A webpage I'm accessing via Chrome, has a countdown timer which refreshes and updates the page/data every 10 minutes. I would like to edit the page locally to change this update frequency. Using the Developer Tools, I've found the variable which needs changing:
var updatefreq = 600;
However, it seems I'm unable to do any edits. Under Sources in Chrome Developer Tools, I can edit various bits of javascript code, however the page is in .aspx, and I can't seem to edit it. Is it possible to get around this?