Object.prototype._defineGetter_() Deprecated.We can use the first argument of the function (which is an object in this case) to find if it is desired object or not. array: The array findIndex() is being called on.

index: The index of the current element being processed in the array.

element: The current element being processed in the array.

Syntax: array.findIndex(callback(element, index, array) If no element is found, the method returns -1. It then returns the index of the first element that satisfies the provided testing function. The method executes a provided function once for each element present in the array, in order.

The findIndex() method is used to find the index of an element in an array. Find Index Of Object Using findIndex() Method Using find() method with indexOf() Methodġ.Here is the list of methods of how javascript find index of object in array: We can find the index of a student in the array on the basis of any of their property. Suppose we have an array of students, where a student is an object that has name, roll, and age properties. Real-life data are generally an array of objects and we need to find a specific object from the array on the basis of some property of that object. You will see different methods to select an object from an array and find the index of that object.

In this article, you will know how to find the index of an object in an array using JavaScript.

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