LEARNING OBJECTIVES ⌵
- Understand how search engine crawlers (Googlebot, Bingbot) weight headings
<h1>through<h6>. - Implement the strict Single-
<h1>Architectural Rule per page. - Organize content into a logical tree outline without skipping heading levels.
- Avoid keyword stuffing and heading misuse for visual styling.
🎬 INTERACTIVE VISUAL PIPELINE
Core Architecture Simulation
1. Input
Directives & Tags
2. Parse
Tokenizer & AST
3. Layout
Box Model & Flow
4. Render
GPU Paint & Composite
PHASE 1: INPUT & DIRECTIVES
Browser receives declarative markup stream, parsing tag tokens and initializing component state.
📖 The Mental Model & Story
Think of your HTML document as an academic textbook. The book title is the <h1>. Each main unit is an <h2>. The sections inside that unit are <h3>, and subsections are <h4>.
If a book had five different titles on the front cover, or jumped straight from Chapter 1 to Subsection 1.4.2 without section headers, the reader—and search engine indexers—would be utterly confused about what topic the page specializes in.
<h1> Comprehensive Guide to TypeScript Generics
├── <h2> 1. What Are Generics?
│ ├── <h3> Type Parameters
│ └── <h3> Generic Constraints with extends
├── <h2> 2. Advanced Generic Patterns
│ ├── <h3> Conditional Types
│ └── <h3> Mapped Types with Keyof
└── <h2> 3. Common Anti-Patterns & Best Practices
📌 Key Takeaways
- Every page should have exactly one descriptive
<h1>matching the page's core intent. - Maintain monotonic heading depth (
<h1>$\rightarrow$<h2>$\rightarrow$<h3>); never skip from<h2>to<h4>. - Never use heading tags purely for visual font size; use CSS classes instead.
- --
❓ Knowledge Check
1. Which of the following is correct?
2. Which of the following is correct?