What are some examples of web workers in JavaScript?

What are some examples of web workers in JavaScript?

Web workers are scripts that run in background threads. Examples include handling image processing, data fetching, and performing calculations without blocking the UI.

Can you give me a code example of a web worker?

Sure! Here's a simple example:

// worker.js
self.onmessage = function(e) {
    const result = e.data * 2;
    self.postMessage(result);
};

And to use it:

const worker = new Worker('worker.js');
worker.onmessage = function(e) {
    console.log('Result from worker:', e.data);
};
worker.postMessage(10); // Sends 10 to the worker

What are the benefits of using web workers?

The main benefits include improved performance by offloading heavy computations from the main thread, preventing UI freezes, and enabling parallel processing.

Are there any limitations to web workers?

Yes, web workers cannot access the DOM directly, and they have limited access to certain APIs. They also run in a separate global context.