XHTML三种文件类型声明_HTML/Xhtml_网页制作
XHTML定义了三种文件类型声明。
最普遍使用的是XHTML Transitional。 是强制使用的。
一个XHTML文档有三个主要的部分： DOCTYPE Head Body
基本的文档结构是这样的：
..>
在XHTML文档中，文档类型声明总是位于首行。 一个XHTML的实例
这个一个简单的（最小化的）XHTML文档：
-//W3C//DTD XHTML 1.0 Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
a simple paragraph
文档类型声明定义文档的类型：
-//W3C//DTD XHTML 1.0 Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
文档的其余部分类似HTML：
a simple paragraph
3种文档类型声明 DTD规定了使用通用标记语言(SGML)的网页的语法。 诸如HTML这样的通用标记语言应用使用DTD来规定应用于某种特定文档中的标签的规则，这些规则包括一系列的元素和实体的声明。 在通用标记语言(SGML)的文档类型声明或DTD中，XHTML被详细地进行了描述。 XHTML DTD使用精确的可被计算机读取的语言来描述合法的XHTML标记的语法和句法。 存在三种XHTML文档类型： STRICT（严格类型） TRANSITIONAL（过渡类型） FRAMESET（框架类型） XHTML 1.0的三种XML文档类型XHTML 1.0规定了三种XML文档类型，以对应上述三种DTD。 XHTML 1.0 Strict
-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/
xhtml1-strict.dtd">
在这样的情况下使用：需要干净的标记，避免表现上的混乱。请与层叠样式表配合使用。 XHTML 1.0 Transitional
-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/
xhtml1-transitional.dtd">
在这样的情况下使用：当需要利用HTML在表现上的特性时，并且当需要为那些不支持层叠样式表的浏览器编写XHTML时。 XHTML 1.0 Frameset
-//W3C//DTD XHTML 1.0 Frameset//EN""http://www.w3.org/TR/xhtml1/DTD/
xhtml1-frameset.dtd">
在这样的情况下使用：需要使用HTML框架将浏览器窗口分割为两部分或更多框架时。
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
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
1391
52
What software is crystaldiskmark? -How to use crystaldiskmark?
Mar 18, 2024 pm 02:58 PM
CrystalDiskMark is a small HDD benchmark tool for hard drives that quickly measures sequential and random read/write speeds. Next, let the editor introduce CrystalDiskMark to you and how to use crystaldiskmark~ 1. Introduction to CrystalDiskMark CrystalDiskMark is a widely used disk performance testing tool used to evaluate the read and write speed and performance of mechanical hard drives and solid-state drives (SSD). Random I/O performance. It is a free Windows application and provides a user-friendly interface and various test modes to evaluate different aspects of hard drive performance and is widely used in hardware reviews
What to do if the 0x80004005 error code appears. The editor will teach you how to solve the 0x80004005 error code.
