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Array.map()

In this lesson, you'll learn about the array.map() method in JavaScript, which is used to create a new array by applying a function to each element of an existing array. ### Array.map() The key difference between array.map() and array.forEach() is that the map() method allocates memory to store and return a new array, while forEach() does not allocate memory and returns undefined . The forEach() method is used for executing a function on each array element without returning a new array, whereas map() returns a new array with the results of applying a function to each element.

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