Class Central is learner-supported. When you buy through links on our site, we may earn an affiliate commission.

LinkedIn Learning

JavaScript: Maps and Sets

via LinkedIn Learning

Write review
Babbel Ad

You’re only 3 weeks away from a new language

Learn More → University of the People Ad

Earn Your Business Degree, Tuition-Free, 100% Online!

Learn More →

Overview

Google, IBM & Meta Certificates – 40% Off
One Coursera Plus subscription covers most Professional Certificates on Coursera.
Unlock All Certificates
This course provides a detailed guide to JavaScript maps and sets, exploring common use cases and surprises they hold.

Syllabus

Introduction
  • Get to know JavaScript maps and sets
  • What you should know
1. Maps
  • The Map object defined
  • Build your Map object with the set method
  • Access a value with get
  • Does the map have your key?
  • Determine map size
  • Remove key-value pairs with clear and delete
  • Map: Keys and values methods
  • Map contents with the entries method
  • Loop over a map with forEach
  • Group entries with groupBy
  • Solution: Maps 1
  • Solution: Maps 2
2. WeakMaps
  • What is the WeakMap object?
  • Same methods, different map
3. Sets
  • The Set object defined
  • Add values to your set
  • Does Set have your value?
  • Get your set size
  • Delete and clear values in your set
  • Iterate over values in a set
  • Iterate over a set with entries
  • Iterate over your set with forEach
  • Solution: Sets 1
  • Solution: Sets 2
4. WeakSets
  • What is the WeakSet object?
  • Same methods, different set
Conclusion
  • Next steps

Taught by

Jamie Pittman

Reviews

4.8 rating at LinkedIn Learning based on 341 ratings

Start your review of JavaScript: Maps and Sets

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free
Someone learning on their laptop while sitting on the floor.