正在跳转至 https://github.com/simon9124/my_demos/blob/master/javascript%E9%AB%98%E7%BA%A7%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1%EF%BC%88%E7%AC%AC%E5%9B%9B%E7%89%88%EF%BC%89/%E7%AC%AC11%E7%AB%A0%20%E6%9C%9F%E7%BA%A6%E4%B8%8E%E5%BC%82%E6%AD%A5%E5%87%BD%E6%95%B0/button.html