How To Write Java Script In Chrome . Then, click on the load unpacked button and choose the directory where you have placed the files. A chrome extension is essentially just a group of files that customizes your experience in the google chrome browser. javascript Create a Chrome extension show content on a page and from stackoverflow.com Under sources tab go to snippets, + new snippet. Ad sonarqube helps you to write cleaner & safer code with continuous code quality & security. Now, the breakpoint line is highlighted by a blue icon on the right side of the line and shown in the breakpoints section of the debugging pane.