index(optional): The index of the current element.currentValue(Required): The value of the current element.findIndex() Syntax array.findIndex(function(currentValue, index, arr)) findIndex() Parameters The findIndex() stops checking the array for the remaining items once it finds a match returning the first occurence of the element in the array. In case no element passes the test, it returns -1. The findIndex() method returns the respective index of the component that satisfies a testing function. Method 1: Using findIndex() to get the object in the array This article we will explore two popular methods findIndex() and map() to find the object’s index inside JavaScript Array. Find the index of an Object in an Array in JavaScript *Fact Check: Index values range from, where n is the maximum number of elements. Let’s have a look at an array of objects. In other words, it is the element’s address. Index: An index is the location that contains the element inside the array. Object: An Object is an entity that has a particular state and behaviour We can retrieve each element using its location or index. Both these methods got added in the ES6 to the Array.Prototype and we can use these methods to get the index of an object in an array.īefore we start exploring the answer to this question, let’s familiarize ourselves with some basic concepts.Īrray: An array is an object which contains elements of a similar data type. We can find the index of an Object in an Array in JavaScript using the findIndex() and map() methods. Example 2 – map() method when the object is not present in an Array.
Example – Get the index of an object using findIndex() method.Method 1: Using findIndex() to get the object in the array.Find the index of an Object in an Array in JavaScript.
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