Polyfill of reduce in Javascript | Array.reduce implementation and it's polyfill

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In this video We will see, how to write a polyfill for reduce function in Javascript.

A Polyfill is a piece of code used to provide modern functionality on older browsers that do not natively support it.

🔖 Topics Covered -
✅ How to start a Polyfill?
✅ How reduce method works ?

🔖 Chapters
=====================================
00:05 Introduction
00:30 What is Polyfill?
02:05 Why it’s being asked in most of the interviews?
03:45 Need of Polyfill?

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Great explanation, whenever I need to revise polyfills, I come back to this series, Thanks a lot !!

swatibhatia

how would acc would add if inital not passed, ? this is half implementation which would lead to wrong answers not errors

amansaxena

This wont work in multiplication scenario
arr.myReduce((acc, ele) => acc * ele);

vaibhav-vw

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