What are web workers and how do they improve performance?

What are web workers and how do they improve performance?

Web workers are scripts that run in background threads, allowing for parallel execution of tasks. This improves performance by offloading heavy computations from the main thread, preventing UI blocking.

Can you give me an example of when to use a web worker?

Sure! If you're processing large amounts of data, like image manipulation or complex calculations, using a web worker can keep your app responsive while the processing happens in the background.

Are there any limitations to using web workers?

Yes, web workers have some limitations. They can't access the DOM directly, and they have a different scope, meaning you need to use message passing to communicate with the main thread.

How do I create a web worker in my project?

To create a web worker, you can use the Worker constructor in JavaScript. Just provide the path to your worker script, and then you can send messages to and from the worker using postMessage.

What browsers support web workers?

Most modern browsers support web workers, including Chrome, Firefox, Safari, and Edge. However, it's always good to check for compatibility if you're targeting older browsers.