How do I define an arrow function with multiple parameters?

Can you explain how to define an arrow function with multiple parameters?

Sure! In JavaScript, you can define an arrow function with multiple parameters by listing them within parentheses. For example:

const add = (a, b) => a + b;

This function takes two parameters, a and b, and returns their sum.

What if I want to include default values for those parameters?

You can set default values by assigning them in the function definition. For example:

const multiply = (a = 1, b = 1) => a * b;

Here, if no arguments are provided, a and b will default to 1.

Can I use rest parameters with arrow functions?

Yes, you can! Rest parameters allow you to pass an indefinite number of arguments as an array. For example:

const sum = (...numbers) => numbers.reduce((acc, num) => acc + num, 0);

This function sums all the numbers passed to it.

Thanks! Can you give me an example of using an arrow function in an array method?

Absolutely! Here's an example using the map method:

const numbers = [1, 2, 3];
const doubled = numbers.map(num => num * 2);

This will create a new array with each number doubled.