What three layers does the front-end page consist of?
The front-end page is composed of three layers: "structure layer", "presentation layer" and "behavior layer". The structure layer is the skeleton of the page, created by HTML, used to build the structure of the document; the presentation layer is the style of the page, created by CSS, used to set the presentation effect of the document; the behavior layer is the behavior of the page, created by JavaScript, used to Implement the document's behavior.

The operating environment of this tutorial: windows7 system, CSS3&&HTML5&&javascript version 1.8.5, Dell G3 computer.
The three layers of the front-end page are the structure layer, the presentation layer, and the behavior layer.
-
Structural layer is the skeleton of the page, created by HTML or XHTML markup language, and is used to build the structure of the document.
HTML is used to define the content of the web page, such as title, text, images, etc.;
-
The presentation layer is the style of the page, Created by CSS (Cascading Style Sheets) and used to set the presentation effect of the document.
CSS is used to control the appearance of the web page, such as color, font, background, etc.;
-
The behavior layer is the behavior of the page. Created by the JavaScript language and used to implement document behavior.
JavaScript is used to update the content in the web page in real time, such as obtaining data from the server and updating it to the web page, modifying the style of some tags or the content thereof, etc., which can make the web page more vivid.
However, there are some potential areas of overlap between these three technologies. For example, DOM technology can be used to change the structure of web pages. Examples of overlapping techniques can also be found in CSS. Predefined symbols (pseudo class attributes) like :hover and :focus allow us to change the rendering based on user-triggered events. Changing the presentation of elements is of course the "sphere of influence" of the presentation layer, but reacting to user-triggered events is the domain of the behavioral layer. This overlap of presentation and behavior layers creates a gray area.
For more programming-related knowledge, please visit: Programming Learning! !
The above is the detailed content of What three layers does the front-end page consist of?. For more information, please follow other related articles on the PHP Chinese website!
React Inside HTML: Integrating JavaScript for Dynamic Web PagesApr 16, 2025 am 12:06 AMTo integrate React into HTML, follow these steps: 1. Introduce React and ReactDOM in HTML files. 2. Define a React component. 3. Render the component into HTML elements using ReactDOM. Through these steps, static HTML pages can be transformed into dynamic, interactive experiences.
The Benefits of React: Performance, Reusability, and MoreApr 15, 2025 am 12:05 AMReact’s popularity includes its performance optimization, component reuse and a rich ecosystem. 1. Performance optimization achieves efficient updates through virtual DOM and diffing mechanisms. 2. Component Reuse Reduces duplicate code by reusable components. 3. Rich ecosystem and one-way data flow enhance the development experience.
React: Creating Dynamic and Interactive User InterfacesApr 14, 2025 am 12:08 AMReact is the tool of choice for building dynamic and interactive user interfaces. 1) Componentization and JSX make UI splitting and reusing simple. 2) State management is implemented through the useState hook to trigger UI updates. 3) The event processing mechanism responds to user interaction and improves user experience.
React vs. Backend Frameworks: A ComparisonApr 13, 2025 am 12:06 AMReact is a front-end framework for building user interfaces; a back-end framework is used to build server-side applications. React provides componentized and efficient UI updates, and the backend framework provides a complete backend service solution. When choosing a technology stack, project requirements, team skills, and scalability should be considered.
HTML and React: The Relationship Between Markup and ComponentsApr 12, 2025 am 12:03 AMThe relationship between HTML and React is the core of front-end development, and they jointly build the user interface of modern web applications. 1) HTML defines the content structure and semantics, and React builds a dynamic interface through componentization. 2) React components use JSX syntax to embed HTML to achieve intelligent rendering. 3) Component life cycle manages HTML rendering and updates dynamically according to state and attributes. 4) Use components to optimize HTML structure and improve maintainability. 5) Performance optimization includes avoiding unnecessary rendering, using key attributes, and keeping the component single responsibility.
React and the Frontend: Building Interactive ExperiencesApr 11, 2025 am 12:02 AMReact is the preferred tool for building interactive front-end experiences. 1) React simplifies UI development through componentization and virtual DOM. 2) Components are divided into function components and class components. Function components are simpler and class components provide more life cycle methods. 3) The working principle of React relies on virtual DOM and reconciliation algorithm to improve performance. 4) State management uses useState or this.state, and life cycle methods such as componentDidMount are used for specific logic. 5) Basic usage includes creating components and managing state, and advanced usage involves custom hooks and performance optimization. 6) Common errors include improper status updates and performance issues, debugging skills include using ReactDevTools and Excellent
React and the Frontend Stack: The Tools and TechnologiesApr 10, 2025 am 09:34 AMReact is a JavaScript library for building user interfaces, with its core components and state management. 1) Simplify UI development through componentization and state management. 2) The working principle includes reconciliation and rendering, and optimization can be implemented through React.memo and useMemo. 3) The basic usage is to create and render components, and the advanced usage includes using Hooks and ContextAPI. 4) Common errors such as improper status update, you can use ReactDevTools to debug. 5) Performance optimization includes using React.memo, virtualization lists and CodeSplitting, and keeping code readable and maintainable is best practice.
React's Role in HTML: Enhancing User ExperienceApr 09, 2025 am 12:11 AMReact combines JSX and HTML to improve user experience. 1) JSX embeds HTML to make development more intuitive. 2) The virtual DOM mechanism optimizes performance and reduces DOM operations. 3) Component-based management UI to improve maintainability. 4) State management and event processing enhance interactivity.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

WebStorm Mac version
Useful JavaScript development tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

SublimeText3 Chinese version
Chinese version, very easy to use

Atom editor mac version download
The most popular open source editor






