What are async event handlers and how do they work?

What are async event handlers and how do they work?

Async event handlers are functions that handle events asynchronously, allowing other code to run while waiting for an event to complete.

Can you give me an example of how to implement one?

Sure! In JavaScript, you can use the async keyword before a function to make it an async event handler. For example:

async function handleClick(event) {
    const data = await fetchData();
    console.log(data);
}

This allows the handleClick function to wait for fetchData() to complete without blocking the main thread.

What are the benefits of using async event handlers?

The main benefits include improved performance, better user experience, and the ability to handle multiple events simultaneously without freezing the application.

Are there any drawbacks to using async event handlers?

Yes, potential drawbacks include increased complexity in error handling and the need to manage the state of asynchronous operations.