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What is a Worker in JavaScript?

In this video, you’ll learn what a Web Worker is, why JavaScript uses workers, and how workers help run heavy tasks without blocking the main thread.

JavaScript normally runs on a single thread, which can make the UI freeze when heavy computations run. Web Workers solve this problem by running tasks in a separate background thread.

🔥 In this video you will learn:
What is a Web Worker in JavaScript
Why workers are needed
Main thread vs worker thread
Simple real-world example of a worker
When to use and when not to use workers

This video is perfect for:
JavaScript beginners
Frontend developers
Web development students
Anyone preparing for JavaScript interviews

📌 Watch till the end to understand workers in the simplest way possible.


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