Building a Polyfill for map function in JavaScript: Step-by-Step Guide
By the end of this video, you'll not only understand how to create a customMap polyfill for map function of array in JS but also have the confidence to build other custom array methods like filter and reduce. Perfect for sharpening your JavaScript skills and acing those coding interviews!
00:10 - How inbuilt map function works in JavaScript
00:20 - Explanation of Map function
00:31 - Explanation of callback function passed in map
00:58 - How to build customMap function
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