danielrw7

function hasProperty(obj, prop) {
    return obj[prop] !== undefined;
};

Array.prototype.callFunction = function(target, key) {
    var args = [].splice.call(arguments, 0).slice(2);

    this.forEach(function(elem) {
        try {
            if (hasProperty(elem, key) && typeof elem[key] == 'function') {