The url property may point to a file or a directory, if it points to a directory it must end withĪ trailing / (e.g. Launch configuration with a url and a webRoot property. In this case replace the file property in your With server-side components like Webservices). You may want (or need) to debug your application running on a Webserver (especially if it interacts Here's an example configuration for launching Firefox navigated to the local file index.html vscode/launch.json already exists in your project, you can open it and add aĬonfiguration snippet to it using the 'Add Configuration' button in the lower right corner of the The gear icon at the top of the Debug pane.įinally, if. You can do so manually or let VS Code create an example configuration for you by clicking vscode/launch.json in the root directory of your

To configure these modes you must create a file. In attach mode the extension connects to a running instance of Firefox (which must be manuallyĬonfigured to allow remote debugging - see below). reAttach also works for WebExtension debugging: in this case, the WebExtension is (re-)installed as a temporary add-on. You start the next debugging session - this is a lot faster than restarting Firefox every time. You can also set the reAttach option in your launch configuration to true, in this case Firefox won't be terminated at the end of your debugging session and the debugger will re-attach to it when In launch mode it will start an instance of Firefox navigated to the start page of your applicationĪnd terminate it when you stop debugging. You can use this extension in launch or attach mode. Watch pane for evaluating and watching expressions.Variables pane for inspecting and setting values.Debugging eval scripts, script tags, and scripts that are added dynamically and/or source mapped.Inject logging during debugging using logpoints.Pause on object property changes with Data breakpoints.Pause breakpoints, including advanced conditional and inline modes.

Debug your JavaScript code running in Firefox from VS Code.Ī VS Code extension to debug web applications and extensions running in the Mozilla Firefox browser.