This popular article was updated in 2020. A web developer’s typical day involves creating HTML web pages with associated CSS and JavaScript in their favorite editor. The workflow: Open the locally hosted page in a browser. Swear. Open DevTools to investigate the layout and functionality problems. Tweak the HTML elements, CSS properties, and JavaScript code to fix the issues. Copy those changes back into the editor and return to step #1. While tools such as live reloading have made this…