Limitation to 3 quiz buttons

[Falseclock]

Just simply replace button_1, button_2, button_3 with array:

        buttons: [
                        {value : '11', name: "Option 33"},
                        {value : '20', name: "Option 66"},
                        {value : '61', name: "Option 91"},
                        {value : '42', name: "Option 55"},
                        {value : '99', name: "Option 42"}
                    ]

callback handler returns reference to the button. value can be accessed by reading data-quiz-value property