Join Eve Porcello for an in-depth discussion in this video Maps, part of Learning ECMAScript 6.
We also could use a map to utilize key value pairs…that are always the same values.…Finally, another good reason to use a map…is if we need to iterate in order.…Unlike objects, the map object iterates its elements…in insertion order.…So, let's take a look at an example of this.…Here in our index.html file…I'm going to create my first map on line seven.…So, we'll save our course…and we'll set this equal to new Map,…so this is a constructor function…that's going to build a new map for us.…
Now, on the map object…there are several different methods…that we can use.…
- What is ECMAScript?
- Transpiling ECMAScript with Babel and Babel-node
- Using the let and const keywords
- Creating strings with template strings
- Enhancing object literals
- Working with ES6 classes and class inheritance
Skill Level Beginner
Q: The Babel API is out of date. How do I proceed with the course?
A: We are updating the course. In the meantime, you can install the babel-cli package and then install the presets that you need to follow along with the tutorials.
Building a Polling App with Socket IO and React.jswith Alex Banks3h 56m Intermediate
1. What Is ECMAScript 6 (ES6)?
2. Transpiling ES6
3. ES6 Syntax
4. ES6 Functions & Objects
5. Asynchronous Features
6. ES6 Classes
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