I have a JavaScript array dataArray which I want to push into a new array newArray. Except I don't want newArray[0] to be dataArray. I want to push in all the items into the new array: var newArra...

Dec 9, 2008 · There are a couple of ways to append an array in JavaScript: 1) The push() method adds one or more elements to the end of an array and returns the new length of the array.

The unshift () method of Array instances adds the specified elements to the beginning of an array and returns the new length of the array. source: developer.mozilla.org

I'm trying to push multiple elements as one array, but getting an error:

Apr 19, 2016 · Array.push () and unique items Asked 9 years, 8 months ago Modified 1 year, 6 months ago Viewed 252k times

Jul 15, 2020 · 2 If you came to this question searching for a way to push to the end of an associative array while preserving the order, like a proper stack, this method should work. Although the output is …

May 21, 2015 · In JavaScript, pushing an object into an array, (as in this case an instance of the Array class), actually pushes into the array a reference to the object. Pushing the same variable row …

I have an array of objects and I'd like to push an element at the beginning of the of the array. I have this:

Jun 15, 2017 · The push() adds elements to the end of an array and returns the new length of the array. Thus your return here is invalid. The concat() method is used to merge arrays. Concat does not …

May 24, 2021 · When you use the push method, you are adding the element to the existing one i.e not creating a new array. The push () method adds one or more elements to the end of an array and …