update

pbl.js

@@ -2133,7 +2133,7 @@ router.route('/getClassStudent').all((req, res, next) => {
     var json = queryString(req.url);
     getmysql(req, res, "getClassStudent", json['cid'], json['oid'], json['cn'], json['page'], json['num']);
 });
-//查询未在此班级的学生
+//添加学生到班级
 router.route('/addClassStudent').all((req, res, next) => {
     let cid = req.body[0].cid
     let student = JSON.parse(req.body[0].studnet)