Fibonacci Generator in Javascript for #Code140. Requires BigInteger by SilentMatt. Working web application using below code can be found at http://www.danwilkerson.com/apps/code140/fibonacci/fibonacci.html

gistfile1.txt

/***** Dan Wilkerson * @notdanwilkerson *****/

// Simple function to return the value of the nth number of the Fibonacci sequence. 
// Requires BigInteger by silentmatt ( http://silentmatt.com/biginteger/ )

// To see a working webapplication that uses this code visit
// http://www.danwilkerson.com/apps/code140/fibonacci/fibonacci.html

function fibonachocheese(number){
    if (number % 1 !== 0 || number < 0 || number > 100000) {
        return 'Please enter a valid integer from 0 - 100000';
    } else {
        var numOne = BigInteger._1;
        var numTwo = BigInteger._0;
        var num = BigInteger._0;
        for(i = 0; i < number; i ++) {
            num = numOne.add(numTwo);
            numOne = numTwo;
            numTwo === BigInteger._0 ? numTwo = BigInteger._1 : numTwo = num;
        }
        number === BigInteger._1 ? num = BigInteger._1 : '';
        return num;
    }
}