Question

What is the preferred syntax for defining enums in JavaScript? Something like:

my.namespace.ColorEnum = {

RED : 0, 

GREEN : 1, 

BLUE : 2 

}

// later on 

if(currentColor == my.namespace.ColorEnum.RED) { 

// whatever

}

Or is there a more preferable idiom?

Answer 1

The preferred syntax for defining enums in JavaScript is to use the objects see the code below:-

var DaysEnum = Object.freeze({"monday":1, "tuesday":2, "wednesday":3, ...})

or

var DaysEnum = {"monday":1, "tuesday":2, "wednesday":3, ...} Object.freeze(DaysEnum)