Web Reference: 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. 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 11, 2025 · The map () method is an ES5 feature that creates a new array by applying a function to each element of the original array. It skips empty elements and does not modify the original array.
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