Web Reference: Description map() creates a new array from calling a function for every array element. map() does not execute the function for empty elements. map() does not change the original array. Jul 20, 2025 · The following example first uses filter() to extract the positive values and then uses map() to create a new array where each element is the average of its neighbors and itself. Dec 6, 2019 · The function map () in Javascript ES6 This useful array method creates a new array with the results of calling a provided function on every element in the calling array.
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