--- title: Mermaid Diagrams Test date: 2025-08-20T10:00:00+08:00 collections: - Tests categories: - Markdown - Shortcodes tags: - Mermaid - Diagrams mermaid: zenuml: https://cdn.jsdelivr.net/npm/@mermaid-js/mermaid-zenuml/dist/mermaid-zenuml.esm.min.mjs --- The FixIt theme supports two ways to use Mermaid: code block syntax and shortcode syntax. ```mermaid {wrapper=false} --- config: theme: 'forest' --- graph TD a --> b ``` ## Flowchart ```mermaid flowchart TD A[Start] --> B{Is it?} B -->|Yes| C[OK] C --> D[Rethink] D --> B B ---->|No| E[End] ``` ## Sequence Diagram ```mermaid sequenceDiagram participant Alice participant Bob Alice->>John: Hello John, how are you? loop Healthcheck John->>John: Fight against hypochondria end Note right of John: Rational thoughts
prevail! John-->>Alice: Great! John->>Bob: How about you? Bob-->>John: Jolly good! ``` ## Gantt Chart {{< mermaid >}} gantt title A Gantt Diagram dateFormat YYYY-MM-DD section Section A task :a1, 2014-01-01, 30d Another task :after a1 , 20d section Another Task in sec :2014-01-12 , 12d another task : 24d {{< /mermaid >}} ## Class Diagram ```mermaid classDiagram Animal <|-- Duck Animal <|-- Fish Animal <|-- Zebra Animal : +int age Animal : +String gender Animal: +isMammal() Animal: +mate() class Duck{ +String beakColor +swim() +quack() } class Fish{ -int sizeInFeet -canEat() } class Zebra{ +bool is_wild +run() } ``` ## State Diagram ```mermaid stateDiagram-v2 [_] --> Still Still --> [_] Still --> Moving Moving --> Still Moving --> Crash Crash --> [*] ``` ## Entity Relationship Diagram ```mermaid erDiagram CUSTOMER ||--o{ ORDER : places ORDER ||--|{ LINE-ITEM : contains CUSTOMER }|..|{ DELIVERY-ADDRESS : uses CUSTOMER { string name string custNumber string sector } ORDER { int orderNumber string deliveryAddress } LINE-ITEM { string productCode int quantity float pricePerUnit } ``` ## User Journey {{< mermaid >}} journey title My working day section Go to work Make tea: 5: Me Go upstairs: 3: Me Do work: 1: Me, Cat section Go home Go downstairs: 5: Me Sit down: 5: Me {{< /mermaid >}} ## Git Graph ```mermaid gitGraph commit branch hotfix checkout hotfix commit branch develop checkout develop commit id:"ash" tag:"abc" branch featureB checkout featureB commit type:HIGHLIGHT checkout main checkout hotfix commit type:NORMAL checkout develop commit type:REVERSE checkout featureB commit checkout main merge hotfix checkout featureB commit checkout develop branch featureA commit checkout develop merge hotfix checkout featureA commit checkout featureB commit checkout develop merge featureA branch release checkout release commit checkout main commit checkout release merge main checkout develop merge release ``` ## Pie Chart {{< mermaid >}} pie title What Voldemort doesn't have? "FRIENDS" : 2 "FAMILY" : 3 "NOSE" : 45 {{< /mermaid >}} ## Quadrant Chart ```mermaid quadrantChart title Reach and influence x-axis Low Reach --> High Reach y-axis Low Influence --> High Influence quadrant-1 We should expand quadrant-2 Need to promote quadrant-3 Re-evaluate quadrant-4 May be improved Campaign A: [0.3, 0.6] Campaign B: [0.45, 0.23] Campaign C: [0.57, 0.69] Campaign D: [0.78, 0.34] Campaign E: [0.40, 0.34] ``` ## Timeline ```mermaid timeline title History of Social Media Platform 2002 : LinkedIn 2003 : MySpace : Skype 2004 : Facebook : Gmail 2005 : Youtube 2006 : Twitter 2007 : FourSquare 2008 : Github 2010 : Instagram 2011 : Snapchat 2012 : Discord ``` ## Mindmap ```mermaid mindmap root((mindmap)) Origins Long history ::icon(fa fa-book) Popularisation British popular psychology author Tony Buzan Research On effectiveness
