```mermaid
sequenceDiagram
    participant browser
    participant server
    
    browser->>server: POST https://studies.cs.helsinki.fi/exampleapp/new_note
    activate server
    server-->>data.jason: Save new note

    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/notes
    activate server
    server-->>browser: HTML document
    deactivate server

    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/main.css
    activate server
    server-->>browser: the CSS file
    deactivate server

    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/main.js
    activate server
    server-->>browser: the JavaScript file
    deactivate server

    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/data.json
    activate server
    server-->>browser: [{ "content": "HTML is easy", "date": "2023-1-1" }, ... ]
    deactivate server


```

sequenceDiagram
    participant browser
    participant server
    
    browser->>server: POST https://studies.cs.helsinki.fi/exampleapp/new_note
    activate server
    server-->>data.jason: Save new note

    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/notes
    activate server
    server-->>browser: HTML document
    deactivate server

    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/main.css
    activate server
    server-->>browser: the CSS file
    deactivate server

    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/main.js
    activate server
    server-->>browser: the JavaScript file
    deactivate server
    
    browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/data.json
    activate server
    server-->>browser: [{ "content": "HTML is easy", "date": "2023-1-1" }, ... ]
    deactivate server

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