[wechat applet to obtain the height of custom tabbar] is absolutely available!!!

In the establishment of ready() In order to get ！！！！

In the establishment of ready() In order to get ！！！！

In the establishment of ready() In order to get ！！！！

 ready() {
    
    //  cache tabber The height of the fence 
    const query = wx.createSelectorQuery().in(this);
    query.select('.tab-bar').boundingClientRect((rect) => {
    
      console.log(rect.height)
      wx.setStorageSync('tabbarHeight', rect.height)
    }).exec()
  },