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What is the role of pre tag

Feb 16, 2019 am 11:58 AM

pre标签的作用是什么?

pre 元素可定义预格式化的文本。被包围在 pre 元素中的文本通常会保留空格和换行符。而文本也会呈现为等宽字体,最常见应用就是用来表示计算机的源代码。

作用:定义预格式化的文本。

说明:被包围在 pre 元素中的文本通常会保留空格和换行符。而文本也会呈现为等宽字体。

 标签的一个常见应用就是用来表示计算机的源代码。可以导致段落断开的标签(例如标题、<p> 和 <address> 标签)绝不能包含在 <pre class="brush:php;toolbar:false"> 所定义的块里。尽管有些浏览器会把段落结束标签解释为简单地换行,但是这种行为在所有浏览器上并不都是一样的。pre 元素中允许的文本可以包括物理样式和基于内容的样式变化,还有链接、图像和水平分隔线。</p>
<p>注释:如果您希望使用 <pre class="brush:php;toolbar:false"> 标签来定义计算机源代码,比如 HTML 源代码,请使用符号实体来表示特殊字符,比如 "&lt;" 代表 "<","&gt;" 代表 ">","&amp;" 代表 "&"。</p>
<p>html pre标签 示例</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><html>
  <meta charset="utf-8">
<body>
  <pre class="brush:php;toolbar:false">
    离离原上草,一岁一枯荣。
    野火烧不尽,春风吹又生。
  

可以看到上面我们没有做任何的CSS渲染,文字依然按照我们排列好的形式格式化输出

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