Web Workers and Multithreading
Jonathon Simpson · Apress eBooks · 2023
Most implementations of JavaScript are single-threaded, with some exceptions. As JavaScript has begun to do more and more computation, the fact that a lot of processing is confined to a single thread has become somewhat limiting even with Web APIs to bear some of that load. On a single thread, for example, poorly written but computationally intensive code can stop the entire application from working.