一部分功能在实现操作的时候，它的错误判断是标注，显示出错误页面。然后，

When some functions are implemented, their wrong judgment is marked and an error page is displayed. Then, return to the previous page every few seconds: if there is an error in the other part, no error handling is performed because there is no need. For example, when querying by department, there is no need to judge the operation page. There is also a module that will not execute and exit the system if it fails. Most of the functions have implemented error message prompts.

When some functions are operated, its wrong judgment is to mark and display the error page. Then, return to the previous page every few seconds: if there is an error in another part, there is no error processing, because there is no need to judge the operation page when querying by department. Also, if there is an error, it will not execute and exit a module of the system. Most functions realize error message prompt.

When some functions are implemented, their error judgment is annotation, and an error page is displayed. Then, every few seconds, return to the next page: if the other part goes wrong, there is no error handling because there is no need. For example, there is no need to judge the operation page when querying by the department. If there is an error, it will not execute and exit a module of this system. Most of the functions have realized the prompt of error information.