Mermaid JS: Finally There's A Great UML & Diagram Drawing Tool
ArjanCodes
View ChannelAbout
On this channel, I post videos about programming and software design to help you take your coding skills to the next level. I'm an entrepreneur and a university lecturer in computer science, with more than 20 years of experience in software development and design. If you're a software developer and you want to improve your development skills, and learn more about programming in general, make sure to subscribe for helpful videos. I post a video here every Friday. If you have any suggestion for a topic you'd like me to cover, just leave a comment on any of my videos and I'll take it under consideration. Thanks for watching!
Latest Posts
Video Description
💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. This video covers Mermaid JS. I've been struggling finding the right tool for drawing diagrams. But that completely changed when I stumbled on Mermaid. In this video I go over 4 different diagram types I find really useful when designing software, and show you how to really easily draw them using Mermaid. Read more about Mermaid here: https://mermaid-js.github.io. Mermaid live editor: https://mermaid.live 🎓 ArjanCodes Courses: https://www.arjancodes.com/courses/ 🔖 Chapters: 0:00 Intro 1:14 Adding the Mermaid Extension to VS Code 2:16 Mermaid.live 3:44 Flowcharts 9:45 Sequence diagrams 15:18 Class diagram 24:21 Entity relationship diagram #arjancodes #softwaredesign #python
You May Also Like
Upgrade Your iPhone 13 Pro Max
AI-recommended products based on this video
![iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White](https://m.media-amazon.com/images/I/61i3XjcGu1L._AC_SL1500_.jpg)
iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White

Kaistyle for Magsafe Car Mount【20 Strong Magnets】 Magnetic Phone Holder for Car Phone Holder Mount Dash Cell Phone Holders for Your Car Accessories for Women Men for iPhone 17 Pro Max 16 15 14 13 12 ClimatePartner certified
![Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard](https://m.media-amazon.com/images/I/712lUnThXpL._AC_UL960_FMwebp_QL65_.jpg)
Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard

LISEN Retractable Car Charger, 69W USB C Car Accessories Adapter for iPhone 17 USB C Charger Fast Charging, Gifts for Women Men, Travel Essentials, for iPhone 17 Pro Max Air 16 15 14 13 12 Samsung S25

Belkin BoostCharge Lightning Cable - 6.6ft/2M - MFi Certified Apple iPhone Charger USB to Lightning Cable - iPhone Cable - iPhone Charger Cord - Apple Charger - USB Phone Charger - Black

Wireless Bluetooth Mouse for Apple iPad iPhone MacBook Android Samsung Tablet Phone Dual-Mode Rechargeable 2.4G Portable Computer Mice for Windows Laptop Notebook PC Mac Desktop USB Receiver (Black)

Apple EarPods Headphones with Lightning Connector, Wired Ear Buds for iPhone with Built-in Remote to Control Music, Phone Calls, and Volume

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone

Belkin BoostCharge Lightning Cable - 6.6ft/2M - MFi Certified Apple iPhone Charger USB to Lightning Cable - iPhone Cable - iPhone Charger Cord - Apple Charger - USB Phone Charger - Black

Soundcore by Anker P20i True Wireless Earbuds, 10mm Drivers with Big Bass, Bluetooth 5.3, 30H Long Playtime, Water-Resistant, 2 Mics for AI Clear Calls, 22 Preset EQs, Customization (Blue)

Soundcore Liberty 4 Pro by Anker, Noise Cancelling Wireless Earbuds, 7-Sensor and Real-Time Adaptive Noise Cancelling, 2× Faster Charging, Studio-Level Hi-Fi Music, Clear Calls with 6 Mics and AI

Soundcore by Anker Liberty 4 NC Wireless Earbuds, 98.5% Noise Reduction, Adaptive Noise Cancelling to Ears and Environment, Hi-Res Sound, 50H Battery, Wireless Charging, Bluetooth 5.3
![iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White](https://m.media-amazon.com/images/I/61i3XjcGu1L._AC_SL1500_.jpg)
iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White

Kaistyle for Magsafe Car Mount【20 Strong Magnets】 Magnetic Phone Holder for Car Phone Holder Mount Dash Cell Phone Holders for Your Car Accessories for Women Men for iPhone 17 Pro Max 16 15 14 13 12 ClimatePartner certified
![Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard](https://m.media-amazon.com/images/I/712lUnThXpL._AC_UL960_FMwebp_QL65_.jpg)
Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard

