...When your launch config is set up, you can debug your project. Pick a launch config from the dropdown on the Debug pane in Code. Press the play button or F5 to start. The extension operates in two modes - it can launch an instance of Chrome navigated to your app, or it can attach to a running instance of Chrome. Both modes require you to be serving your web application from a local web server, which is started from either a VS Code task or from your command line. Using the URL parameter you simply tell VS Code which URL to either open or launch in Chrome. ...