MODULE 10 · 5 lessons · 5 challenges

Browser DevTools

The browser is your most-used development tool. Five lessons covering the Elements, Console, Sources, Network, and Performance panels — exactly what professional web developers reach for every day to inspect markup, debug JavaScript, profile performance, and diagnose network issues.

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All lessons in this module

1. The Elements Panel — Inspecting & Editing the Live DOM

Browser DevTools Quiz Challenge

2. The Console — Logging, Evaluating, and Debugging

Browser DevTools Quiz Challenge

3. The Sources Panel — Breakpoints & Step Debugging

Browser DevTools Quiz Challenge

4. The Network Panel — Requests, Headers, and Waterfalls

Browser DevTools Quiz Challenge

5. Performance, Lighthouse & Memory — Profiling Your Site

Browser DevTools Quiz Challenge