Join egghead, unlock knowledge.

Want more egghead?

This lesson is for members. Join us? Get access to all 3,000+ tutorials + a community with expert developers around the world.

Unlock This Lesson
1×
Become a member
to unlock all features

Level Up!

Access all courses & lessons on egghead today and lock-in your price for life.

Autoplay

    Represent Collision-free String Constants as Symbols in JavaScript

    javascriptJavaScript

    ES2019 introduces the Symbol.prototype.description property. In this lesson, we'll learn why this property is useful and unlocks Symbols as appropriate to use to represent strings constants in JS. We'll investigate a use case for string constants and see why using Symbols prior to ES2019 was not appropriate. Then we'll see how using .description fixes that. Lastly, we'll learn why using Symbols may be better than strings for constants in certain use cases by examining what it means to be "collision free".