Javascript

There are several ways in which you can merge arrays in Javascript. You can use the spread operator, concat method, or use the well tested for loop and push technique. In this post, let us explore them in detail.

The spread operator in JavaScript spreads the array or object (or any iterable object) to its elements. It is represented by three dots (…). It’s a handy operator for copying, merging, or expanding elements. This guide will explore the spread operator, its benefits, how to use it, and everyday use cases.

JavaScript array is a data structure that can store ordered collection items of various data types. An ordered collection of items means that the items follow a specific order. The order is independent of the value of the item. To maintain order, each item is given a nonnegative integer starting with 0, known as the index of the array. We use the index to access the array element.

Array Push Method is the method that we use when we want to insert a value, object or another array into an array. This tutorial will teach you how to add a single element or multiple items to an existing array. You will also learn How to merge two arrays using the push method. It covers all the features of the array push method.

The array length property of the JavaScript array returns the number of elements the array can hold. The length also includes the number of elements plus empty slots (in the case of sparse arrays), if any, in that array. We can also use the length property to increase or shorten the array’s length. In this tutorial, let us learn more about the length property of the array and how to use it in JavaScript