How do I convert a string to an enum value in JavaScript?
Gable E

In JavaScript, there is no built-in concept of enums like in some other programming languages. However, you can create a similar behavior by using plain objects or by defining a custom mapping between strings and their corresponding enum values. Here's an example of how you can accomplish this:

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// Define an object representing the enum
const MyEnum = {
  Value1: 'VALUE_1',
  Value2: 'VALUE_2',
  Value3: 'VALUE_3',
};

// Function to convert a string to an enum value
function convertStringToEnum(stringValue, enumObject) {
  for (const key in enumObject) {
    if (enumObject.hasOwnProperty(key) && enumObject[key] === stringValue) {
      return key;
    }
  }
  return null; // Return null if no matching enum value is found
}

// Usage example
const enumValue = convertStringToEnum('VALUE_2', MyEnum);
console.log(enumValue); // Output: Value2

In this example,MyEnum is an object that represents an "enum" in JavaScript. Each key in the object corresponds to an enum value, and its value is a string representing that value. You can add as many enum values as needed. TheconvertStringToEnum function takes two parameters:stringValue represents the string value to convert, andenumObject is the object representing the enum. Within the function, afor...in loop is used to iterate over the properties of theenumObject. The loop checks if the current property is an own property of the object (enumObject.hasOwnProperty(key)) and if its value matches thestringValue. If a match is found, the corresponding enum key is returned. If no matching enum value is found, the function returnsnull to indicate that the conversion was not successful. You can customize this approach to fit your specific requirements. For example, you can add additional validation or error handling to handle cases when an invalid string is provided. It's important to note that this approach doesn't provide strict type checking or enforcement like true enums in statically-typed languages. It relies on conventions and best practices to ensure correct usage of the enum values.

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