Firefox Support Forum

Hello,

I have a web page that prints a document, and then redirects back to the main page. This website has always worked in every browser, and now in Firefox 84.0.2 it no longer redirects.

What changed in Firefox, and how do I get it redirecting again?

Here is a snippet of the code in question:

<script type='text/javascript'>

    var interval = setInterval(function() {
         if(document.readyState === 'complete') {
              clearInterval(interval);
              window.print();
         }
    }, 100);
    
    window.onbeforeprint = function() {
         window.location = 'https://www.mozilla.org';
    }

</script>