Today I Learned - Rocky Kev

TIL using Object.freeze to simulate enums in Javascript

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TAGS: javascript datatype objects

Enums are useful to assign names to the integral constants which makes a program easy to read and maintain. The keyword “enum” is used to declare an enumeration.

Enum in C

Javascript doesn't have native support for Enums.

But you can simulate it with Object.freeze

const Direction = Object.freeze{
  Up: 'Up',
  Down: 'Down',
  Left: 'Left',
  Right: 'Right'
};

Via 3 TypeScript Tricks You Can Use in JavaScript

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