and features On Automatic creation Uses Creative techniques Strategic planning Argument mapping Tools Pen and paper Mermaid ``` ## XY Chart {{< mermaid >}} xychart-beta title "Sales Revenue" x-axis [jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec] y-axis "Revenue (in $)" 4000 --> 11000 bar [5000, 6000, 7500, 8200, 9500, 10500, 11000, 10200, 9200, 8500, 7000, 6000] line [5000, 6000, 7500, 8200, 9500, 10500, 11000, 10200, 9200, 8500, 7000, 6000] {{< /mermaid >}} ## Requirement Diagram ```mermaid requirementDiagram requirement test_req { id: 1 text: the test text. risk: high verifymethod: test } element test_entity { type: simulation } test_entity - satisfies -> test_req ``` ## C4 Architecture ```mermaid C4Context title System Context diagram for Internet Banking System Enterprise_Boundary(b0, "BankBoundary0") { Person(customerA, "Banking Customer A", "A customer of the bank, with personal bank accounts.") Person(customerB, "Banking Customer B") Person_Ext(customerC, "Banking Customer C", "desc") Person(customerD, "Banking Customer D", "A customer of the bank,
with personal bank accounts.") System(SystemAA, "Internet Banking System", "Allows customers to view information about their bank accounts, and make payments.") Enterprise_Boundary(b1, "BankBoundary") { SystemDb_Ext(SystemE, "Mainframe Banking System", "Stores all of the core banking information about customers, accounts, transactions, etc.") System_Boundary(b2, "BankBoundary2") { System(SystemA, "Banking System A") System(SystemB, "Banking System B", "A system of the bank, with personal bank accounts. next line.") } System_Ext(SystemC, "E-mail system", "The internal Microsoft Exchange e-mail system.") SystemDb(SystemD, "Banking System D Database", "A system of the bank, with personal bank accounts.") Boundary(b3, "BankBoundary3", "boundary") { SystemQueue(SystemF, "Banking System F Queue", "A system of the bank.") SystemQueue_Ext(SystemG, "Banking System G Queue", "A system of the bank, with personal bank accounts.") } } } BiRel(customerA, SystemAA, "Uses") BiRel(SystemAA, SystemE, "Uses") Rel(SystemAA, SystemC, "Sends e-mails", "SMTP") Rel(SystemC, customerA, "Sends e-mails to") UpdateElementStyle(customerA, $fontColor="red", $bgColor="grey", $borderColor="red") UpdateRelStyle(customerA, SystemAA, $textColor="blue", $lineColor="blue", $offsetX="5") UpdateRelStyle(SystemAA, SystemE, $textColor="blue", $lineColor="blue", $offsetY="-10") UpdateRelStyle(SystemAA, SystemC, $textColor="blue", $lineColor="blue", $offsetY="-40", $offsetX="-50") UpdateRelStyle(SystemC, customerA, $textColor="red", $lineColor="red", $offsetX="-50", $offsetY="20") UpdateLayoutConfig($c4ShapeInRow="3", $c4BoundaryInRow="1") ``` ## ZenUML {{< mermaid >}} zenuml title Demo Alice->John: Hello John, how are you? John->Alice: Great! Alice->John: See you later! {{< /mermaid >}} ## Sankey Diagram ```mermaid --- config: sankey: showValues: false --- sankey-beta Agricultural 'waste',Bio-conversion,124.729 Bio-conversion,Liquid,0.597 Bio-conversion,Losses,26.862 Bio-conversion,Solid,280.322 Bio-conversion,Gas,81.144 Biofuel imports,Liquid,35 Biomass imports,Solid,35 Coal imports,Coal,11.606 Coal reserves,Coal,63.965 Coal,Solid,75.571 District heating,Industry,10.639 District heating,Heating and cooling - commercial,22.505 District heating,Heating and cooling - homes,46.184 Electricity grid,Over generation / exports,104.453 Electricity grid,Heating and cooling - homes,113.726 Electricity grid,H2 conversion,27.14 Electricity grid,Industry,342.165 Electricity grid,Road transport,37.797 Electricity grid,Agriculture,4.412 Electricity grid,Heating