# mohamedkhalaf-001/task_12_quiz_app architecture

> Architecture diagram of the GitHub repository mohamedkhalaf-001/task_12_quiz_app, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-08-13). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/mohamedkhalaf-001/task_12_quiz_app
- Repository: https://github.com/mohamedkhalaf-001/task_12_quiz_app

## Overview

#### Purpose and entry point
This is a static browser-based quiz application. `index.html` is the application entry point, loading stylesheet assets from `CSS/style.css` and client-side JavaScript from `js/`.

#### Browser composition
The HTML document provides the quiz page structure and UI mounting elements. Presentation is centralized in `CSS/style.css`, while all application behavior executes in the browser without a server-side runtime or build pipeline.

Paths:
- `index.html`
- `CSS/style.css`

#### Application bootstrap and orchestration
`js/index.js` is the likely startup module. It connects the document/UI with quiz-domain modules, initializes application state, and begins or resets quiz interaction flows.

Paths:
- `js/index.js`
- `index.html`

#### Quiz domain and state flow
`js/quiz.js` defines the quiz-level lifecycle: selecting or advancing questions, tracking progress and answers, and determining completion/results. It is the principal boundary between the application controller and individual question behavior.

Paths:
- `js/quiz.js`
- `js/question.js`
- `js/constants.js`

#### Question model and content rules
`js/question.js` encapsulates individual question representation and answer evaluation. Shared quiz data, fixed labels, limits, or other domain constants are separated into `js/constants.js`, allowing the quiz controller to consume consistent question definitions.

Paths:
- `js/question.js`
- `js/constants.js`

#### UI interaction boundary
`js/ui-controls.js` owns browser-facing control behavior such as buttons, selections, display updates, or event wiring. This keeps DOM manipulation distinct from quiz state and question logic, with `js/index.js` coordinating between the two layers.

Paths:
- `js/ui-controls.js`
- `js/index.js`
- `index.html`

#### Audio feedback
`js/sounds.js` provides sound-related behavior, likely invoked during answer, navigation, or completion events. It forms an optional feedback subsystem called by UI or quiz orchestration rather than a separate runtime service.

Paths:
- `js/sounds.js`
- `js/quiz.js`
- `js/ui-controls.js`

#### Runtime and external boundaries
The application runs entirely in a web browser using native HTML, CSS, JavaScript, DOM events, and likely browser audio APIs. The repository shows no backend, database, deployment infrastructure, package manager, or external service integration. Static image assets are contained under `images/`.

Paths:
- `images`
- `index.html`
- `js/sounds.js`

Main entry points: [`js/quiz.js`](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/quiz.js) (Quiz Lifecycle), [`js/ui-controls.js`](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/ui-controls.js) (UI Controls), [`index.html`](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/index.html) (Quiz Page), [`js/index.js`](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/index.js) (App Bootstrap)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_browser["Browser App"]
  node_page["Quiz Page<br/>HTML entry point<br/>[index.html]"]
  node_styles["Stylesheet<br/>CSS<br/>[style.css]"]
  node_bootstrap["App Bootstrap<br/>JavaScript module<br/>[index.js]"]
  node_ui["UI Controls<br/>DOM interaction<br/>[ui-controls.js]"]
  node_sounds["Audio Feedback<br/>browser audio<br/>[sounds.js]"]
  node_images["Image Assets<br/>static assets"]
end

subgraph group_domain["Quiz Domain"]
  node_quiz["Quiz Lifecycle<br/>quiz controller<br/>[quiz.js]"]
  node_question["Question Model<br/>domain model<br/>[question.js]"]
  node_constants["Quiz Constants<br/>domain data<br/>[constants.js]"]
end

node_page -->|"loads"| node_styles
node_page -->|"starts"| node_bootstrap
node_page -->|"uses"| node_images
node_bootstrap -->|"coordinates"| node_ui
node_bootstrap -->|"initializes"| node_quiz
node_ui -->|"updates DOM"| node_page
node_ui -->|"sends actions"| node_quiz
node_quiz -->|"manages"| node_question
node_quiz -->|"uses definitions"| node_constants
node_ui -.->|"triggers feedback"| node_sounds
node_quiz -.->|"triggers feedback"| node_sounds

click node_page "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/index.html"
click node_styles "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/CSS/style.css"
click node_bootstrap "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/index.js"
click node_ui "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/ui-controls.js"
click node_quiz "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/quiz.js"
click node_question "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/question.js"
click node_constants "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/constants.js"
click node_sounds "https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/sounds.js"
click node_images "https://github.com/mohamedkhalaf-001/task_12_quiz_app/tree/main/images"

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_page,node_styles,node_bootstrap,node_ui,node_sounds,node_images toneBlue
class node_quiz,node_question,node_constants toneAmber
```

## Components

### Browser App

Static client-side quiz runtime.

- [Quiz Page](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/index.html): HTML entry point · Provides the UI structure and script/style mounts. · `index.html`
- [Stylesheet](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/CSS/style.css): CSS · `CSS/style.css`
- [App Bootstrap](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/index.js): JavaScript module · Initializes and coordinates quiz interaction. · `js/index.js`
- [UI Controls](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/ui-controls.js): DOM interaction · Wires controls and updates browser-facing displays. · `js/ui-controls.js`
- [Audio Feedback](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/sounds.js): browser audio · Plays interaction and completion feedback. · `js/sounds.js`
- [Image Assets](https://github.com/mohamedkhalaf-001/task_12_quiz_app/tree/main/images): static assets · `images`

### Quiz Domain

Quiz state and question rules.

- [Quiz Lifecycle](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/quiz.js): quiz controller · Advances questions, tracks progress, and produces results. · `js/quiz.js`
- [Question Model](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/question.js): domain model · Represents questions and evaluates answers. · `js/question.js`
- [Quiz Constants](https://github.com/mohamedkhalaf-001/task_12_quiz_app/blob/main/js/constants.js): domain data · Shared question definitions and fixed quiz values. · `js/constants.js`

## Connections

- Quiz Page → Stylesheet: loads
- Quiz Page → App Bootstrap: starts
- Quiz Page → Image Assets: uses
- App Bootstrap → UI Controls: coordinates
- App Bootstrap → Quiz Lifecycle: initializes
- UI Controls → Quiz Page: updates DOM
- UI Controls → Quiz Lifecycle: sends actions
- Quiz Lifecycle → Question Model: manages
- Quiz Lifecycle → Quiz Constants: uses definitions
- UI Controls → Audio Feedback: triggers feedback
- Quiz Lifecycle → Audio Feedback: triggers feedback