getData(){
  var that  = this;
  // 获取json数据来渲染组件
  this.axios.get("/static/json/quality.json")
  .then(function(res){
    // console.log(res.data)
    that.quality = res.data;
    let a = JSON.parse(res.data)
    console.log(a)
  })
  .catch(function(){
    console.log("wrong")
  })
}