Frontend development-preliminary business logic of the comment area on the playback page -- logic

Frontend development-preliminary business logic of the comment area on the playback page -- logic

1. This time mainly involves data interaction between the front and back ends.

Jquery Tutorial:

Http://www.w3school.com.cn/jquery/index.asp

 

2. Engineering address: https://github.com/digitalClass/web_page

Website publishing address: http: // 115.28.30.25: 8029/

 

3. Business Logic description:

1. The preliminary assumption is as follows:

1. After the user clicks submit, the front-end will post the comment content and user userid to the backend,

1. The currently scheduled route is/Addcomments /,Modifiable

2. In addition to some data provided by the backend at the beginning,

3. Backend needs are also involvedLogin User's UseridAndLogin UserUsernameThese two attributes enable the front-end to display data after submission.

2. The backend needs to return a json data structure:

1. If the successful code is marked as 0 and the code is not 0, the front-end considers the submission failed.

1. Shape:

1. {'Code': 0}

2. At the same time, the backend can return a msg field to indicate the error message \

1. Shape:

1. {'Msg ': "Unknown error "}

 

4. Display Results

Comment page

 

Error message:

 

 

Dynamic comment loading effect: