Problem Six

six.js

var sums = 0,
    smallest = 1,
    largest = 100,
    sumOfSquares = 0,
    squareOfSums = 0;

for ( i = smallest; i <= largest; i++ ) {
    sumOfSquares += i * i;
}

for ( var i = smallest; i <= largest; i++ ) {
    sums += i;
}

squareOfSums = sums * sums;

document.write( squareOfSums - sumOfSquares );