Rediscovering JavaScript: ES6, ES7 & ES8/

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Using the Rest Parameter and Default Arguments

Using the Rest Parameter and Default Arguments

Learn how to use the rest parameter and default arguments in arrow functions.

We'll cover the following...

Using the rest parameter

In the Using the Rest Parameter lesson, we saw how functions can take a rest parameter. Arrow functions’ parameters can also have a rest parameter.

Let’s create an arrow function, greet(), that takes multiple subjects.

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'use strict';
//START:CODE
const greet = 
  (message, ...subjects) => console.log(message + ' '+ subjects.join(', '));
greet('Hi', 'Developers', 'Geeks');
//END:CODE

Explanation

  • The function takes two parameters: ...