onPageScroll: function (e) { if (e.scrollTop > 100) { this.setData({ floorstatus: true }); } else { this.setData({ floorstatus: false }); } }, goTop:function(){ wx.pageScrollTo({ scrollTop: 0, duration: 300 }) },
原文：https://www.cnblogs.com/yaoyao-/p/11742318.html