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. The map() method of Array instances creates a new array populated with the results of calling a provided function on every element in the calling array. This tutorial shows you how to use the JavaScript Array map () method to transform elements in an array based on a provided function.
YouTube Excerpt: 00:00:00 introduciton 00:00:16 example 1 00:02:13 example 2 00:03:58 example 3 // .
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