Converting Number to Words Javascript Indian Format

The Below code is used for number to words conversion ( Indian Format). The logic used can be implement in any other language. I have used java script here but if you understand the logic then you can recreate it using any other language.

Enter the Number here.

The Code for the above logic is as follows.


<script language="javascript">


function numToString(x)
{
var r=0;
var txter=x;
var sizer=txter.length;
var numStr="";
if(isNaN(txter))
{
alert(" 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.
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!="")
{
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!="")
{
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!="")
{
str=onlyDigit(numStr)+ " Crores "+str;        //Appends the word Crores
}
}

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




function onlyDigit(n)
{
//Arrays to store the string equivalent of the number to convert in words
var units=['','One','Two','Three','Four','Five','Six','Seven','Eight','Nine'];
var randomer=['','Eleven','Twelve','Thirteen','Fourteen','Fifteen','Sixteen','Seventeen','Eighteen','Nineteen'];
var tens=['','Ten','Twenty','Thirty','Forty','Fifty','Sixty','Seventy','Eighty','Ninety'];
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]+" Hundred "+str;
}

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

</script>




<form name="fm" id="fm">

<input type="text"  name="txtinput" id="txtinput" maxlength="9" />
<input type="button" onclick="numToString(txtinput.value)" id="show" />

</form>