# Application Development

- [Application Development Overview](application-dev-guide.md)
- About OpenHarmony
  - [OpenHarmony Project](../OpenHarmony-Overview.md)
  - [Glossary](../glossary.md)
  - [Release Notes](../release-notes/Readme.md)
- Quick Start
  - Getting Started
    - [Before You Start](quick-start/start-overview.md)
    - [Getting Started with ArkTS in Stage Model](quick-start/start-with-ets-stage.md)
  - Development Fundamentals
    - Application Package Fundamentals
      - [Application Package Overview](quick-start/application-package-overview.md)
      - Application Package Structure
        - [Application Package Structure in Stage Model](quick-start/application-package-structure-stage.md)
        - [Application Package Structure in FA Model](quick-start/application-package-structure-fa.md)
      - Multi-HAP Mechanism
        - [Multi-HAP Design Objectives](quick-start/multi-hap-objective.md)
        - [Multi-HAP Build View](quick-start/multi-hap-build-view.md)
        - [Multi-HAP Development, Debugging, Release, and Deployment Process](quick-start/multi-hap-release-deployment.md)
        - [Multi-HAP Usage Rules](quick-start/multi-hap-rules.md)
        - [Multi-HAP Operation Mechanism and Data Communication Modes](quick-start/multi-hap-principles.md)
      - [Application Installation and Uninstallation Process](quick-start/application-package-install-uninstall.md)
      - Shared Package
        - [Shared Package Overview](quick-start/shared-guide.md)
        - [HAR](quick-start/har-package.md)
        - HSP
          - [In-Application HSP Development](quick-start/in-app-hsp.md)
    - Application Configuration Files in Stage Model
      - [Application Configuration File Overview (Stage Model)](quick-start/application-configuration-file-overview-stage.md)
      - [app.json5 Configuration File](quick-start/app-configuration-file.md)
      - [module.json5 Configuration File](quick-start/module-configuration-file.md)
    - Application Configuration Files in FA Model
      - [Application Configuration File Overview (FA Model)](quick-start/application-configuration-file-overview-fa.md)
      - [Internal Structure of the app Tag](quick-start/app-structure.md)
      - [Internal Structure of the deviceConfig Tag](quick-start/deviceconfig-structure.md)
      - [Internal Structure of the module Tag](quick-start/module-structure.md)
  - [Resource Categories and Access](quick-start/resource-categories-and-access.md)
  - Learning ArkTS
    - [Getting Started with ArkTS](quick-start/arkts-get-started.md)
    - Basic Syntax
      - [Basic Syntax Overview](quick-start/arkts-basic-syntax-overview.md)
      - [Declarative UI Description](quick-start/arkts-declarative-ui-description.md)
      - Custom Component
        - [Creating a Custom Component](quick-start/arkts-create-custom-components.md)
        - [Page and Custom Component Lifecycle](quick-start/arkts-page-custom-components-lifecycle.md)
      - [\@Builder Decorator: Custom Builder Function](quick-start/arkts-builder.md)
      - [\@BuilderParam Decorator: \@Builder Function Reference](quick-start/arkts-builderparam.md)
      - [\@Styles Decorator: Definition of Resusable Styles](quick-start/arkts-style.md)
      - [\@Extend Decorator: Extension of Built-in Components](quick-start/arkts-extend.md)
      - [\@AnimatableExtend Decorator: Definition of Animatable Attributes](quick-start/arkts-animatable-extend.md)
      - [stateStyles: Polymorphic Style](quick-start/arkts-statestyles.md)
    - State Management
      - [State Management Overview](quick-start/arkts-state-management-overview.md)
      - Component State Management
        - [\@State Decorator: State Owned by Component](quick-start/arkts-state.md)
        - [\@Prop Decorator: One-Way Synchronization from Parent to Child Components](quick-start/arkts-prop.md)
