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HTML <html> tag


The term “HTML in HTML” generally refers to the use of HTML code or elements within HTML documents to demonstrate or display HTML syntax, often for educational or documentation purposes. This can be done in several ways:

Displaying HTML Code in HTML

To display HTML code on a webpage without it being interpreted as actual HTML, you need to escape the HTML characters or use appropriate tags to show the code as plain text. Here are a few methods to achieve this:

  1. Using HTML Entities:

    • HTML entities are special codes used to represent characters that are reserved in HTML syntax. For example, < is represented as &lt;, and > is represented as &gt;.
    <p>To create a heading, use the &lt;h1&gt; tag.</p>

    In this example, &lt; and &gt; are used to display < and >, respectively.

  2. Using the <pre> and <code> Tags:

    • The <pre> tag is used to display preformatted text, preserving whitespace and line breaks. The <code> tag is used to denote a block of code within the text. Combining them helps display code snippets clearly.
    <pre>
<code>
&lt;h1&gt;This is a heading&lt;/h1&gt;
&lt;p&gt;This is a paragraph.&lt;/p&gt;
</code>
</pre>

    In this example, the <pre> tag maintains formatting, and the <code> tag specifies that the text is code. HTML entities are used to display the angle brackets.

  3. Using <textarea>:

    • The <textarea> element can be used to display code within a text area, which is especially useful for larger code snippets.
    <textarea rows="4" cols="50">
&lt;h1&gt;This is a heading&lt;/h1&gt;
&lt;p&gt;This is a paragraph.&lt;/p&gt;
</textarea>

    Here, the <textarea> tag is used to show the HTML code, with HTML entities to ensure that the code is not rendered.

Example Usage:

Here’s a complete example showing different methods to display HTML code:

<!DOCTYPE html>
<html>
<head>
  <title>HTML in HTML Example</title>
  <style>
    code {
      background-color: #f4f4f4;
      padding: 2px 4px;
      border-radius: 4px;
    }
    pre {
      background-color: #f4f4f4;
      padding: 10px;
      border-radius: 4px;
      overflow: auto;
    }
    textarea {
      width: 100%;
      height: 100px;
      font-family: monospace;
    }
  </style>
</head>
<body>
  <h1>Displaying HTML Code in HTML</h1>

  <h2>Using HTML Entities</h2>
  <p>To create a heading, use the &lt;h1&gt; tag.</p>

  <h2>Using &lt;pre&gt; and &lt;code&gt; Tags</h2>
  <pre>
<code>
&lt;h1&gt;This is a heading&lt;/h1&gt;
&lt;p&gt;This is a paragraph.&lt;/p&gt;
</code>
  </pre>

  <h2>Using &lt;textarea&gt; Element</h2>
  <textarea>
&lt;h1&gt;This is a heading&lt;/h1&gt;
&lt;p&gt;This is a paragraph.&lt;/p&gt;
  </textarea>
</body>
</html>


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