004.js

// A palindromic number reads the same both ways. The largest palindrome made 
// from the product of two 2-digit numbers is 9009 = 91 x 99.

// Find the largest palindrome made from the product of two 3-digit numbers.

function isPalindrome(n) {
    var temp = n;
    var reverse = 0;
    while (temp !== 0) {
        reverse = reverse * 10 + temp % 10;
        temp = Math.floor(temp/10);
    }
    return reverse === n;
}

function maxProductPalindrome(min, max) {
    var maximum = 0;
    var product;
    var a = min;
    while (a <= max) {
        var b = min;
        while (b <= max ) {
            product = a * b;
            if (isPalindrome(product) && product > maximum) {
                maximum = product;
            }
            b++;
        }
        a++;
    }
    return maximum;
}

console.log( maxProductPalindrome(100, 999) );