HTML称为超文本标记语言，是一种标记语言。它包括一系列标签．通过这些标签可以将网络上的文档格式统一，使分散的Internet资源连接为一个逻辑整体。HTML文本是由HTML命令组成的描述性文本，HTML命令可以说明文字，图形、动画、声音、表格、链接等。
一个完整的HTML文档必须包含3个部分：文档声明、文档头部和文档主体。而正是它们构成了HTML的骨架结构。前面已经分别介绍过文档声明和文档头部，本文将详细介绍构成HTML骨架结构的基础元素
HTML
元素代表HTML文档的根(root)，其他所有元素都是该元素的后代。与标签限定了文档的开始点和结束点，在它们之间是文档的头部和主体。文档的头部由
标签定义，而主体由标签定义
【xmlns】
xmlns属性用于指派文档的XML命名空间。预设值是"http://www.w3.org/1999/xhtml"，这在XHTML中是必要的，而在HTML中则是可选的
<html xmlns="http://www.w3.org/1999/xhtml">
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HEAD
标签用于定义文档的头部，它是所有头部元素的容器。;大部分不可见，描述了文档的一些基本的属性和信息(可以呈现的是title和icon)。元素下的子元素主要包括
、
、<base>、<link>、<style>和<script>这六个元素</p><p><title>定义文档的标题，它是head部分中唯一必需的元素</p><p>如果在文档中忽略了<head>标签，则大部分浏览器会自动创建一个<head>元素</p><p>关于文档头部的更多信息移步至此</p><p>BODY</p><p><body>表示的是HTML文档的主体内容，任何一个HTML文档，只允许存在一个<body>元素</p><p>【默认样式】</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>chrome/firefox/safari/IE8+
margin:8px;
IE7-
margin:15px 10px;</pre><div class="contentsignin">登录后复制</div></div><p>结构</p><p>在sublime编辑器中，输入!，再按住Tab键，就可以生成一个基本的HTML结构，结构如下</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body></body>
</html></pre><div class="contentsignin">登录后复制</div></div><p>在实际中，文档的头部结构常常需要承载一些常用的功能，所以HTML结构较复杂，结构如下</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Document</title>
<meta name="keywords" content=""/>
<meta name="description" content=""/>
<meta name="viewport" content="width=device-width"/>
<link rel="stylesheet" href="5/style.css"/>
<link rel="shortcut icon" href="ico.ico"/>
</head>
<body></body>
</html></pre><div class="contentsignin">登录后复制</div></div><p>相关推荐：<a href="https://www.php.cn/div-tutorial.html" target="_blank">html教程</a><br></p><p>以上是html基本结构分析的详细内容。更多信息请关注PHP中文网其他相关文章！</p>
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