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Last Updated: September 27, 2026
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Summary
Master the Modular Programming on Udemy to stand out in your job. In this video we will look at some of the new data structures. ES6 Introduced Maps and Sets to Join my channel to get access to perks: youtube.com/channel/UC8n8ftV94ZU_DJLOLtrpORA/join Hello All ... In this video CJ talks about the scenarios when it is better to use Maps and Sets instead of Objects and Arrays in 00:00:00 introduction 00:00:18 example 1 00:03:58 example 2 00:07:37 conclusion // forEach() = method used to iterate over the ... 00:00:00 arrays 00:01:06 index 00:02:16 ES6 is one of the best things that ever happened to Make your code more concise and readable by learning destructuring assignment in You Don't Know JS: ES6 & Beyond : Chapter 5: Discover how memory is managed in your programs and learn about the "mark and sweep" technique used by