What is find() & findIndex in JavaScript | JavaScript Tutorials in Hindi | Interview Question #38

In JavaScript, the find() method is a built-in function available on arrays. It is used to retrieve the first element in an array that satisfies a given condition. The find() method executes a provided callback function once for each element in the array until it finds a matching element. Once a match is found, the find() method immediately returns the value of that element. If no matching element is found, undefined is returned.

It’s important to note that the find() method only returns the first matching element, even if there are multiple matches in the array. If you need to find all matching elements, you can use other array methods like filter().

The find() method is supported in most modern browsers and in Node.js. However, if you need to support older browsers, you may need to use a polyfill or alternative approaches like a for loop or the Array.prototype.indexOf() method.