如果删除postStepCallback函数，您的代码将按预期工作:

You code works as expected if you remove the postStepCallback function:

postStepCallback : function (index, tip) {
      if (index == 2) {
        $(this).joyride('set_li', false, 1);
      }
    }

如果您不需要它，请不要使用它.

if you don't need it, don't use it.

演示: http://jsfiddle.net/IrvinDominin/jeWTv/