With an element's index, you can directly access, update, or remove an element. One of the most common things a developer needs to find is the index of a particular element. Tests whether all elements in the array match a test function

Tests whether the array has some element that matches a test function Tests whether the array includes a primitive value Searches for an element with a test function and returns the element itself

Searches for an element with a test function and returns its index Searches for a primitive value and returns its index In this tutorial, you will learn how to search for and find data within JavaScript arrays by using the indexOf(), lastIndexOf(), find(), findLast(), includes(), some(), and every() methods. More often than not, however, you need to find data within an array, and while you can certainly accomplish that task with loops and iterations, JavaScript provides many methods for finding specific data within your arrays.

JavaScript arrays have a powerful toolset of methods to help developers to sort, filter, and manipulate data. In this series of tutorials, you'll explore intermediate-level topics for programming with arrays in JavaScript.

If you already understand the basics of JavaScript arrays, it's time to take your skills to the next level with more advanced topics.

Findindex javascript