I remember several years ago that I was able to save a remote JavaScript file from a website onto my local in Chrome Debugger, make a few code adjustments, and refresh the page so Chrome will be reading the local copy of the JS file. I am wondering if this feature is still available, and if so how am I able to use it?
I know that I can add breakpoints to achieve something similar. I have followed a few guides, but none of them was able to achieve what I want: