Lists
HTML supports unnumbered, numbered, and definition lists. You can also nest lists, but don’t nest them too much, otherwise it will be unclear to readers.
Unnumbered Lists
Make an unnumbered, bulletin-style list,
Start with the opening tag
- (short for unnumbered list)
- (list item) tag, followed by Independent items; no need to use the tag
Enter the
Use the
Here is a list with three items:
- apples
- grapefruit
The output format is:
apples
bananas
grapefruit
to indicate.
Numbered Lists Numbered Lists
Numbered lists (also called ordered lists) are the same as unnumbered lists, except that
- is used instead of
- . Each item is also marked with
- . The following HTML code :
- oranges
- peaches
- grapes
The output produced is:
oranges
peaches
grapes
Definition List s
Definition lists (encoded as- ) usually contain alternating definition terms (encoded as
- ) and definition definitions (encoded as
- ). Web browsers usually start a new line Show definition description.
The following is an example of a definition list:- NCSA
- NCSA, the National Center for Supercomputing Applications,
is located on the campus of the University of Illinois
at Urbana-Champaign.
- Cornell Theory Center
- CTC is located on the campus of Cornell University in Ithaca,
New York.
The output format is:
NCSA
NCSA, the National Center for Supercomputing Applications, is located on the campus of the University of Illinois at Urbana-Champaign.
Cornell Theory Center
CTC is located on the campus of Cornell University in Ithaca, New York.
- NCSA
- items can contain multiple paragraphs (indicated by
tags), lists, or other definition information. The
COMPACT attribute may be used frequently if your definition terms are short. For example , if you want to display some computer options, they can be on the same line as the start of the definition. - -i
- invokes NCSA Mosaic for Microsoft Windows using the
initialization file defined in the path
- -k
- invokes NCSA Mosaic for Microsoft Windows in kiosk mode
The output format is:
-i
invokes NCSA Mosaic for Microsoft Windows using the initialization file defined in the path.
-k
invokes NCSA Mosaic for Microsoft Windows in kiosk mode.
Nested Lists
Lists can be nested. In each list item, you can also have multiple paragraphs, each Paragraphs contain nested lists.The above is the content of HTML Beginner’s Guide (3). For more related content, please pay attention to the PHP Chinese website (www.php.cn)!
- oranges

To build a website with powerful functions and good user experience, HTML alone is not enough. The following technology is also required: JavaScript gives web page dynamic and interactiveness, and real-time changes are achieved by operating DOM. CSS is responsible for the style and layout of the web page to improve aesthetics and user experience. Modern frameworks and libraries such as React, Vue.js and Angular improve development efficiency and code organization structure.

Boolean attributes are special attributes in HTML that are activated without a value. 1. The Boolean attribute controls the behavior of the element by whether it exists or not, such as disabled disable the input box. 2.Their working principle is to change element behavior according to the existence of attributes when the browser parses. 3. The basic usage is to directly add attributes, and the advanced usage can be dynamically controlled through JavaScript. 4. Common mistakes are mistakenly thinking that values need to be set, and the correct writing method should be concise. 5. The best practice is to keep the code concise and use Boolean properties reasonably to optimize web page performance and user experience.

HTML code can be cleaner with online validators, integrated tools and automated processes. 1) Use W3CMarkupValidationService to verify HTML code online. 2) Install and configure HTMLHint extension in VisualStudioCode for real-time verification. 3) Use HTMLTidy to automatically verify and clean HTML files in the construction process.

HTML, CSS and JavaScript are the core technologies for building modern web pages: 1. HTML defines the web page structure, 2. CSS is responsible for the appearance of the web page, 3. JavaScript provides web page dynamics and interactivity, and they work together to create a website with a good user experience.

The function of HTML is to define the structure and content of a web page, and its purpose is to provide a standardized way to display information. 1) HTML organizes various parts of the web page through tags and attributes, such as titles and paragraphs. 2) It supports the separation of content and performance and improves maintenance efficiency. 3) HTML is extensible, allowing custom tags to enhance SEO.

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.


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