TypeScript Enum

Enumeration (Enum) is a data type in typescript. that are used to store constant element value. There is three type of Enum will possible in typescript.

Numeric Enum

enum Month{
  January,
  February,
  March,
  April,
  May,
  June
};

enum Wallet{
  coins = 10,
  rupee = 100,
  dollar = 3,
  euro  = 12
};

String Enum

enum Month{
  Jan="January",
  Feb="February",
  Mar="March",
  Apr="April",
  May="May",
  June="June"
};
console.log(Month);

{ Jan: 'January',
  Feb: 'February',
  Mar: 'March',
  Apr: 'April',
  May: 'May',
  June: 'June' }

Heterogeneous Enum

enum Code{
  error = 0,
  status,
  type  = "Typescript"
};
console.log(Code);

{ '0': 'error',
  '1': 'status',
  error: 0,
  status: 1,
  type: 'Typescript' }