What is Web Worker?
A way to run JavaScript code in the background without blocking the main page from responding to users.
Why It Matters
Web workers keep your UI responsive during heavy computations by running them on a separate thread.
Real-World Example
Processing a large CSV file in a web worker so the page stays responsive while the data is being parsed.
“Understanding terms like Web Worker matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
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Related Terms
JavaScript
The programming language that makes websites interactive and dynamic
Service Worker
A script that runs in the background of a browser, enabling features like offline support and push notifications.
Frontend
The part of a website or app that users see and interact with directly
React
A popular tool for building user interfaces, created by Facebook, that makes complex UIs easier to manage
Next.js
A framework built on React that adds features like page routing, server-side rendering, and API handling
CSS
The language that controls how websites look, including colours, fonts, spacing, and layout