7.5 Ways To Use The Spread Operator In JavaScript.

Spread operator goes beyond spreading arrays

Photo by Jason Hogan on Unsplash

The spread operator (...) is quite versatile and goes beyond just spreading arrays. I will show you various ways to leverage the spread operator.

Copying Arrays

It makes array copying concise and efficient. It creates a new array with the same elements, ensuring that changes to one array don’t affect the other.

const originalArray = [1, 2, 3];
const copiedArray = [...originalArray];

console.log(copiedArray); // Output: [1, 2, 3]

Merging Arrays

Combine arrays effortlessly by spreading their elements into a new array. This method is a cleaner alternative to methods like concat().

const array1 = [1, 2, 3];
const array2 = [4, 5, 6];
const mergedArray = [...array1, ...array2];

console.log(mergedArray); // Output: [1, 2, 3, 4, 5, 6]

Copying Objects

It also allows you to create a shallow copy of an object. Remember, this is a shallow copy, and nested objects will still reference the same memory.

const originalObject = { name: 'John', age: 25 };
const copiedObject = { ...originalObject };

console.log(copiedObject); // Output: { name…