        var file = this.files[0]
            upload(file)
          },
          false,
        )
        const res = await axios({
          url: `/playlist/detail?id=${playlist_id}&timestamp=${Date.now()}`,
        })
        document.querySelector('#playlist_cover').src = res.data.playlist.coverImgUrl
      }
      async function login() {
        const res = await axios({
          url: `/login/cellphone?phone=${phone}&password=${password}`,
          withCredentials: true, //关键
        })
        c