Choose the Enum in a dynamic manner

Question

Choose the Enum in a dynamic manner

I have three enums

Country_INDIA, Country_USA,Country_AUSTRALIA

. During runtime, the specific country name is determined (it could be either INDIA, USA, or AUSTRALIA). Is it possible to select the correct enum based on the country name at runtime? For instance, if the country name is USA, I need to choose the Country_USA enum.

enum Country_INDIA {

  INTREST_RATE = '10%',
  MIN_INVESTMENT_DURATION = "5YRS"

};

enum Country_USA {

  INTREST_RATE = '3%',
  MIN_INVESTMENT_DURATION = "3YRS"
};

enum Country_AUSTRALIA {

  INTREST_RATE = '5%',
  MIN_INVESTMENT_DURATION = "2YRS"
};

let country_enum = "Country_"+"USA" 

console.log(country_enum.INTREST_RATE); // Retrieve the interest rate from the 'Country_USA' enum

javascript typescript

Answer 1

Answer №1

Enum may not be the most efficient solution for your situation; perhaps utilizing a map would provide a simpler approach:

const countryData = {
  USA: {
    INTEREST_RATE = 10,
    MIN_INVESTMENT_DURATION = "5YRS"
  },
  UK: {
    INTEREST_RATE = 1,
    MIN_INVESTMENT_DURATION = "10YRS"
  }

};

const interestRate = countryData['USA'].INTEREST_RATE; // 10

Answer 2

Enum may not be the most efficient solution for your situation; perhaps utilizing a map would provide a simpler approach:

const countryData = {
  USA: {
    INTEREST_RATE = 10,
    MIN_INVESTMENT_DURATION = "5YRS"
  },
  UK: {
    INTEREST_RATE = 1,
    MIN_INVESTMENT_DURATION = "10YRS"
  }

};

const interestRate = countryData['USA'].INTEREST_RATE; // 10

Answer 3

Answer №2

To enable access to enums in JavaScript, it is necessary to expose them.

enum CountryINDIA {
  INTEREST_RATE = '10%',
    MIN_INVESTMENT_DURATION = "5YRS"
}

enum CountryUSA {
  INTEREST_RATE = '3%',
    MIN_INVESTMENT_DURATION = "3YRS"
}

enum CountryAUSTRALIA {
  INTEREST_RATE = '5%',
    MIN_INVESTMENT_DURATION = "2YRS"
}

// Create a mapping object
const countries = {
  Country_INDIA: CountryINDIA,
  Country_USA: CountryUSA,
  Country_AUSTRALIA: CountryAUSTRALIA,
};

// Accessing the enums dynamically is now possible
let countryName = "Country_USA";
let countryEnum = countries[countryName];

if (countryEnum) {
  console.log(countryEnum.INTEREST_RATE); // Outputs: 3%
} else {
  console.log("Country not found");
}

Alternatively, using a plain old JavaScript object (POJO) instead of an enum may be a simpler solution.

Answer 4

To enable access to enums in JavaScript, it is necessary to expose them.

enum CountryINDIA {
  INTEREST_RATE = '10%',
    MIN_INVESTMENT_DURATION = "5YRS"
}

enum CountryUSA {
  INTEREST_RATE = '3%',
    MIN_INVESTMENT_DURATION = "3YRS"
}

enum CountryAUSTRALIA {
  INTEREST_RATE = '5%',
    MIN_INVESTMENT_DURATION = "2YRS"
}

// Create a mapping object
const countries = {
  Country_INDIA: CountryINDIA,
  Country_USA: CountryUSA,
  Country_AUSTRALIA: CountryAUSTRALIA,
};

// Accessing the enums dynamically is now possible
let countryName = "Country_USA";
let countryEnum = countries[countryName];

if (countryEnum) {
  console.log(countryEnum.INTEREST_RATE); // Outputs: 3%
} else {
  console.log("Country not found");
}

Alternatively, using a plain old JavaScript object (POJO) instead of an enum may be a simpler solution.

Choose the Enum in a dynamic manner

Answer №1

Answer №2

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