You can use it to debug code running locally in Firefox or running remotely, for example on an Android device running Firefox for Android. See about debugging to learn how to connect the debugger to a …

Jul 29, 2024 · Firefox provides a debugger in the DevTools to examine the JS code of the web page to inspect or find various bugs. You can add breakpoints to control the flow of execution and inspect …

The Firefox Debugger has comprehensive tools to evaluate and repair broken code. Once you learn the basics, you’ll find that using a debugger is not only fast and easy, but it can save you from hours of …

Oct 15, 2020 · Need to debug JavaScript in Firefox? Simply follow these 7 steps. Includes examples. Read our debugging guide now.

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

Debug your JavaScript code running in Firefox from VS Code. Learn more. Looking for more than just Developer Tools? Check out the Firefox browser that is built specifically for developers and modern …

Aug 24, 2024 · Firefox Developer Tools provide expansive capabilities for inspecting, monitoring, and understanding your web apps. Making them a critical component of any modern web developer‘s toolkit.

Aug 13, 2025 · Discover essential techniques and tools for mastering the JavaScript debugger in Mozilla Firefox.

Jul 8, 2025 · The debugger statement invokes any available debugging functionality, such as setting a breakpoint. If no debugging functionality is available, this statement has no effect.

May 10, 2017 · The JavaScript Debugger enables you to step through JavaScript code and examine or modify its state to help track down bugs. You can use it to debug code running locally in Firefox or …