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hands-on lab

Working With JavaScript Spread Operator

Difficulty: Intermediate
Duration: Up to 45 minutes
Students: 142
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Description

In this lab, you will be working with the JavaScript Spread Operator. The spread operator is a syntax used to unpack values from an iterable data collection into individual elements. The spread operator can be used as a copy feature in JavaScript, which can lead to some unintended side effects.

Learning Objectives

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

  • Use the spread operator to make a new object from an existing object.
  • Use the spread operator to merge two arrays into one new array.

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:

Updates

March 13, 2025 - Updated instructions to enable auto-save and address validation check errors

Covered topics

Development
Javascript
Hands-on Lab UUID

Lab steps

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  1. Introduction to JavaScript Labs
  2. Creating a New Car Object Using the Spread Operator
  3. Replacing Property Values of the New Car Object
  4. Adding an Additional Property to the New Car Object
  5. Merging Two Arrays Using the Spread Operator

Lab Rules