![]() Let us say we have a callback function as shown in the listing below. ![]() array: the array on which the find method is being called.index: the index of the current element being processed.element: the current element being processed in the array.The callback function parameter of the find method takes three parameters: To find the index of an object in an array by a specific property, use the findIndex() method to iterate over the array. An object which will be the value of this in the callback function is an optional parameter, and if it’s not passed, the value will be set to undefined in the callback function.The callback function will be called for each element of the array until the given condition for a particular element is not true.It takes two parameters, one required callback function and an optional object, which will be set as a value of this inside the callback function. Someone asked me today: How do you know when to use an object, and when to use an array I couldnt find a resource online that gave the answer I wanted. This returns a value on a given criterion, otherwise, it returns ‘undefined’. To search a particular object, we will use the Array prototype find method.
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