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HTML5包含哪兩種標籤

Jul 29, 2022 pm 05:03 PM
html5

HTML5的兩個標籤:1、雙標籤,是指由開始和結束兩個標籤符號組成的標籤,語法「<標籤名稱>內容」;常見雙標籤有html、head、body、body、body、div、p。 2.單一標籤,是指用標籤符號即可完整的描述某個功能的標籤,語法「<標籤名稱 />」;常見單一標籤有br、hr、img、input、link、meta。

HTML5包含哪兩種標籤

本教學操作環境:windows7系統、HTML5版、Dell G3電腦。

超文本標記語言(外國語簡稱:HTML)標記標籤通常稱為HTML標籤,HTML標籤是HTML語言中最基本的單位,HTML標籤是HTML(標準通用標記語言下的應用)最重要的組成部分。

HTML標籤是由尖括號包圍的關鍵字,例如 <html>

根據標籤的組成特點,通常將HTML標籤分為兩大類,分別是“雙標籤”、“單標籤”,它們的具體介紹如下。

1、雙標籤

雙標籤也被稱為“體標籤”,是指由開始和結束兩個標籤符號組成的標籤(開始和結束標籤也被稱為開放標籤和閉合標籤)。雙標籤的基本語法格式如下。 、

<标签名>内容</标签名>
登入後複製

例如,前面文件結構中的<html>和、和等都屬於雙標籤。

html5常見雙標記

#標籤類別常見標籤
#雙標籤<html>(定義HTML文檔)、(定義文檔頭部)、(定義文檔標題)、<body>、<table> ;、<tr>、<td>、<span>、<p>、<form>、<h1>、<h2>、<h3>、<h4>、<h2>、<h3>、<h4>、<h5> ;、<h6>、<object>、<style>、<b>、<u>、<strong>、<i>、<div>、<a>、<script>、<div>、<a>、<script> ;、<center></td></tr></tbody></table>#<p><strong style="font-size: 18px;">2、单标签</strong><br/></p><p>单标签也被称为“空标签”,是指用一个标签符号即可完整的描述某个功能的标签</p><ul style="list-style-type: disc;"><li><p>因为它们是没有内容的 HTML 标签元素,它们是在开始标签中就关闭的元素,不存在成对的情况。</p></li></ul><p>其基本语法格式如下。</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><标签名 /></pre><div class="contentsignin">登入後複製</div></div><p>例如,在HTML中还有一种特殊的标签——注释标签,该标签就是一种特殊功能的单标签。如果需要在HTML文档中添加一些便于阅读和理解,但又不需要显示在页面中的注释文字,就需要使用注释标签。注释标签的基本写法。</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><!-- 注释语句 --></pre><div class="contentsignin">登入後複製</div></div><p>需要注意的是,注释内容不会显示在浏览器窗口中,但是作为HTML文档内容的一部分,注释标签可以被下载到用户的计算机上,或者用户查看源代码时也可以看到注释标签。</p> <p>注:在HTML中,在空标签上使用闭标签是无效的,例如:</br>。这样的情况是无效的HTML。</p> <p><strong>html单标签有</strong></p> <ul style="list-style-type: disc;"> <li> <p><br>:可插入一个简单的换行符。</p> <p><br> 标签是空标签(意味着它没有结束标签,因此这是错误的:<br></br>)。在 XHTML 中,把结束标签放在开始标签中,也就是 <br />。<br></p> </li> <li><p><hr>:定义 HTML 页面中的主题变化(比如话题的转移),并显示为一条水平线。</p></li> <li><p><area>:定义图像映射内部的区域(图像映射指的是带有可点击区域的图像)。</p></li> <li><p><base>:为页面上的所有链接规定默认地址或默认目标。</p></li> <li><p><img>:定义 HTML 页面中的图像。</p></li> <li><p><input>:规定了用户可以在其中输入数据的输入字段。</p></li> <li><p><link>:定义文档与外部资源的关系,最常见的用途是链接样式表。</p></li> <li> <p><meta>:提供了 HTML 文档的元数据。元数据不会显示在客户端,但是会被浏览器解析。</p> <p>META元素通常用于指定网页的描述,关键词,文件的最后修改时间,作者及其他元数据。</p> <p>元数据可以被使用浏览器(如何显示内容或重新加载页面),搜索引擎(关键词),或其他 Web 服务调用。</p> </li> <li><p><basefont>:定义文档中所有文本的默认颜色、大小和字体。</p></li> <li><p><param>:允许您为插入 XHTML 文档的对象规定 run-time 设置,也就是说,此标签可为包含它的 <object> 或者 <applet> 标签提供参数。</p></li> <li><p><col>:规定了 <colgroup> 元素内部的每一列的列属性。通过使用 <col> 标签,可以向整个列应用样式,而不需要重复为每个单元格或每一行设置样式。</p></li> <li><p><frame>:定义 frameset 中的一个特定的窗口(框架)。frameset 中的每个框架都可以设置不同的属性,比如 border、scrolling、noresize 等等。</p></li> <li><p><embed>:定义了一个容器,用来嵌入外部应用或者互动程序(插件)。</p></li> <li><p><keygen>规定用于表单的密钥对生成器字段。</p></li> <li><p><source>:为媒介元素(比如 <video> 和 <audio>)定义媒介资源。</p></li> </ul> <p>【推荐课程:<a href="http://www.php.cn/course/880.html" target="_blank" textvalue="HTML5视频教程">HTML5视频教程</a>、<a href="https://www.php.cn/course/list/1.html" target="_blank" textvalue="web前端">web前端</a>】</p><p>以上是HTML5包含哪兩種標籤的詳細內容。更多資訊請關注PHP中文網其他相關文章!</p> </div> </div> <div class="wzconShengming_sp"> <div class="bzsmdiv_sp">本網站聲明</div> <div>本文內容由網友自願投稿,版權歸原作者所有。本站不承擔相應的法律責任。如發現涉嫌抄襲或侵權的內容,請聯絡admin@php.cn</div> </div> </div> <ins class="adsbygoogle" style="display:block" data-ad-format="autorelaxed" data-ad-client="ca-pub-5902227090019525" data-ad-slot="2507867629"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); 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