Can you give an example of a multi-parameter arrow function?

Can you give me an example of a multi-parameter arrow function?

Sure! Here's a simple example:

const add = (a, b) => a + b;
const result = add(5, 3);
console.log(result); // Outputs: 8

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

What if I want to use default parameters?

You can set default values like this:

const add = (a = 0, b = 0) => a + b;
console.log(add(5)); // Outputs: 5
console.log(add()); // Outputs: 0

This way, if no arguments are provided, it defaults to 0.

Can I use more than two parameters?

Absolutely! You can add as many parameters as you need:

const multiply = (a, b, c) => a * b * c;
console.log(multiply(2, 3, 4)); // Outputs: 24

This function multiplies three numbers together.

How do I handle an arbitrary number of parameters?

You can use the rest parameter syntax:

const sum = (...numbers) => numbers.reduce((acc, curr) => acc + curr, 0);
console.log(sum(1, 2, 3, 4)); // Outputs: 10

This function sums any number of arguments.