Async & Promisesmedium

What are Web Workers and how do they enhance JavaScript performance?

Discuss the use of Web Workers in a web application, their architecture, and the benefits they provide for handling CPU-intensive operations without blocking the main thread.

#web-workers#async#performance

Answer

Web Workers allow you to run scripts in background threads. Key points include:

  • Non-blocking: They do not interfere with the user interface, creating smoother experiences.
  • Concurrency: Allows for parallel processing of heavy computations, leading to better CPU utilization.
  • Limitations: Can’t access DOM directly and communicate via message passing, which adds some complexity.

Source: internal

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