anchor.diff:  //和学生一样
     var url = "$host/teacher/{teaid_x}"; // 链接到学生主页面
     var request = HttpRequest.getString(url).then(onDataLoaded_tea);
  +  var url1 = "$host/student/{stuid_x}"; // 链接到学生主页面
  +  var request1= HttpRequest.getString(url).then(onDataLoaded_tea_stu);
   }
   
   
  
positive.code: 
  */
  }
  /*
  
  /// 显示成绩分析扇形图
  
negative.code: onDataLoaded_tea(responseText) {
  
    var jsonString = responseText;
    var tea_allDATA1= JSON.decode(jsonString);
    var tea_allDATA2= JSON.decode( tea_allDATA1["teaname0"].toString());
    querySelector('#tea_name').text=tea_allDATA2["teaname"];
    querySelector('#tea_id').text=tea_allDATA2["teaid"];
  /*var i;
  