js 文件上传

//上传头像到服务器
  function uploadFile() {
      console.log(344)
      var pic = $('#upload')[0].files[0];
      var file = new FormData();
      file.append('image', pic);
      $.ajax({
          url: "/uploadImg",
          type: "post",
          data: file,
          cache: false,
          contentType: false,
          processData: false,
          success: function(data) {
              console.log(data);
              var res = data;
              $("#test").append("<img src='/" + res + "'>")
          }
      });
  }