Description 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", …

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.

The unshift / push add an item to the existed array from begin/end and shift / pop remove an item from the beginning/end of an array. But there are few ways to add items to an array without a mutation. the result is a new array, to add to the end of array use below code:

Jun 3, 2016 · I can offer two methods for Array.prototype.insert() which will allow you insert single or multiple elements starting from any index within the array. 1) mutates the array it's called upon and returns it

Mar 13, 2025 · Array.prototype.unshift() has similar behavior to push(), but applied to the start of an array. The push() method is a mutating method. It changes the length and the content of this.

Jan 9, 2025 · These are the following ways to add an object to JS array: 1. Using JavaScript Array push () Method. The push () method is used to add one or multiple elements to the end of an array. It returns the new length of the array formed. An object can be inserted by passing the object as a parameter to this method. 2.

In this tutorial, you will find out the solutions that JavaScript offers for appending an item to an array. Imagine you want to append a single item to an array.

Here are 5 ways to add an item to the end of an array. push, splice, and length will mutate the original array. Whereas concat and spread will not and will instead return a new array. Which is the best depends on your use case 👍. Mutative. This will change the original array. Non Mutative.

Here are the 6 different JavaScript functions you can use to add elements to an array: 1. push – Add an element to the end of the array. 2. unshift – Insert an element at the beginning of the array. 3. spread operator – Adding elements to an array using the new ES6 spread operator. 4. concat – This can be used to append an array to another array.