Javascript implementation for converting price to Pakistani/Indian rupees format strings

PriceNumberToString.js

export function numToString(x) {
  var r = 0;
  var txter = x;
  var sizer = txter.length;
  var numStr = "";
  if (isNaN(txter)) {
    return (" Invalid number");
    // exit();
  }
  var n = parseInt(x);
  var places = 0;
  var str = "";
  var entry = 0;
  while (n >= 1) {
    r = parseInt(n % 10);
    if (places < 3 && entry == 0) {
      numStr = txter.substring(txter.length - 0, txter.length - 3) // Checks for 1 to 999.
      if (numStr != '000') {
        str = onlyDigit(numStr);
        if(numStr[2] == '0') {
          str = str + '0'
        }
      }
      // str=onlyDigit(numStr); //Calls function for last 3 digits of the value.
      entry = 1;
    }

    if (places == 3) {
      numStr = txter.substring(txter.length - 5, txter.length - 3)
      if (numStr != "" && numStr != "00") {
        if (numStr[1] == '0' && numStr != '10') {
          str = onlyDigit(numStr) + "0 Thousand " + str;
        } else {
          str = onlyDigit(numStr) + " Thousand " + str;
        }
        // str=onlyDigit(numStr)+ " Thousand "+str;
      }
    }

    if (places == 5) {
      numStr = txter.substring(txter.length - 7, txter.length - 5) //Substring for 5 place to 7 place of the string
      if (numStr != "" && numStr != "00") {
        if (numStr[1] == '0' && numStr != '10') {
          str = onlyDigit(numStr) + "0 Lakhs " + str;
        } else {
          str = onlyDigit(numStr) + " Lakhs " + str;
        }
        // str=onlyDigit(numStr)+ " Lakhs "+str; //Appends the word lakhs to it
      }
    }

    if (places == 6) {
      numStr = txter.substring(txter.length - 9, txter.length - 7)  //Substring for 7 place to 8 place of the string
      if (numStr != "" && numStr != "00") {
        if (numStr[1] == '0' && numStr != '10') {
          str = onlyDigit(numStr) + "0 Crores " + str;
        } else {
          str = onlyDigit(numStr) + " Crores " + str;
        }       //Appends the word Crores
      }
    }

    n = parseInt(n / 10);
    places++;
  }
  return (str);
}




function onlyDigit(n) {
  //Arrays to store the string equivalent of the number to convert in words
  var units = ['', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
  var randomer = ['', '11', '12', '13', '14', '15', '16', '17', '18', '19'];
  var tens = ['', '10', '2', '3', '4', '5', '6', '7', '8', '9'];
  var r = 0;
  var num = parseInt(n);
  var str = "";
  var pl = "";
  var tenser = "";
  while (num >= 1) {
    r = parseInt(num % 10);
    tenser = r + tenser;
    if (tenser <= 19 && tenser > 10) //Logic for 10 to 19 numbers
    {
      str = randomer[tenser - 10];
    }
    else {
      if (pl == 0)        //If units place then call units array.
      {
        str = units[r];
      }
      else if (pl == 1)    //If tens place then call tens array.
      {
        str = tens[r] + str;
      }
    }
    if (pl == 2)        //If hundreds place then call units array.
    {
      str = units[r] + str;
    }

    num = parseInt(num / 10);
    pl++;
  }
  return str;
}

// found a part of this on an online forum and modified it to fit to my needs. Fixed it for every scenario as far as i could. Works really good.