taro ref & wx.createSeletorQuery

taro ref & wx.createSeletorQuery

https://developers.weixin.qq.com/miniprogram/dev/api/wxml/wx.createSelectorQuery.html

https://nervjs.github.io/taro/docs/ref.html

const query = wx.createSelectorQuery()
query.select('#the-id').boundingClientRect()
query.selectViewport().scrollOffset()
query.exec(function(res){
  res[0].top       // #the-id节点的上边界坐标
  res[1].scrollTop // 显示区域的竖直滚动位置
})

HTML query selector

https://wiki.developer.mozilla.org/en-US/docs/Web/API/Element/querySelector

https://wiki.developer.mozilla.org/en-US/docs/Web/API/Element/querySelectorAll

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