JavaScript | What Are Arrow Functions?

Arrow functions are a simpler way to write functions in JavaScript. They're shorter and easier to read.

Example 1:

Here's an example that uses a traditional function to square a number:

function square(num) {
    return num * num;
}

And here's the same functionality using an arrow function:

const square = (num) => num * num;

Example 2:

Here's an example that uses a traditional function to find the average of three numbers:

function average(a, b, c) {
    return (a + b + c) / 3;
}

And here's the same functionality using an arrow function:

const average = (a, b, c) => (a + b + c) / 3;

As you can see, arrow functions can make your code look cleaner.

References:

JavaScript Documentation