        - [\@Link Decorator: Two-Way Synchronization Between Parent and Child Components](quick-start/arkts-link.md)
        - [\@Provide and \@Consume Decorators: Two-Way Synchronization with Descendant Components](quick-start/arkts-provide-and-consume.md)
        - [\@Observed and \@ObjectLink Decorators: Observing Attribute Changes in Nested Class Objects](quick-start/arkts-observed-and-objectlink.md)
      - Application State Management
        - [Application State Management Overview](quick-start/arkts-application-state-management-overview.md)
        - [LocalStorage: UI State Storage](quick-start/arkts-localstorage.md)
        - [AppStorage: Application-wide UI State Storage](quick-start/arkts-appstorage.md)
        - [PersistentStorage: Application State Persistence](quick-start/arkts-persiststorage.md)
        - [Environment: Device Environment Query](quick-start/arkts-environment.md)
      - Other State Management Features
        - [Overview of Other State Management Features](quick-start/arkts-other-state-mgmt-functions-overview.md)
        - [\@Watch Decorator: Getting Notified of State Variable Changes](quick-start/arkts-watch.md)
        - [$$ Syntax: Two-Way Synchronization of Built-in Components](quick-start/arkts-two-way-sync.md)
    - Rendering Control
      - [Overview of Rendering Control](quick-start/arkts-rendering-control-overview.md)
      - [if/else: Conditional Rendering](quick-start/arkts-rendering-control-ifelse.md)
      - [ForEach: Rendering of Repeated Content](quick-start/arkts-rendering-control-foreach.md)
      - [LazyForEach: Lazy Data Loading](quick-start/arkts-rendering-control-lazyforeach.md)
- Development
  - [Application Models](application-models/Readme-EN.md)
  - [UI Development](ui/Readme-EN.md)
  - [ArkTS Common Library](arkts-utils/Readme-EN.md)
  - [Web](web/Readme-EN.md)
  - [Notification](notification/Readme-EN.md)
  - [Window Manager](windowmanager/Readme-EN.md)
  - [WebGL](webgl/Readme-EN.md)
  - [Media](media/Readme-EN.md)
  - [Security](security/Readme-EN.md)
  - [Connectivity](connectivity/Readme-EN.md)
  - [Data Management](database/Readme-EN.md)
  - [File Management](file-management/Readme-EN.md)
  - [Telephony Service](telephony/Readme-EN.md)
  - [Task Management](task-management/Readme-EN.md)
  - [Device Management](device/Readme-EN.md)
  - [Device Usage Statistics](device-usage-statistics/Readme-EN.md)
  - [DFX](dfx/Readme-EN.md)
  - [Internationalization](internationalization/Readme-EN.md)
  - [Application Test](application-test/Readme-EN.md)
  - [IDL Specifications and User Guide](IDL/idl-guidelines.md)
  - [Native APIs](napi/Readme-EN.md)
  - [Performance](performance/Readme-EN.md)
- Tools
  - [DevEco Studio (OpenHarmony) User Guide](quick-start/deveco-studio-user-guide-for-openharmony.md)
  - [Debugging Tools](tools/Readme-EN.md)
- Hands-On Tutorials
  - [Samples](https://gitee.com/openharmony/applications_app_samples/blob/OpenHarmony-4.0-Release/README_zh.md)
  - [Codelabs](https://gitee.com/openharmony/codelabs/tree/master)
- API References
  - [SystemCapability](reference/syscap.md)
  - [SystemCapability List](reference/syscap-list.md)
  - [Component Reference (TypeScript-based Declarative Development Paradigm)](reference/arkui-ts/Readme-EN.md)
  - [Component Reference (JavaScript-based Web-like Development Paradigm)](reference/arkui-js/Readme-EN.md)
  - [JavaScript Service Widget UI Component Reference](reference/js-service-widget-ui/Readme-EN.md)
  - API Reference
    - [ArkTS and JavaScript APIs](reference/apis/Readme-EN.md)
    - [Error Codes](reference/errorcodes/Readme-EN.md)
    - Native API Reference
      - [Native APIs](reference/native-apis/Readme-EN.md)
      - [Standard Libraries](reference/native-lib/third_party_libc/musl.md)
      - [Node_API](reference/native-lib/third_party_napi/napi.md)
- [FAQs](faqs/Readme-EN.md)
- Contribution
  - [How to Contribute](../contribute/documentation-contribution.md)