dBtnUplodSetCover.click(function(e) {
  e.preventDefault();

  FB.login(
    function(response) {
      if (response.authResponse) {
        var access_token = FB.getAuthResponse()['accessToken'];
        var linkTemp = '';
        userID = FB.getAuthResponse()['userID'];

        //上傳圖片，在此API後必須加上access token才能運作
        FB.api(
          '/me/photos?access_token=' + access_token,
          'post',
          {
            url: IMAGE_SRC, //上傳圖片的網址
            access_token: access_token,
          },
          function(resp) {
            if (!resp || resp.error) {
              console.log('Error occured: ' + JSON.stringify(resp.error));
            } else {
              //上傳成功
              //取得photo id，準備進一步取得設定photo的網址
              var photoID = resp.id;

              FB.api('/' + photoID, function(res) {
                //makeprofile: 設定為profile image的參數
                //取得照片網址後，將其append到編輯網址之後
                linkTemp = res.link + '&makeprofile=1';

                //轉址到Facebook網站，此照片切裁、設定profile image的頁面
                location.replace(linkTemp);
              });
            }
          },
        );
      } else {
        console.log('User cancelled login or did not fully authorize.');
      }
    },
    { scope: 'publish_stream, user_photos' },
  );
});