1. Callbacks: Callbacks are a common technique used to handle asynchronous operations. By passing functions as arguments to other functions, you can define what should happen when an asynchronous task completes. However, managing complex asynchronous flows with callbacks can lead to callback hell and make the code difficult to read and maintain.
2. Promises: Promises provide a more structured and readable way to handle asynchronous operations. They allow you to chain operations together and handle success or failure using then() and catch() methods respectively. Promises greatly simplify asynchronous code compared to using callbacks directly.
3. Async/await: The async/await syntax provides a more synchronous-looking code structure while still leveraging Promises in the background. It allows you to write asynchronous code that looks similar to synchronous code, making it easier to understand and maintain.
It’s important to note that web workers have certain limitations and are not suitable for all types of tasks. They have restricted access to the DOM and cannot directly manipulate it. Additionally, web workers cannot share memory with the main thread and communicate through message passing.