You can set one or many breakpoints in one or many scripts by selecting the line gutter to set a breakpoint for a particular line of code; then, you can select another script and set another breakpoint and so on as shown. Notice on the right panel the breakpoints that you set now appear with checked boxes.
Hands-on with the Google Chrome Development Tools
by Ryan Boudreaux | March 30, 2012, 7:15am PDT | Image 44 of 56
Set breakpoints - Image 44 of 56
Ryan has performed in a broad range of technology support roles for electric-generation utilities, including nuclear power plants, and for the telecommunications industry. He has worked in web development for the restaurant industry and the Federal government.