Ways to properly structure a string or number in TypeScript to display in thousand groups

My custom function is designed to transform a number or string from the format 'xxxxx.xx' to 'xx,xxx.xx' or xxxxx.xx to 'xx,xxx.xx'

function adjustFormat(input: number | string): string {
  return `${+input.toLocaleString()}`;
}
console.log(adjustFormat(123456)); #123,456
console.log(adjustFormat(123456.78)); #123,456.78
console.log(adjustFormat('123456')); #123,456
console.log(adjustFormat('123456.78')); #123,456.78
=> 
NaN
NaN
123456
123456.78

Answer №1

Here's a functioning solution:

function processInput(inputData: number | string): string {
  return Number(inputData).toLocaleString();
}

The Number function is utilized to convert a string into a numerical value. More information can be found at MDN's documentation on the Number object.

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