LISEN Retractable Car Charger, 69W USB C Car Accessories Adapter for iPhone 17 USB C Charger Fast Charging, Gifts for Women Men, Travel Essentials, for iPhone 17 Pro Max Air 16 15 14 13 12 Samsung S25

Wireless Earbuds Bluetooth V5.3 Headphones 50H Playback Deep Bass Stereo Ear Buds with LED Power Display Charging Case IPX7 Waterproof Earphones with Mic Headset for Laptop Pad Android/iOS Phones

Wireless Earbuds, Bluetooth 5.3 Headphones LED Power Display, 2025 New Wireless Earphones, 4 ENC Noise Cancelling Mic, HiFi Stereo, 48H Playtime Mini Case IP7 Waterproof for Sport Walk

Timberland PRO Men's Mudslinger Steel Safety Toe Waterproof Industrial Hiker Work Boot, Brown-2024 NEW, 7W

Timberland PRO Women's Reaxion Mid Composite Safety Toe Waterproof

Kaistyle for Magsafe Car Mount【20 Strong Magnets】 Magnetic Phone Holder for Car Phone Holder Mount Dash Cell Phone Holders for Your Car Accessories for Women Men for iPhone 17 Pro Max 16 15 14 13 12 ClimatePartner certified
![Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard](https://m.media-amazon.com/images/I/712lUnThXpL._AC_UL960_FMwebp_QL65_.jpg)
Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard
![iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White](https://m.media-amazon.com/images/I/61i3XjcGu1L._AC_SL1500_.jpg)
iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White

Kaistyle for Magsafe Car Mount【20 Strong Magnets】 Magnetic Phone Holder for Car Phone Holder Mount Dash Cell Phone Holders for Your Car Accessories for Women Men for iPhone 17 Pro Max 16 15 14 13 12 ClimatePartner certified
![Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard](https://m.media-amazon.com/images/I/712lUnThXpL._AC_UL960_FMwebp_QL65_.jpg)
Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard

LISEN Retractable Car Charger, 69W USB C Car Accessories Adapter for iPhone 17 USB C Charger Fast Charging, Gifts for Women Men, Travel Essentials, for iPhone 17 Pro Max Air 16 15 14 13 12 Samsung S25

Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

Soundcore by Anker Liberty 4 NC Wireless Earbuds, 98.5% Noise Reduction, Adaptive Noise Cancelling to Ears and Environment, Hi-Res Sound, 50H Battery, Wireless Charging, Bluetooth 5.3

Soundcore Liberty 4 Pro by Anker, Noise Cancelling Wireless Earbuds, 7-Sensor and Real-Time Adaptive Noise Cancelling, 2× Faster Charging, Studio-Level Hi-Fi Music, Clear Calls with 6 Mics and AI
![iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White](https://m.media-amazon.com/images/I/61i3XjcGu1L._AC_SL1500_.jpg)
iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White

Kaistyle for Magsafe Car Mount【20 Strong Magnets】 Magnetic Phone Holder for Car Phone Holder Mount Dash Cell Phone Holders for Your Car Accessories for Women Men for iPhone 17 Pro Max 16 15 14 13 12 ClimatePartner certified
![Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard](https://m.media-amazon.com/images/I/712lUnThXpL._AC_UL960_FMwebp_QL65_.jpg)
Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard

LISEN Retractable Car Charger, 69W USB C Car Accessories Adapter for iPhone 17 USB C Charger Fast Charging, Gifts for Women Men, Travel Essentials, for iPhone 17 Pro Max Air 16 15 14 13 12 Samsung S25
![iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White](https://m.media-amazon.com/images/I/61i3XjcGu1L._AC_SL1500_.jpg)
iPhone Charger Cord [MFi Certified] 3Pack 0.9M Lighting Cable Power Delivery Charging Cord Compatible with iPhone 14 13 13 Pro Max 12 12 Pro Max 11 XS XR X 8 iPad,White

Kaistyle for Magsafe Car Mount【20 Strong Magnets】 Magnetic Phone Holder for Car Phone Holder Mount Dash Cell Phone Holders for Your Car Accessories for Women Men for iPhone 17 Pro Max 16 15 14 13 12 ClimatePartner certified
![Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard](https://m.media-amazon.com/images/I/712lUnThXpL._AC_UL960_FMwebp_QL65_.jpg)
Car Phone Holder for Magsafe [78+LBS Strongest Suction & 2400gf Magnetic] 360° Adjustable Car Phone Mount, Phone Holders for Your Car for iPhone 17 Pro Max 16 15 14 13 12 Air Plus (Carbon Fiber) Global Recycled Standard






































