record get's lost. I have to redo them. What would be ideal is that before the client script invokes a UI page it first checks if there are unsaved changes and don't open a ui page if there are, that way nothing gets overridden when I return back from the UI page and reloads the form. 

Please advise.

Thanks,

Johannes

[Allen Andreas · Accepted solution]

Hi,

You can place this at the top of your script for invoking the UI Page to give the option to stop it if the form hasn't been saved yet:

 if(g_form.modified){
    answer = confirm("Values on the form have changed.\nYou will lose any unsaved changes if you continue.");
    if (answer == false) {
      return false;
    }
  }

Please mark reply as Helpful/Correct, if applicable. Thanks!

[Johannes Mweli]

That worked! Thank you very much Allen

[Allen Andreas]

You're welcome!

Please also mark as Helpful if it was.

Take care!