What is threading in JavaScript?

What is threading in JavaScript?

Threading in JavaScript refers to the ability to run multiple threads of execution concurrently. However, JavaScript is single-threaded by nature, meaning it executes code in a single sequence. To handle asynchronous operations, JavaScript uses an event loop and Web Workers.

How do Web Workers work in JavaScript?

Web Workers allow you to run scripts in background threads. They can perform tasks without interfering with the user interface, making your web applications more responsive. You create a worker by instantiating a new Worker object and passing it a JavaScript file.

Can you give an example of using a Web Worker?

Sure! Here's a simple example:

// main.js
const worker = new Worker('worker.js');

worker.onmessage = function(event) {
    console.log('Message from worker:', event.data);
};

worker.postMessage('Hello, Worker!');

And in worker.js:

onmessage = function(event) {
    postMessage('Received: ' + event.data);
};