const query = wx.createSelectorQuery()

query.select(id).boundingClientRect()

setTimeout(function () {

query.selectViewport().scrollOffset()

query.exec(function (res) {

console.log(res)

that.setData({

scrollTopPlay: res[1].scrollTop,

bottomHeight: res[0].height

});

})

}, 400)

获取到的scrollTop的值一直是0

 有没有大神指点一下啊