![]() ![]() Map() takes a maximum of three arguments, which are value/element, index, and array. The map method will help you do this: let arrOne = This is where map() comes into the picture. ![]() But you also don’t want to mess with the original array. Suppose you have an array arrOne where you’ve stored some numbers, and you’d like to perform some calculations on each of them. It’ll be fun! How to Use the map() Method You'll also learn where you'll want to use them and how to use them, with the help of analogies and examples. In this tutorial, you'll see how each of these high-order array methods work. Map, filter, and reduce are three of the most useful and powerful high-order array methods. ![]() So this makes these methods a must-learn. Second, React builds on key concepts like the map(), filter(), and reduce() JavaScript methods (after all – React is a JavaScript library). So if that's what you're doing, first of all – great job! You have made a wise decision by not starting directly with React. If you want to learn React, it's important to get a fair understanding of some core JavaScript concepts first. ![]()
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