聊天 保证聊天置地

setTimeout(function () {

let query = wx.createSelectorQuery();

query.select('#haha').boundingClientRect()

query.exec(function (res) {

console.log(res[0].height);

that.setData({

changfocus: res[0].height

})

})

}, 200);

 

 

<scroll-view scroll-y class='cont-box' scroll-top="{{changfocus}}" bindscrolltoupper="upDatafn">