Array.prototype.unshift () - JavaScript | MDN
Jul 20, 2025 · The unshift () method of Array instances adds the specified elements to the beginning of an array and returns the new length of the array.
JavaScript Array unshift () Method - W3Schools
Description The unshift() method adds new elements to the beginning of an array. The unshift() method overwrites the original array.
JavaScript Array unshift () Method
In this tutorial, you'll learn how to use the JavaScript Array unshift () method to add one or more elements to the beginning of an array.
JavaScript Array unshift () Method - GeeksforGeeks
Jul 15, 2024 · JavaScript Array unshift () Method is used to add one or more elements to the beginning of the given array. This function increases the length of the existing array by the number of elements …
JavaScript Array unshift() Method - Complete Guide | Unshift
The unshift method is an essential tool for array manipulation, allowing the addition of one or more elements to the beginning of an array, thereby modifying the array in place. The unshift method …
JavaScript Array Methods Under the Hood: Unshift and Shift Explained
Jul 31, 2025 · So, the next time you use shift() or unshift(), remember: JavaScript is quietly doing a lot of heavy lifting to maintain the order of your array. Understanding this can help you make better …
Manipulate Arrays With unshift Method - freeCodeCamp.org
.unshift() works exactly like .push(), but instead of adding the element at the end of the array, unshift() adds the element at the beginning of the array. Example: After the shift, ourArray would have the …
JavaScript Unshift() Method: When to Use and When to Avoid It
If you're dealing with performance-critical code or large datasets, it's often better to avoid unshift () and use one of these alternatives. This is a modern, readable, and often more performant way to prepend …
JavaScript unshift - adding elements to array start - ZetCode
Apr 4, 2025 · The unshift method adds one or more elements to the beginning of an array and returns the new length of the array. Unlike concat, unshift modifies the original array directly.
Array.prototype.unshift ()
The unshift() method adds one or more elements to the beginning of an array and returns the new length of the array.