And we'll use the find() method to find the dog which is a Chihuahua from inside the array. The array called foundDogs will contain all the names of the recovered dogs as well as their respective breeds. We can express this scenario in JavaScript using an array collection. For example, the breed of your dog (a Chihuahua) might be used to identify it. To be able to find your dog, you need to provide unique information about him. You report it to the relevant authorities and they bring together a group of recovered dogs. Let's assume you have a dog which goes missing. If callbackFn never returns a truthy value, find () returns undefined. find () then returns that element and stops iterating through the array. It calls a provided callbackFn function once for each element in an array in ascending-index order, until callbackFn returns a truthy value. In the following examples, I will demonstrate how you can use the find() method to retrieve the first item from an array which matches a specified condition in JavaScript. The find () method is an iterative method. How to Use the find() Method in JavaScript Suppose that you want to find the first odd number in the array. If more than one element satisfies the condition then the first element satisfying the condition is returned. array: This represents the target array along with all its items. JavaScript arr.find () function is used to find the first element from the array that satisfies the condition implemented by a function.index: This is the index position of the currentItem inside the array.currentItem: This is the element in the array which is currently being iterated over.The callback function can take in the following parameters: So the find() method returns the first element inside an array which satisfies the callback function. When it finds a match (in other words, the callback function returns true), the method returns that particular array item and immediately breaks the loop. The find() method is an Array.prototype (aka built-in) method which takes in a callback function and calls that function for every item it iterates over inside of the array it is bound to. Well, we can use the find() method to do just that. And you won't care how many other items (if any) exist within the same array. When you're working with an array collection, sometimes you'll only need to find out if an item exists in the array so you can retrieve it.
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