hands-on lab

Working With JavaScript Rest Operator

Difficulty: Intermediate
Duration: Up to 45 minutes
Students: 90
Rating: 5/5
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Description

In this lab, you will be working with the JavaScript Rest Operator.  The rest operator is a syntax with the purpose of capturing individual values and placing them into a data collection.

The rest operator is often used in conjunction with destructuring data collections.

The rest operator is sometimes referred to as the rest parameter.  It can be used as a function parameter to capture excess values that are passed as arguments.

 

Learning Objectives

Upon completion of this lab, you will be able to:

  • Use the rest operator to make a new object from the remaining object properties by using destructuring.
  • Use the rest operator to destructure and create a new array from an existing array.
  • Use the rest operator as a function parameter.

Intended Audience

  • Beginners learning front-end development
  • Software Engineers who need to learn front-end technologies to expand their skillset

Prerequisites

The following courses/courses and labs can ensure your success:

Covered topics

Lab steps

Introduction to JavaScript Labs
Destructuring an Object Using the Rest Operator
Destructuring an Array Using the Rest Operator
Adding a Rest Parameter to a Function