It’s one of several useful methods available on Arrays, for a more complete guide see How To Use Array Methods in JavaScript: Iteration Methods. ConclusionĪrray.find is a simple but incredibly useful method for searching JavaScript arrays. The index is probably not something you’ll need often - but it’s great to have available at times. In non-shorthand, non-ES6 form: const result = trees. Here’s a simple example with an array of strings: const trees = const result = trees. find (testingFunction ) // that's it! Simple example:

Using find() is super easy! The only required parameter of this method is a testing function, and it can be as simple or complex as needed. So if you only need a single value, use find()! When you need to find/return multiple values, reach for filter() instead. Another difference is when nothing is found, this method returns a value of undefined. The function and syntax of find() is very much like the Array.filter method, except it only returns a single element. When you want a single needle from the haystack, reach for find()! When to Use Array.find The JavaScript Array.find method is a convenient way to find and return the first occurence of an element in an array, under a defined testing function.

Javascript object find