Stop execution of Javascript function (client side) or tweak it

Question

I want to stop the execution of one single line from a site, so that the whole page is read by the browser except that single line. Or the browser may simply skip the execut

Answer 1

The answer depends on details which were not provided (The exact page and line of code would be best), but here's how you do it in general:

1. If the offending JS code does not fire right away (Fires after DOMContentLoaded), then you can use Greasemonkey to replace the offending code.   EG:

   var scriptNode          = document.createElement ("script");
   scriptNode.textContent  = "Your JS code here";
   document.head.appendChild (scriptNode);
   

   Done.

2. If the JS code fires immediately, then it gets more complicated.
   First, grab a copy of the script and make the desired change to it. Save this locally.

3. Is the offending script in a file or is it in the main page HTML (