微信小程序实现点击返回顶层的方法

   客服电话顶层

 var app = getApp(); Page({ data: { hidden: true, list: [], scrollTop: { scroll_top: 0, goTop_show: false }, scrollHeight: 0, floorstatus:true, sortArr:[ { id: 1, img: "../../images/2.jpg-600", title: "君御豪园住宅", introduction: "杭州不限购不限贷口住宅", money: 5000, vperson: 115, tperson: 0 } ], }, scrollTopFun: function (e) { console.log(e.detail); if (e.detail.scrollTop > 300) {//触发gotop的显示条件 this.setData({ 'scrollTop.goTop_show': true }); } else { this.setData({ 'scrollTop.goTop_show': false }); } }, goTopFun: function (e) { var _top = this.data.scrollTop.scroll_top;//发现设置scroll-top值不能和上一次的值一样，否则无效，所以这里加了个判断 if (_top == 0) { _top = 1; } else { _top = 0; } this.setData({ 'scrollTop.scroll_top': _top }); }, /** * 生命周期函数--监听页面加载 */ onLoad: function (options) { var that = this; wx.getSystemInfo({ success: function (res) { that.setData({ scrollHeight: res.windowHeight }); } }); }, }） 

 .fliexBox{ width: 100rpx; height: 50rpx; background-color: #5db13b; color: #ffffff; text-align: center; position: fixed; right: 0rpx; bottom: 85rpx; border-radius: 20rpx 0rpx 0rpx 20rpx; font-size: 26rpx; line-height: 50rpx; opacity: .6; } .callOur{ bottom: 20rpx; } contact-button{ opacity: 0; position: absolute; }