Find Index Of Object Using findIndex () Method. The method findIndex also takes a callback. For the rest, core-js and Babel already provide a polyfill. Here is the list of methods of how javascript find index of object in array: 1. The method findIndex is used to return the index of the first array element that passes a certain test function. The proposal is currently on Stage 3 and will be implemented in Chromiums and Safari soon. These methods iterate from the array beginning, though. The findIndex () method returns the index of the first element in the array that satisfies the provided testing function. Finding values in Arrays is a common practice via find and findIndex. Javascript find index of an array that contains object. An update of MDN's browser-compat-data caught my eye today. In the below example, we will find the index of an object whose one of the keys contains a given value.

The findIndex() method is not supported in IE browsers but you can use a polyfill of Array.findIndex Find index of an object in an array of objects Once the callbackFn returns a truthy value, the findIndex() method returns the index of the matched element otherwise, it returns -1. Description: indexOf () compares searchElement to elements of the Array using strict equality (the same method used by the or triple-equals operator).

fromIndex: It is the index after which the element is to be searched. predicate: It is the function that iterate through each element. The findIndex() method accepts a callback function as its argument, which iterates through all the elements in the array until the callbackFn does not return a truthy value It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. Syntax: findIndex (array, predicate.identity, fromIndex) Parameter: This method accepts three parameters as mentioned above and described below: array: It is the array in which the value is to be searched. This tutorial is based on using the ES6 Array.findIndex() method to get the first index of an item in an array of objects.

Js findindex