Convert digits into words with JavaScript

Question

I am making a code which converts the given amount into words, heres is what I have got after googling. But I think its a little lengthy code to achieve a simple task. Two R

Answer 1

I like the result I got here which i think is easy to read and short enough to fit as a solution.

function NumInWords (number) {
  const first = ['','one ','two ','three ','four ', 'five ','six ','seven ','eight ','nine ','ten ','eleven ','twelve ','thirteen ','fourteen ','fifteen ','sixteen ','seventeen ','eighteen ','nineteen '];
  const tens = ['', '', 'twenty','thirty','forty','fifty', 'sixty','seventy','eighty','ninety'];
  const mad = ['', 'thousand', 'million', 'billion', 'trillion'];
  let word = '';

  for (let i = 0; i < mad.length; i++) {
    let tempNumber = number%(100*Math.pow(1000,i));
    if (Math.floor(tempNumber/Math.pow(1000,i)) !== 0) {
      if (Math.floor(tempNumber/Math.pow(1000,i)) < 20) {
        word = first[Math.floor(tempNumber/Math.pow(1000,i))] + mad[i] + ' ' + word;
      } else {
        word = tens[Math.floor(tempNumber/(10*Math.pow(1000,i)))] + '-' + first[Math.floor(tempNumber/Math.pow(1000,i))%10] + mad[i] + ' ' + word;
      }
    }

    tempNumber = number%(Math.pow(1000,i+1));
    if (Math.floor(tempNumber/(100*Math.pow(1000,i))) !== 0) word = first[Math.floor(tempNumber/(100*Math.pow(1000,i)))] + 'hunderd ' + word;
  }
    return word;
}

console.log(NumInWords(89754697976431))

And the result is :

eighty-nine trillion seven hundred fifty-four billion six hundred ninety-seven million nine hundred seventy-six thousand four hundred thirty-one