Change a camelCase string to ALL_CAPS while adding underscores in JavaScript

Question

Change a camelCase string to ALL_CAPS while adding underscores in JavaScript

Currently, I'm dealing with a situation where I have a list of variables stored in a file that I need to convert into all capital letters and separate them with underscores using JavaScript.

The variable pattern looks something like this:

AwsKey

AwsSecret

CognitoUserPool

I am looking to convert them to look like this:

AWS_KEY

AWS_SECRET

COGNITO_USER_POOL

Could someone provide guidance on how I can create a function that accomplishes this task in JavaScript? Any assistance would be greatly appreciated. Thank you.

javascript function

Answer 1

Answer №1

Edit: Apologies for forgetting to capitalize them

function convertCamelToCaps(str) { return str.replaceAll(/([A-Z])/g, '_$1').replace(/([a-z])/, '$1).toUpperCase().slice(1); }

const camelWords = [
  'AwsKey',
  'AwsSecret',
  'CognitoUserPool',
];

function convertCamelToCaps(str) { return str.replaceAll(/([A-Z])/g, '_$1').toUpperCase().slice(1); }

const capsList = camelWords.map(convertCamelToCaps);

console.log(capsList);

Answer 2

Edit: Apologies for forgetting to capitalize them

function convertCamelToCaps(str) { return str.replaceAll(/([A-Z])/g, '_$1').replace(/([a-z])/, '$1).toUpperCase().slice(1); }

const camelWords = [
  'AwsKey',
  'AwsSecret',
  'CognitoUserPool',
];

function convertCamelToCaps(str) { return str.replaceAll(/([A-Z])/g, '_$1').toUpperCase().slice(1); }

const capsList = camelWords.map(convertCamelToCaps);

console.log(capsList);

Change a camelCase string to ALL_CAPS while adding underscores in JavaScript

Answer №1

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