A polyfill is a custom implementation of native JavaScript functions. The.map() polyfill method takes in a callback that gets executed inside the myMap body. This is nothing but the length of the array through which theMyMap function is called. Since map() returns a new array, we create an empty array and push the results into
Table of contents
What Interviewers Are Looking ForMost Commonly Asked Questions in a Front-End Technical InterviewMap, ForEach, Filter and ReduceHow to Implement PolyfillsWhat is Debouncing?What are Closures?React HooksHow to Stand Out as a Developer by Creating Side ProjectsPractice, Practice, Practice.Conclusion40 Comments
Sort: