微信小程序页面滚动到指定位置代码实例

var me = this;
   var query = wx.createSelectorQuery().in(me);
   query.selectViewport().scrollOffset()
   query.select("#ment").boundingClientRect();
   query.exec(function (res) {
    console.log(res);
    var miss = res[0].scrollTop + res[1]. - 10;
    wx.pageScrollTo({
     scrollTop: miss,
     duration: 300
    });
     
   });