


Web page HTML code explanation: ordered list and unordered list_HTML/Xhtml_web page production
This section studies the list elements in HTML. The list form plays a large role in website design. The displayed information is very neat and intuitive, making it easy for users to understand. In the following CSS style learning, the advanced functions of list elements will be used extensively.
Lists for organizing data
After learning so many HTML tags that control the display of web pages, readers can initially create pure article pages. This section studies the list elements in HTML. The list form plays a large role in website design. The displayed information is very neat and intuitive, making it easy for users to understand. In the following CSS style learning, the advanced functions of list elements will be used extensively.

4.4.1 Structural composition of the list The
HTML list element is a structure enclosed by a list tag, and the included list items are composed of
4.4.2 Making an unordered list
As the name suggests, an unordered list is a list in which the list items in the list structure are not in order. Most lists in web applications use unordered lists, and their list tags use
- List item one
- List item two
- List item three
- List item four
- List item five

As the name suggests, an ordered list is a list in which the list items in the list structure are in order. There can be various sequence numbers from top to bottom, such as 1, 2, 3 or a, b, c, etc. Create a web page file in the D:web directory, name it ul_ol.htm, and write the code as shown in Code 4.17.
Code 4.17 List settings: ul_ol.htm
Web front-end technology
- HTML
- CSS
- JavaScript
- FLASH
Learning about web backend
- ASP
- ASP.net
- PHP
- CGI
- Ruby
- Python
Enter http://localhost/ul_ol.htm in the browser address bar, and the browsing effect is as shown in Figure 4.18.

Figure 4.18 List settings

HTMLattributesarecrucialinwebdevelopmentforcontrollingbehavior,appearance,andfunctionality.Theyenhanceinteractivity,accessibility,andSEO.Forexample,thesrcattributeintagsimpactsSEO,whileonclickintagsaddsinteractivity.Touseattributeseffectively:1)Usese

The alt attribute is an important part of the tag in HTML and is used to provide alternative text for images. 1. When the image cannot be loaded, the text in the alt attribute will be displayed to improve the user experience. 2. Screen readers use the alt attribute to help visually impaired users understand the content of the picture. 3. Search engines index text in the alt attribute to improve the SEO ranking of web pages.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML is used to build web page structure; 2. CSS is used to beautify the appearance of web pages; 3. JavaScript is used to achieve dynamic interaction. Through tags, styles and scripts, these three together build the core functions of modern web pages.

Setting the lang attributes of a tag is a key step in optimizing web accessibility and SEO. 1) Set the lang attribute in the tag, such as. 2) In multilingual content, set lang attributes for different language parts, such as. 3) Use language codes that comply with ISO639-1 standards, such as "en", "fr", "zh", etc. Correctly setting the lang attribute can improve the accessibility of web pages and search engine rankings.

HTMLattributesareessentialforenhancingwebelements'functionalityandappearance.Theyaddinformationtodefinebehavior,appearance,andinteraction,makingwebsitesinteractive,responsive,andvisuallyappealing.Attributeslikesrc,href,class,type,anddisabledtransform

TocreatealistinHTML,useforunorderedlistsandfororderedlists:1)Forunorderedlists,wrapitemsinanduseforeachitem,renderingasabulletedlist.2)Fororderedlists,useandfornumberedlists,customizablewiththetypeattributefordifferentnumberingstyles.

HTML is used to build websites with clear structure. 1) Use tags such as, and define the website structure. 2) Examples show the structure of blogs and e-commerce websites. 3) Avoid common mistakes such as incorrect label nesting. 4) Optimize performance by reducing HTTP requests and using semantic tags.

ToinsertanimageintoanHTMLpage,usethetagwithsrcandaltattributes.1)UsealttextforaccessibilityandSEO.2)Implementsrcsetforresponsiveimages.3)Applylazyloadingwithloading="lazy"tooptimizeperformance.4)OptimizeimagesusingtoolslikeImageOptimtoreduc


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