Using the debugger in JavaScript

Published: 22 March 2025
on channel: The Debug Lab
25
2

In this video, I’ll walk you through how to use the `debugger` in JavaScript using a simple HTML/CSS/JS project with multiple functions.

If you’re a beginner or even an intermediate JavaScript developer, understanding how to debug your code properly is a **superpower**. I’ll show you exactly where to place the `debugger` statement, how to use Chrome DevTools, and how to step through your code like a pro.

🔍 What You'll Learn:
00:00 – Intro
00:35 – Project Overview (HTML/CSS/JS)
01:20 – What is the `debugger` keyword?
02:10 – Using Chrome DevTools to debug
04:00 – Walking through multiple functions
06:00 – Inspecting variables & flow
07:30 – Final Output & Recap

💻 Code Used in This Video:
– Basic HTML Button + Output
– Clean CSS for layout
– JavaScript with 3 key functions:
• `doubleNumbers()`
• `filterLargeNumbers()`
• `sumNumbers()`

🧠 Perfect for:
– JavaScript Beginners
– CS Students
– Web Developers who want to understand debugging flow
– Anyone learning to read and trace logic clearly

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#JavaScript #Debugger #TheDebugLab #DebuggingInJS #ChromeDevTools #JSBeginner #FrontendDebugging #WebDev


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