# contactnaziafarzana-code/etch-a-sketch architecture

> Architecture diagram of the GitHub repository contactnaziafarzana-code/etch-a-sketch, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-06-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/contactnaziafarzana-code/etch-a-sketch
- Repository: https://github.com/contactnaziafarzana-code/etch-a-sketch

## Overview

This repository is a very small, browser-only application with no build pipeline, backend, or external services.

1. **Runtime boundary**
   - The whole app runs in the browser.
   - There is no server-side component, database, package manager metadata, or compiled artifact in the tree.

2. **Primary entry point**
   - `index.html` is the application shell and the file the browser loads first.
   - It is the top-level integration point for the UI, script, and styling.

3. **Behavior layer**
   - `index.js` is the main logic container.
   - In a project named “etch-a-sketch,” this is likely where user interaction, drawing behavior, and state management live.

4. **Presentation layer**
   - `style.css` contains the entire visual layer.
   - It likely defines the canvas/grid appearance, layout, and any UI controls or visual feedback.

5. **Document structure**
   - `index.html` likely provides the DOM elements that `index.js` manipulates.
   - The architecture is DOM-driven rather than component-based or framework-based.

6. **Data flow**
   - User input enters through browser events.
   - `index.js` handles those events, updates application state, and mutates the DOM or drawing surface.
   - `style.css` controls how the resulting interface is rendered.

7. **State and rendering**
   - Any “drawing” state is probably maintained in JavaScript memory, not in a separate persistence layer.
   - Rendering is likely immediate and local, with updates reflected directly in the page.

8. **Dependency structure**
   - The dependency chain is simple: HTML loads JS and CSS; JS may query and update DOM nodes defined in HTML.
   - There are no visible internal modules or subsystems beyond this.

9. **Engineering boundary**
   - This is a single-page, single-module style app.
   - All concerns are co-located rather than split into reusable packages, services, or feature folders.

10. **What to draw in an architecture diagram**
   - A browser box containing three files:
     - `index.html` as the shell
     - `index.js` as interaction/state logic
     - `style.css` as presentation
   - Arrows should show browser events flowing into JavaScript and JavaScript updating the DOM, with CSS applying styles to the rendered output.

Main entry points: [`index.html`](https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/index.html) (index.html), [`index.js`](https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/index.js) (index.js), [`style.css`](https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/style.css) (style.css)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_browser["Browser App"]
  node_browser_runtime(("Browser<br/>runtime"))
  node_index_html["index.html<br/>shell<br/>[index.html]"]
  node_index_js["index.js<br/>behavior<br/>[index.js]"]
  node_style_css["style.css<br/>presentation<br/>[style.css]"]
end

node_browser_runtime -->|"loads"| node_index_html
node_browser_runtime -->|"events"| node_index_js
node_index_html -->|"script"| node_index_js
node_index_html -->|"styles"| node_style_css
node_index_js -->|"DOM updates"| node_index_html
node_style_css -->|"renders"| node_index_html

click node_index_html "https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/index.html"
click node_index_js "https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/index.js"
click node_style_css "https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/style.css"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_browser_runtime,node_index_html,node_index_js,node_style_css toneBlue
```

## Components

### Browser App

Single browser-only page where HTML, JavaScript, and CSS are loaded together.

- **Browser**: runtime · Executes the app and delivers user input events.
- [index.html](https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/index.html): shell · Primary document shell and entry point for the page. · `index.html`
- [index.js](https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/index.js): behavior · Main interaction and state logic for the app. · `index.js`
- [style.css](https://github.com/contactnaziafarzana-code/etch-a-sketch/blob/main/style.css): presentation · Global visual styling for the page and drawing surface. · `style.css`

## Connections

- Browser → index.html: loads · The browser loads the HTML document first.
- Browser → index.js: events · User input events are handled by the JavaScript layer.
- index.html → index.js: script · The document includes the main behavior script.
- index.html → style.css: styles · The document includes the stylesheet.
- index.js → index.html: DOM updates · JavaScript reads and mutates DOM elements defined in the page.
- style.css → index.html: renders · CSS determines how the interface is displayed.