How mohamedkhalaf-001/task_12_quiz_app works
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: quiz.js Quiz Lifecycle · ui-controls.js UI Controls · index.html Quiz Page · index.js App Bootstrap
Components 9
Browser App
Static client-side quiz runtime.
- Quiz Page · Provides the UI structure and script/style mounts.
index.html - Stylesheet
CSS/style.css - App Bootstrap · Initializes and coordinates quiz interaction.
js/index.js - UI Controls · Wires controls and updates browser-facing displays.
js/ui-controls.js - Audio Feedback · Plays interaction and completion feedback.
js/sounds.js - Image Assets
images
Quiz Domain
Quiz state and question rules.
- Quiz Lifecycle · Advances questions, tracks progress, and produces results.
js/quiz.js - Question Model · Represents questions and evaluates answers.
js/question.js - Quiz Constants · Shared question definitions and fixed quiz values.
js/constants.js
Connections 11
- 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