How do I convert a string to enum in TypeScript?

Question

I have defined the following enum in TypeScript: ``` enum Color{ Red, Green } ``` Now in my function I receive color as a string. I have tried the following code: ``` var green= "Green"; var color : Color = <Color>green; // Error: can't convert string to enum ``` How can I convert that value to an enum?

Accepted Answer

Enums in TypeScript 0.9 are string+number based. You should not need type assertion for simple conversions:

```
enum Color{
    Red, Green
}

// To String
 var green: string = Color[Color.Green];

// To Enum / number
var color : Color = Color[green];
```

Try it online

I have documentation about this and other Enum patterns in my OSS book : https://basarat.gitbook.io/typescript/type-system/enums

Make sure to use this if you are using the typescript flag `--noImplicitAny`:

```
var color : Color = Color[green as keyof typeof Color];
```

How do I convert a string to enum in TypeScript?

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