03. Next Prime Number.js

/*
    Numbers 03. Next Prime Number - Have the program find prime numbers until the user chooses to stop asking for the next one.
*/

var getNextPrimeNumber = (function () {
    "use strict";

    function isPrime(n) {
        var i;

        for (i = 2; i <= Math.sqrt(n); i++) {
            if (n % i === 0) {
                return false;
            }
        }

        return true;
    }

    var currentPrimeNumber = 2;

    return function () {
        while (!isPrime(currentPrimeNumber)) {
            currentPrimeNumber++;
        }

        return currentPrimeNumber++;
    };
}());

// Just call the function for getting the next number.
this.console.log(getNextPrimeNumber());