Convert long number into abbreviated string in JavaScript, with a special shortness requirement

Question

In JavaScript, how would one write a function that converts a given [edit: positive integer] number (below 100 billion) into a 3-letter abbreviation -- where 0-9 an

Answer 1

I'm using this function to get these values.

function Converter(number, fraction) {
    let ranges = [
      { divider: 1, suffix: '' },
      { divider: 1e3, suffix: 'K' },
      { divider: 1e6, suffix: 'M' },
      { divider: 1e9, suffix: 'G' },
      { divider: 1e12, suffix: 'T' },
      { divider: 1e15, suffix: 'P' },
      { divider: 1e18, suffix: 'E' },
    ]
    //find index based on number of zeros
    let index = (Math.abs(number).toString().length / 3).toFixed(0)
    return (number / ranges[index].divider).toFixed(fraction) + ranges[index].suffix
}

Each 3 digits has different suffix, that's what i'm trying to find firstly.

So, remove negative symbol if exists, then find how many 3 digits in this number.

after that find appropriate suffix based on previous calculation added to divided number.

Converter(1500, 1)

Will return:

1.5K