你可以试试:

你好!下面是一些代码: < xmp > < div id = "你好" > < / div > < / xmp >

一种简单的方法来显示代码将包括它在一个文本区域和添加禁用属性，所以它是不可编辑的。

<textarea disabled> code </textarea>

希望这能帮助那些寻找简单方法完成工作的人。

但是警告，这不会为你转义标签，正如你在这里看到的(下面显然是行不通的):

textarea残疾> < 这是创建textarea的代码: textarea > < textarea > < / textarea > < /

在HTML中有几种方法可以转义所有内容，但都不是很好。

或者你可以放入一个iframe来加载一个普通的旧文本文件。

我认为:

你想要编写100%有效的HTML5 你想把代码片段(几乎)文字放在HTML中 特别是<应该不需要转义

你所有的选项都在这棵树里:

with HTML syntax there are five kinds of elements those called "normal elements" (like <p>) can't have a literal < it would be considered the start of the next tag or comment void elements they have no content you could put your HTML in a data attribute (but this is true for all elements) that would need JavaScript to move the data elsewhere in double-quoted attributes, " and &thing; need escaping: &quot; and &amp;thing; respectively raw text elements <script> and <style> only they are never rendered visible but embedding your text in Javascript might be feasable Javascript allows for multi-line strings with backticks it could then be inserted dynamically a literal </script is not allowed anywhere in <script> escapable raw text elements <textarea> and <title> only <textarea> is a good candidate to wrap code in it is totally legal to write </html> in there not legal is the substring </textarea for obvious reasons escape this special case with &lt;/textarea or similar &thing; needs escaping: &amp;thing; foreign elements elements from MathML and SVG namespaces at least SVG allows embedding of HTML again... and CDATA is allowed there, so it seems to have potential with XML syntax covered by Konrad's answer

注意:>从来不需要转义。甚至在正常元素中也没有。

如果您正在寻找与框架一起工作的解决方案。

const code = `
 <div>
  this will work in react
 <div>
`
<pre>
  <code>{code}</code>
</pre>

你可以用css给它一个漂亮的外观:

pre code {
    background-color: #eee;
    border: 1px solid #999;
    display: block;
    padding: 20px;
}

function escapeHTML(string)
    { 
        var pre = document.createElement('pre');
        var text = document.createTextNode(string);
        pre.appendChild(text);
        return pre.innerHTML;
}//end escapeHTML

它将返回转义的Html