can JavaScript is single threaded? js concepts

JavaScript operates on a single main thread by design, making it inherently single-threaded.

Asynchronous Operations and Event Loop:

Mechanism: JavaScript uses the event loop to handle asynchronous tasks (network requests, timers, and event listeners).

Example: setTimeout delays execution of its callback, allowing the main thread to continue processing other tasks.

Web Workers:

Enable background threads for executing scripts.

Threads are isolated from the main thread and cannot directly manipulate the DOM.

Communication occurs through message passing between threads.

Provide true multithreading for computationally intensive tasks.

Additional threads can be spawned to perform heavy computations without blocking the main thread.