What are the differences between timeouts and intervals in JavaScript?

What are the differences between timeouts and intervals in JavaScript?

In JavaScript, a timeout is used to execute a function once after a specified delay, while an interval repeatedly executes a function at specified intervals.

Can you give me an example of how to use both?

Sure! For a timeout, you can use setTimeout(() => { console.log('Hello!'); }, 1000); to log 'Hello!' after 1 second. For an interval, use setInterval(() => { console.log('Hello again!'); }, 1000); to log 'Hello again!' every second.

What happens if I clear a timeout or an interval?

If you clear a timeout using clearTimeout(timeoutId), the function won't execute. For an interval, clearInterval(intervalId) stops the repeated execution.

Are there any performance considerations I should be aware of?

Yes, using too many intervals can lead to performance issues, especially if they execute frequently. It's best to use them judiciously.