PrintByDivisors: my resolution for FizzBuzz problem

print-by-divisors.js

var PrintByDivisors = {
    opts: {
        begin: 1,
        end: 100,
        numbers: [15, 3, 5],
        outputs: ['SouDev', 'Sou', 'Dev']
    },
 
    extend: function(target, source) {
        target = target || {};
        for (var prop in source) {
            if (typeof source[prop] === 'object') {
                target[prop] = this.extend(target[prop], source[prop]);
            } else {
                target[prop] = source[prop];
            }
        }
        return target;
    },
 
    init: function(opts){
        if (typeof opts === 'object') {
            this.extend(this.opts, opts);
        }
 
        for (var number = this.opts.begin; number <= this.opts.end; number++) {
            console.log(this.getOutputByNumber(number));
        }
    },
 
    getOutputByNumber: function(number){
        var stringReturn = number,
            numbersLength = this.opts.numbers.length
        ;
        for (var divisor = 0; divisor < numbersLength; divisor++) {
            if (this.isMultiple(number, this.opts.numbers[divisor])) {
                stringReturn = typeof stringReturn !== 'number' ? stringReturn + this.opts.outputs[divisor] : this.opts.outputs[divisor];
                //break;
            }
        }
        return stringReturn;
    },
 
    isMultiple: function(n, d) {
        return n % d === 0;
    }
};
 
//PrintByDivisors.init();
 
// Passing params
 
//PrintByDivisors.init({
//    begin: 1,
//    end: 100,
//    numbers: [20, 15, 10, 3, 5],
//    outputs: ['Vinte', 'Quinze', 'Dez', 'Tres', 'Cinco']
//});