Is there any way to put global loading message while every pages postback in SharePoint 2013?

Question

In entire SharePoint site i want to put global loading message while every page postback, if user navigate from one page to another page it shows loading message until another page loads.

is it posible in SharePoint 2013?

any help would be appreciated,

Thanks

Answer 1

You need to work in an event that captures the unload, in a MasterPage script or Site UserCustomAction, or anywhere you want to add script to the Page.

<script>
  window.onunload = function() {
    console.info('We are going to another page');
  }
</script>

You might want to use onbeforeunload

Details:

http://javascript.info/[booktitle-raw]/load-and-unload-events