Numbers in Words in JS

in_words.js

var inWords = function(number){
  var numberHash = {
    0:"", 1:"one", 2:"two", 3:"three", 4: "four", 5: "five", 6: "six", 7: "seven", 8: "eight", 9: "nine", 10: "ten",
    11: "eleven", 12: "twelve", 13: "thirteen", 14: "fourteen", 15: "fifteen", 16: "sixteen", 17: "seventeen", 18: "eighteen",
    19: "nineteen", 20: "twenty", 30: "thirty", 40: "forty", 50: "fifty", 60: "sixty", 70: "seventy", 80: "eighty", 90: "ninety"
  };

    if(number <= 20){
      return numberHash[number];
    }

    else if(20 < number && number < 100){
      var tens = Math.floor(number / 10) * 10;
      var ones = number % 10;
      return numberHash[tens] + " " + numberHash[ones];
    }

    else{
      var hundreds = Math.floor(number / 100) * 100;
      if(number - hundreds <= 20){
        return numberHash[(hundreds/100)] + " hundred " + numberHash[(number-hundreds)];
      }
      else{
        var tens = (Math.floor((number - hundreds) / 10)) * 10;
        var ones = (number - hundreds) % 10;
        return numberHash[(hundreds/100)] + " hundred " + numberHash[tens] + " " + numberHash[ones];
      }
    };
};