Learn TypeScript 3 by Building Web Applications

String enums

In TypeScript, it is also possible to define string enums. The following is an example:

enum TShirtType { 
    CrewNeck = "Crew Neck", // must be initialized with a constant 
    VNeck = "V Neck", 
    Henley = "Henley", 
    Polo = "Polo", 
    SpecialPolo = Polo, // may be initialized with another entry 
    ScoopNeck = "Scoop Neck" 
} 
 
let myTShirtType = TShirtType.CrewNeck; 
 
console.log("My T-Shirt type: ", myTShirtType); 

And again, the corresponding output, is as follows:

$ node ts-enums-02-string-enum.js 
My T-Shirt type:  Crew Neck 

String enums do not have the same numerical index value as numerical enums. The constants associated with the enum entry names are the values.

One direct benefit is that you can serialize/persist these values without worrying ...