How to copy an array in JavaScript with spread operator

Published: 19 February 2025
on channel: Profu' de geogra'

How to Copy an Array in JavaScript with the Spread Operator

Want to learn how to copy an array in JavaScript the right way? In this video, we’ll show you how to use the spread operator (...) to create a shallow copy of an array efficiently and cleanly.

Why Copy an Array?
In JavaScript, arrays are reference types, meaning that if you assign one array to another variable, they both point to the same memory location. Any changes to one will affect the other! To avoid this, you need to create a true copy of the array.

Copying an Array Using the Spread Operator
The spread operator (...) provides a quick and simple way to copy an array without modifying the original.
Why Use the Spread Operator?
✅ Simple & Readable
✅ Creates a New Independent Array
✅ Better than Traditional Loops

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