<blockquote>最基础的方法是使用<pre><code>标签组合，保留代码格式并正确显示HTML实体，如，避免浏览器解析为标签。</blockquote> <p><img src="https://img.php.cn/upload/article/001/503/042/175795080252225.png" alt="html文档代码怎么展示_html代码展示标签使用"></p> <p>展示HTML文档代码，其实方法挺多的，但核心就在于怎么让<a style="color:#f60; text-decoration:underline;" title="浏览器" href="https://www.php.cn/zt/16180.html" target="_blank">浏览器</a>知道，这段文字不是要渲染成网页，而是要原样显示出来。最简单直接的就是用<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><pre></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>和<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><code></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>标签，但具体用哪个，或者怎么组合，还得看情况。</p> <p><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><pre></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 标签保留空格和换行，<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><code></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 标签表示一段<a style="color:#f60; text-decoration:underline;" title="计算机" href="https://www.php.cn/zt/16013.html" target="_blank">计算机</a>代码。</p> <h3>解决方案（直接输出解决方案即可）</h3> <ol> <li> <p><strong>最基础的方法：<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><pre></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><code></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 标签</strong></p> <p>这是最常用的方式，也是最直接的。</p> <p><span>立即学习</span>“<a href="https://pan.quark.cn/s/cb6835dc7db1" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">前端免费学习笔记（深入）</a>”；</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class=’brush:html;toolbar:false;’><pre><code> <!DOCTYPE html> <html> <head> <title>示例</title> </head> <body> <h1>Hello, World!</h1> </body> </html> </code></pre></pre><div class="contentsignin"></div></div><p>注意 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><</pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>，这是HTML实体，分别代表 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><</pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div>，因为直接写 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><</pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 会被浏览器解析成HTML标签。</p> </li> <li> <p><strong>使用HTML实体手动转义</strong></p> <p>如果你不想用 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><pre></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><code></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>，或者需要在其他地方显示代码片段，那就手动转义HTML标签。</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class=’brush:html;toolbar:false;’><p>这是一个段落。</p></pre><div class="contentsignin"></div></div><p>这种方法比较繁琐，容易出错，但是比较灵活。</p> </li> <li> <p><strong>使用JavaScript动态生成</strong></p> <p>有时候，你可能需要从JavaScript里动态生成HTML代码，然后显示出来。</p> <div class="aritcle_card"> <a class="aritcle_card_img" href="/ai/decohack"><img src="https://img.php.cn/upload/ai_manual/000/000/000/175679995565218.png" alt="DecoHack"></a> <div class="aritcle_card_info"> <a href="/ai/decohack">DecoHack</a> <p>DecoHack是一个专注分享产品设计、开发、运营与推广的博客周刊</p> <div class=""> <img src="/static/images/card_xiazai.png" alt="DecoHack"><span>17</span> </div> </div> <a href="/ai/decohack" class="aritcle_card_btn"> <span>查看详情</span> <img src="/static/images/cardxiayige-3.png" alt="DecoHack"></a> </div><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class=’brush:html;toolbar:false;’><div id="codeContainer"></div> <script> const code = ` <!DOCTYPE html> <html> <head> <title>示例</title> </head> <body> <h1>Hello, World!</h1> </body> </html> `; document.getElementById(‘codeContainer’).innerText = code; </script></pre><div class="contentsignin"></div></div><p>这里用 <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">innerText</pre><div class="contentsignin"></div></div> 属性，浏览器会自动转义HTML标签。 如果用 <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">innerHTML</pre><div class="contentsignin"></div></div>，那就会被解析成HTML。</p> </li> <li> <p><strong>使用第三方库：Prism.<a style="color:#f60; text-decoration:underline;" title="js" href="https://www.php.cn/zt/15802.html" target="_blank">js</a> 或 highlight.js</strong></p> <p>这些库可以自动识别代码的语言，并进行语法高亮，让代码看起来更漂亮。</p> <p>使用方法一般是引入CSS和JS文件，然后在 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><pre></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><code></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 标签上添加特定的class。</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class=’brush:html;toolbar:false;’><link rel="stylesheet" href="prism.css"> <script src="prism.js"></script> <pre><code class="html"> <!DOCTYPE html> <html> <head> <title>示例</title> </head> <body> <h1>Hello, World!</h1> </body> </html> </code></pre></pre><div class="contentsignin"></div></div><p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">class="html"</pre><div class="contentsignin"></div></div> 告诉Prism.js，这段代码是HTML代码。</p> </li> </ol> <h3>如何选择合适的HTML代码展示方法？</h3> <p>选择方法取决于你的需求。如果只是简单展示一段代码，用 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><pre></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><code></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 就够了。如果需要语法高亮，或者需要动态生成代码，那就考虑用第三方库或者JavaScript。手动转义HTML实体一般不推荐，太麻烦了。</p> <h3> <a style="color:#f60; text-decoration:underline;" title="为什么" href="https://www.php.cn/zt/92702.html" target="_blank">为什么</a>不直接用<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><textarea></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div>标签展示代码？</h3> <p><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><textarea></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 标签也能显示文本，但它主要用于用户输入，而不是代码展示。虽然可以设置 <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">readonly</pre><div class="contentsignin"></div></div> 属性，但样式不太好控制，而且没有语法高亮功能。用 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><pre></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><code></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div> 更专业。</p> <h3>HTML实体除了<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><</pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>和<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>还有哪些常用的？</h3> <p>除了 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"><</pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>（小于号 <）和 <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">></pre><div class="contentsignin"></div></div><div class="contentsignin"></div></div><div class="contentsignin"></div></div>（大于号 >），常用的HTML实体还有：</p> <ul> <li><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">&</pre><div class="contentsignin"></div></div> (和号 &)</li> <li><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">"</pre><div class="contentsignin"></div></div> (双引号 ")</li> <li><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">'</pre><div class="contentsignin"></div></div> (单引号 ‘)</li> <li><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;"> </pre><div class="contentsignin"></div></div> (不断行空格)</li> </ul> <p>这些实体在HTML中都有特殊含义，需要转义才能正确显示。</p>
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