The push() method adds new items to the end of an array. The push() method changes the length of the array. The push() method returns the new length.

Dec 9, 2008 · How do I append an object (such as a string or number) to an array in JavaScript? Use the Array.prototype.push method to append values to the end of an array: "Hi", "Hello", "Bonjour" You can use the push() function to append more than one value to an array in a single call: console.log(arr[i]);

Nov 17, 2024 · Here are different ways to add elements to an array in JavaScript. 1. Using push () Method. The push () method adds one or more elements to the end of an array and returns the new length of the array. Syntax. 10, 20, 30, 40, 50, 60, 70. 2. Using unshift () Method.

Jan 4, 2010 · To append values on the end of existing array: To create a new array, you should really use [] instead of new Array() for the following reasons: new Array(1, 2) is equivalent to [1, 2], but new Array(1) is not equivalent to [1].

If you want to push elements that are in an array at the beginning of your array, use <func>.apply(<this>, <Array of args>): const arr = [1, 2]; arr.unshift.apply(arr, [3, 4]); console.log(arr); // [3, 4, 1, 2]

Adding Array Elements. The easiest way to add a new element to an array is using the push() method:

Oct 14, 2022 · By default, you can use the index of an element in an array to access or modify its value. But JavaScript provides different methods that you can use to add/append more elements to an array. The push method takes in the element (s) to be added to the array as its parameter (s). Here's an example:

Nov 28, 2024 · These are the following ways to append an element to the JS array: 1. Using Array.push () Method. JavaScript array.push () Method is used to add one or more elements to the end of the array. 2. Using Spread Operator with Array Literal. Javascript spread operator allows an iterable to expand in places where 0+ arguments are expected.

Jul 18, 2022 · When you want to add an element to the end of your array, use push(). If you need to add an element to the beginning of your array, use unshift(). If you want to add an element to a particular location of your array, use splice(). And finally, when you want to maintain your original array, you can use the concat() method.

Sep 9, 2020 · There are various ways to add or append an item to an array. We will make use of push, unshift, splice, concat, spread and index to add items to array.