simple code to convert numbers to roman numerals

toRoman.js

function toRoman(num) {
    var decimal = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1];
    var roman = ["M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"];
    var result = '';

    for (var i = 0; i <= decimal.length; i++) {//look up the array decimal for values
        //looping over every element of arrays
        while (num % decimal[i] < num) {
            //keep trying the same number until we need to move to a smaller one
            result =result+ roman[i];
            //add the matching roman number to our result 
            num =num-decimal[i];
            //subtract decimal value of the roman number from our number
        }//end while loop

    }//end for loop

    return result;
} //end function statement
//call function example 
toRoman(11)