Learn All JavaScript Basics in Under 45 Minutes (HTML + CSS + Vanilla JS)
🎓 I'll get you hired as a software engineer / tech professional 👉 1-on-1 Developer Mentorship With Me (6 weeks) https://www.codingelf.academy/
I built a cute Coffee Order Builder using only HTML, CSS, and Vanilla JavaScript — no frameworks, no AI tools. Just pure JS to teach you the fundamentals you actually need to land a dev job and build real projects. ☕
In this tutorial you'll learn:
→ How to structure a project with HTML5 & CSS3
→ DOM manipulation with Vanilla JavaScript
→ Working with objects to manage app state
→ Event listeners for radios & checkboxes
→ Array methods (forEach, map, push, splice, indexOf, join)
→ Dynamic rendering with template literals & innerHTML
→ Updating CSS variables from JS for live visual changes
→ Writing clean, readable code you can explain in interviews
Tech stack: HTML5, CSS3, Vanilla JavaScript (no frameworks!)
This is a beginner-friendly, full build from scratch — perfect for aspiring developers, career switchers, and anyone who wants to actually understand JavaScript instead of copy-pasting from AI.
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📁 Source code & CSS files: 🍋 Finished App → https://github.com/platypusonmars/you...
⸻ ⏱️ TIMESTAMPS
[0:00] Introduction to JavaScript Fundamentals
[2:00] Building an Interactive Coffee Shop App
[3:07] Project Structure and File Setup
[4:08] HTML & CSS
[14:07] Creating the Coffee Cup and Order Summary
[19:31] Creating badges
[21:04] Creating summary
[21:45] Enabling Javascript
[22:28] Important information
[25:29] Implementing JavaScript Functionality
[27:33] getElementById()
[33:04] Changing colors and size
[36:04] indexOf() Method
[36:33] splice() method
[36:49] debugging Javascript
[39:36] Updating the Order Summary
[41:39] forEach() loop
[41:57] map()
[42:06] template literals
[42:27] join()
[43:00] innerHTML
[43:50] toUpperCase() and slice()
[44:11] conditional rendering with the ternary operator
[44:20] cap()
[45:18] take-home interview assignment
[46:27] Bonus
[47:42] Outro
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