JavaScript Map vs Object: When to use Map? (Essential for QA & Devs)
Are you still using standard Objects for all your key-value data? You might be missing out on performance and flexibility. In this video, I explain why the JavaScript Map is superior for handling complex test data.
Learn how to use the Map data structure in JavaScript to store and manage key-value pairs with precision and flexibility. This beginner-friendly tutorial covers how to create a Map, use its built-in methods, and understand why Maps are often preferred over traditional objects. Map is a collection of elements stored as key value pair
What you'll learn:
What is a Map in JavaScript and how it works
How to use .set(), .get(), .has(), .delete(), and .clear() methods
Differences between Map vs Object
Real-world use cases for Maps in coding and automation
Includes hands-on examples:
Creating a Map using new Map()
Iterating over Map entries
Using complex keys like objects and functions
Ideal for:
JavaScript beginners and intermediate learners
QA engineers and automation testers
Web developers working with structured data
Timestamps:
00:00 Introduction
00:19 Map Explanation
01:40 When to use Map?
02:20 Create Map
05:30 .keys() .values() .entries()
06.45 Map.delete()
08:05 Print values in Map
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