Mar 21, 2024 pm 09:17 PM
When deleting or decompressing a folder on your computer, sometimes a prompt dialog box "Error 0x80004005: Unspecified Error" will pop up. How should you solve this situation? There are actually many reasons why the error code 0x80004005 is prompted, but most of them are caused by viruses. We can re-register the dll to solve the problem. Below, the editor will explain to you the experience of handling the 0x80004005 error code. Some users are prompted with error code 0X80004005 when using their computers. The 0x80004005 error is mainly caused by the computer not correctly registering certain dynamic link library files, or by a firewall that does not allow HTTPS connections between the computer and the Internet. So how about
How to download foobar2000? -How to use foobar2000
Mar 18, 2024 am 10:58 AM
foobar2000 is a software that can listen to music resources at any time. It brings you all kinds of music with lossless sound quality. The enhanced version of the music player allows you to get a more comprehensive and comfortable music experience. Its design concept is to play the advanced audio on the computer The device is transplanted to mobile phones to provide a more convenient and efficient music playback experience. The interface design is simple, clear and easy to use. It adopts a minimalist design style without too many decorations and cumbersome operations to get started quickly. It also supports a variety of skins and Theme, personalize settings according to your own preferences, and create an exclusive music player that supports the playback of multiple audio formats. It also supports the audio gain function to adjust the volume according to your own hearing conditions to avoid hearing damage caused by excessive volume. Next, let me help you
How to use NetEase Mailbox Master
Mar 27, 2024 pm 05:32 PM
NetEase Mailbox, as an email address widely used by Chinese netizens, has always won the trust of users with its stable and efficient services. NetEase Mailbox Master is an email software specially created for mobile phone users. It greatly simplifies the process of sending and receiving emails and makes our email processing more convenient. So how to use NetEase Mailbox Master, and what specific functions it has. Below, the editor of this site will give you a detailed introduction, hoping to help you! First, you can search and download the NetEase Mailbox Master app in the mobile app store. Search for "NetEase Mailbox Master" in App Store or Baidu Mobile Assistant, and then follow the prompts to install it. After the download and installation is completed, we open the NetEase email account and log in. The login interface is as shown below
How to use Baidu Netdisk app
Mar 27, 2024 pm 06:46 PM
Cloud storage has become an indispensable part of our daily life and work nowadays. As one of the leading cloud storage services in China, Baidu Netdisk has won the favor of a large number of users with its powerful storage functions, efficient transmission speed and convenient operation experience. And whether you want to back up important files, share information, watch videos online, or listen to music, Baidu Cloud Disk can meet your needs. However, many users may not understand the specific use method of Baidu Netdisk app, so this tutorial will introduce in detail how to use Baidu Netdisk app. Users who are still confused can follow this article to learn more. ! How to use Baidu Cloud Network Disk: 1. Installation First, when downloading and installing Baidu Cloud software, please select the custom installation option.
BTCC tutorial: How to bind and use MetaMask wallet on BTCC exchange?
Apr 26, 2024 am 09:40 AM
MetaMask (also called Little Fox Wallet in Chinese) is a free and well-received encryption wallet software. Currently, BTCC supports binding to the MetaMask wallet. After binding, you can use the MetaMask wallet to quickly log in, store value, buy coins, etc., and you can also get 20 USDT trial bonus for the first time binding. In the BTCCMetaMask wallet tutorial, we will introduce in detail how to register and use MetaMask, and how to bind and use the Little Fox wallet in BTCC. What is MetaMask wallet? With over 30 million users, MetaMask Little Fox Wallet is one of the most popular cryptocurrency wallets today. It is free to use and can be installed on the network as an extension
How to use Xiaomi Auto app
Apr 01, 2024 pm 09:19 PM
Xiaomi car software provides remote car control functions, allowing users to remotely control the vehicle through mobile phones or computers, such as opening and closing the vehicle's doors and windows, starting the engine, controlling the vehicle's air conditioner and audio, etc. The following is the use and content of this software, let's learn about it together . Comprehensive list of Xiaomi Auto app functions and usage methods 1. The Xiaomi Auto app was launched on the Apple AppStore on March 25, and can now be downloaded from the app store on Android phones; Car purchase: Learn about the core highlights and technical parameters of Xiaomi Auto, and make an appointment for a test drive. Configure and order your Xiaomi car, and support online processing of car pickup to-do items. 3. Community: Understand Xiaomi Auto brand information, exchange car experience, and share wonderful car life; 4. Car control: The mobile phone is the remote control, remote control, real-time security, easy
What is chirp down? -How to use chirp down
Mar 18, 2024 am 11:46 AM
Chirp Down can also be called JJDown. This is a video download tool specially created for Bilibili. However, many friends do not understand this software. Today, let the editor explain to you what Chirp Down is? How to use chirp down. 1. The origin of Chirpdown Chirpdown originated in 2014. It is a very old video downloading software. The interface adopts Win10 tile style, which is simple, beautiful and easy to operate. Chirna is the poster girl of Chirpdown, and the artist is あさひクロイ. Jijidown has always been committed to providing users with the best download experience, constantly updating and optimizing the software, solving various problems and bugs, and adding new functions and features. The function of Chirp Down Chirp Down is
