Web Front-end
HTML Tutorial
Things to note about html standards that comply with w3c standards_html/css_WEB-ITnose
Things to note about html standards that comply with w3c standards_html/css_WEB-ITnose
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>html标准源代码-html标准主要注意重点</title> <meta name="keywords" content="关键字" /> </head> <body> 第一行<br /> 第二行 <p>第二段</p> <p>第三段</p> </body> </html>
△Standard html source code that conforms to w3c
Things to note about html standards that conform to w3c standards
1. First, DOCTYPE declaration
2. End with and
3. Pay attention to a pair of combined tags such as
Common pair of combined tags include div, p, title, head, html, table, tr, td, span, style, b, strong, ul , ol, li, dl combination (dl, dt, dd), body
4. Individual tags such as line break tags br and other tags should be represented by
tags
Individual tags include br, meta, link
5. Tag names should be in half-width English lowercase as much as possible, such as
According to HTML standards, web standards, and w3c standards all need to follow the above points to comply with the standards.
How do you know when you need a pair of tags and when you need a separate tag? You need to pay more attention to this when developing div css, and you can use Dreamweaver software to make a simple judgment.
The method of using Dreamweaver to judge tags is as follows
You can do it by handwriting the code in "Code" in Dreamweaver software. Generally, when Dreamweaver software ends a tag with ">", if If it is a single type tag, Dreamweaver software will automatically convert it to "/>" such as "
". If it corresponds to a pair of type tags, it will not convert the ">" tag and the ">" tag will be displayed. It will not change to "/>". At this time, you need to end the tag with "". For example, "
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
Difficulty in updating caching of official account web pages: How to avoid the old cache affecting the user experience after version update?
Mar 04, 2025 pm 12:32 PM
The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,
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 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 to efficiently add stroke effects to PNG images on web pages?
Mar 04, 2025 pm 02:39 PM
This article demonstrates efficient PNG border addition to webpages using CSS. It argues that CSS offers superior performance compared to JavaScript or libraries, detailing how to adjust border width, style, and color for subtle or prominent effect
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
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
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
