What are some examples of arrow functions in real code?

What are some examples of arrow functions in real code?

Arrow functions are a concise way to write functions in JavaScript. For example, you can use them for callbacks in array methods.

Can you show me a specific example using map?

Sure! Here's an example: const numbers = [1, 2, 3]; const doubled = numbers.map(num => num * 2); This doubles each number in the array.

What about using arrow functions with promises?

Absolutely! You can use arrow functions with promises like this: fetch(url).then(response => response.json()).then(data => console.log(data));

Are there any downsides to using arrow functions?

Yes, arrow functions do not have their own this context, which can lead to issues in certain situations, like in methods of classes.