by Sai gowtham

How to copy an array in JavaScript

In this tutorial, we are going to learn about two different ways to copy or clone an array in JavaScript.

Slice method

The slice() method returns the copy of an array without modifying the original array in JavaScript.

Example:

const users = ['jim','raj','king'];

const users2 = users.slice() // creates the copy

console.log(users2) // ['jim','raj','king'];

Es6 spread operator (…)

In es6, we have a spread operator(…) which helps us to create a duplicate copy of an array.

Example:

const users = ['jim','raj','king'];

const users2 = [...users]// creates the copy

console.log(users2) // ['jim','raj','king'];

In the above code, we have added ...users inside users2 array so that all elements present inside the users array are copied to the users2 array.

Css Tutorials & Demos

How rotate an image continuously in CSS

In this demo, we are going to learn about how to rotate an image continuously using the css animations.

How to create a Instagram login Page

In this demo, i will show you how to create a instagram login page using html and css.

How to create a pulse animation in CSS

In this demo, i will show you how to create a pulse animation using css.

Creating a snowfall animation using css and JavaScript

In this demo, i will show you how to create a snow fall animation using css and JavaScript.

Top Udemy Courses

JavaScript - The Complete Guide 2021 (Beginner + Advanced)
JavaScript - The Complete Guide 2021 (Beginner + Advanced)
64,026 students enrolled
52 hours of video content
View Course
React - The Complete Guide (incl Hooks, React Router, Redux)
React - The Complete Guide (incl Hooks, React Router, Redux)
284,472 students enrolled
40 hours of video content
View Course
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
152,857 students enrolled
48.5 hours of video content
View Course