If the item is a primitive value, like a string or number, you can use the indexOf method of an array: const letters = const index = letters. There are two approaches to find the required object, they are as follows: Finding index of search object using Array.findIndex () Searching the object directly using Array. Suppose you have the value of an item which is contained in an array, and you want to get its index. Notice the imported modules core-js/actual/array/find-last and core-js/actual/array/find-last-index I had to pull from core-js to make them work.Here is how to retrieve the index of an item in a JS array based on its value The following example shows how to find an object by id in an array of JavaScript objects. Here is a Codesandbox you can use to play with these two pretty helpful methods straight ahead. If no values satisfy the testing function, undefined is returned. That said, there is no need to do such things now with findLast and findLastIndex methods.

So obviously there is no way to search for an array item using a condition starting from the right side of the array and this is what these two new methods are bringing to the table. In this tutorial, you will learn JavaScript find() method and how to search the first occurrence element in an array using this javascript array method. These two methods search starting from the left side and they stop when they find a match. The JavaScript array find() method is used to return the value of the first element in the given array that satisfies the specified condition. JavaScript currently supports () and () to find the index of an item in the array.Īpart from these, we can use () and () to spot an element in the array based on some condition. At the moment of this writing two brand-new array methods named findLast and findLastIndex are getting closer to official release since they are in stage 3.

Array find js