Learn the code in Taobao webpage_html/css_WEB-ITnose
1. HTML tag
declaration must be the first line of the HTML document, located at before label.
The declaration is not an HTML tag; it is an instruction to the web browser as to which version of HTML the page should be written in.
In HTML 4.01, the declaration references a DTD because HTML 4.01 is based on SGML. A DTD specifies the rules for a markup language so that browsers can render content correctly.
HTML5 is not based on SGML, so there is no need to reference a DTD.
Tip: Always add the declaration to your HTML document so the browser knows the document type.
2. Problems with the tags charset=gb2312 and charset=utf-8 in the HTML language
charset = gb2312 is Simplified Chinese, UTF-8 is International coding, if you are in China, it is best to use gb2312, which will be faster. It is not easy to produce garbled characters
3. meta name="description" content="Here is the description of the web page, which is for search engines to see. The search engine will rank the inclusion and ranking based on this description. Generally, are keywords within the web page. The
element provides meta-information about the page, such as description and keywords for search engines and update frequency. The tag is located at the head of the document and contains no content. The properties of the tag define the name/value pairs associated with the document.
4
,This code is the verification code for Baidu Webmaster Platform to verify website ownership.
5
, tagdefines the relationship between the document and external resources. The most common use of the tag is to link style sheets. , the tag has no closing tag. In XHTML, the tag must be closed correctly. Example:
Links to an external style sheet. :
Explanation rel: Specifies the relationship between the current document and the linked document.
The href attribute of the tag is used to specify the URL of the hyperlink target. > The value of the href attribute can be a relative or absolute URL to any valid document, including fragment identifiers and JavaScript snippets. If the user selects content within the tag, the browser will attempt to retrieve and display the content specified by the href attribute. The document represented by the URL, or a list of JavaScript expressions, methods and functions.
*Possible values:
Absolute URL - pointing to another site (such as href ="http://www.example.com/index.htm")
Relative URL - points to a file within the site (href="index.htm")
<head><link rel="stylesheet" type="text/css" href="theme.css" /></head>
6.
charset=utf-8
Indicates that the character set of the current document uses utf-8 characters, which is what we It is often said that the English character set;charset
is Unicode Translation Format, which means converting Unicode into a certain format. gbk gb2312
Mainly used in Chinese. big5
for Traditional Chinese
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
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1371
52
What is the purpose of the <progress> element?
Mar 21, 2025 pm 12:34 PM
The article discusses the HTML <progress> element, its purpose, styling, and differences from the <meter> element. The main focus is on using <progress> for task completion and <meter> for stati
What is the purpose of the <datalist> element?
Mar 21, 2025 pm 12:33 PM
The article discusses the HTML <datalist> element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159
What is the purpose of the <meter> element?
Mar 21, 2025 pm 12:35 PM
The article discusses the HTML <meter> element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates <meter> from <progress> and ex
What is the viewport meta tag? Why is it important for responsive design?
Mar 20, 2025 pm 05:56 PM
The article discusses the viewport meta tag, essential for responsive web design on mobile devices. It explains how proper use ensures optimal content scaling and user interaction, while misuse can lead to design and accessibility issues.
What are the best practices for cross-browser compatibility in HTML5?
Mar 17, 2025 pm 12:20 PM
Article discusses best practices for ensuring HTML5 cross-browser compatibility, focusing on feature detection, progressive enhancement, and testing methods.
How do I use the HTML5 <time> element to represent dates and times semantically?
Mar 12, 2025 pm 04:05 PM
This article explains the HTML5 <time> element for semantic date/time representation. It emphasizes the importance of the datetime attribute for machine readability (ISO 8601 format) alongside human-readable text, boosting accessibilit
How do I use HTML5 form validation attributes to validate user input?
Mar 17, 2025 pm 12:27 PM
The article discusses using HTML5 form validation attributes like required, pattern, min, max, and length limits to validate user input directly in the browser.
What is the purpose of the <iframe> tag? What are the security considerations when using it?
Mar 20, 2025 pm 06:05 PM
The article discusses the <iframe> tag's purpose in embedding external content into webpages, its common uses, security risks, and alternatives like object tags and APIs.
