Cycle through an array

cyclemaker.js

var cyclemaker = function (arr) {

    var i=0;

    var end=arr.length;

    return function () {
        var element = arr[i];

        if (i == end) {
            i = 0;
        } else {
            i++;
        }

        if (element === undefined) {
            return '';

        } else {
            return element;
        }
    };

};

var feelings = ['happy', 'sad', 'bored'];
var f1 = cyclemaker(feelings);
var f2 = cyclemaker(feelings);