and cooling - commercial,40.858 Electricity grid,Losses,56.691 Electricity grid,Rail transport,7.863 Electricity grid,Lighting & appliances - commercial,90.008 Electricity grid,Lighting & appliances - homes,93.494 Gas imports,Ngas,40.719 Gas reserves,Ngas,82.233 Gas,Heating and cooling - commercial,0.129 Gas,Losses,1.401 Gas,Thermal generation,151.891 Gas,Agriculture,2.096 Gas,Industry,48.58 Geothermal,Electricity grid,7.013 H2 conversion,H2,20.897 H2 conversion,Losses,6.242 H2,Road transport,20.897 Hydro,Electricity grid,6.995 Liquid,Industry,121.066 Liquid,International shipping,128.69 Liquid,Road transport,135.835 Liquid,Domestic aviation,14.458 Liquid,International aviation,206.267 Liquid,Agriculture,3.64 Liquid,National navigation,33.218 Liquid,Rail transport,4.413 Marine algae,Bio-conversion,4.375 Ngas,Gas,122.952 Nuclear,Thermal generation,839.978 Oil imports,Oil,504.287 Oil reserves,Oil,107.703 Oil,Liquid,611.99 Other waste,Solid,56.587 Other waste,Bio-conversion,77.81 Pumped heat,Heating and cooling - homes,193.026 Pumped heat,Heating and cooling - commercial,70.672 Solar PV,Electricity grid,59.901 Solar Thermal,Heating and cooling - homes,19.263 Solar,Solar Thermal,19.263 Solar,Solar PV,59.901 Solid,Agriculture,0.882 Solid,Thermal generation,400.12 Solid,Industry,46.477 Thermal generation,Electricity grid,525.531 Thermal generation,Losses,787.129 Thermal generation,District heating,79.329 Tidal,Electricity grid,9.452 UK land based bioenergy,Bio-conversion,182.01 Wave,Electricity grid,19.013 Wind,Electricity grid,289.366 ``` ## Block Diagram {{< mermaid >}} block-beta columns 1 db(("DB")) blockArrowId6<["   "]>(down) block:ID A B["A wide one in the middle"] C end space D ID --> D C --> D style B fill:#969,stroke:#333,stroke-width:4px {{< /mermaid >}} ## Packet Diagram ```mermaid packet-beta title Sample packet 0-15: "Source Port" 16-31: "Destination Port" 32-63: "Sequence Number" 64-95: "Acknowledgment Number" 96-99: "Data Offset" 100-105: "Reserved" 106: "URG" 107: "ACK" 108: "PSH" 109: "RST" 110: "SYN" 111: "FIN" 112-127: "Window" 128-143: "Checksum" 144-159: "Urgent Pointer" 160-191: "Options and Padding" 192-223: "Data (variable length)" ``` ## Kanban ```mermaid kanban Todo [Create a git repository] [Write some code] [Commit the code] In Progress [Push to main] Done [Merge PR] ``` ## Architecture Diagram ```mermaid architecture-beta group api(cloud)[API] service db(database)[Database] in api service disk1(disk)[Storage] in api service disk2(disk)[Storage] in api service server(server)[Server] in api db:L -- R:server disk1:T -- B:server disk2:T -- B:db ``` ## Radar Chart ```mermaid --- title: "Grades" --- radar-beta axis m["Math"], s["Science"], e["English"] axis h["History"], g["Geography"], a["Art"] curve a["Alice"]{85, 90, 80, 70, 75, 90} curve b["Bob"]{70, 75, 85, 80, 90, 85} max 100 min 0 ``` ## Treemap ```mermaid --- config: treemap: valueFormat: '$0,0' --- treemap-beta "Budget" "Operations" "Salaries": 700000 "Equipment": 200000 "Supplies": 100000 "Marketing" "Advertising": 400000 "Events": 100000 ``` --- The above test cases cover the main Mermaid diagram types, including: **Core Diagrams:** - Flowcharts, Sequence Diagrams, Gantt Charts - Class Diagrams, State Diagrams, Entity Relationship Diagrams - User Journey, Git Graph, Pie Charts **Advanced Diagrams:** - Quadrant Charts, Timeline, Mindmaps - XY Charts, Requirement Diagrams, C4 Architecture - ZenUML, Sankey, Block Diagrams **Experimental Diagrams (🔥):** - Packet, Kanban, Architecture - Radar Charts, Treemap Each diagram type provides examples using both code block and shortcode syntax.