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@harish 892

What is a void element in HTML?


2021-11-17 21:21 · 4 min read

Not all HTML tags are of the same structure. While most elements require an opening tag, a closing tag, and contents, some elements - known as void elements - only require an opening tag as they themselves do not contain any elements. This topic explains and demonstrates the proper usage of void elements in HTML

Void elements

HTML 4.01/XHTML 1.0 Strict includes the following void elements:

  • area - clickable, defined area in an image
  • base - specifies a base URL from which all links base
  • br - line break
  • hr - horizontal rule (line)
  • img - image
  • input - field where users enter data
  • link - links an external resource to the document
  • meta - provides information about the document
  • param - defines parameters for plugins

HTML 5 standards include all non-deprecated tags from the previous list and

  • command - represents a command users can invoke [obsolete]
  • keygen - facilitates public key generation for web certificates [deprecated]
  • source - specifies media sources for picture, audio, and video elements
     

The example below does not include void elements:

<div>
<a href="http://blog.theprodevelopers.com/">
<h3>Click here to visit <i>Pro Developer</i></h3>
</a>
<button onclick="alert('Hello!');">Say Hello!</button>
<p>My favorite language is <b>HTML</b>. Here are my others:</p>
<ol>
<li>CSS</li>
<li>JavaScript</li>
<li>PHP</li>
</ol>
</div>

Notice how every element has an opening tag, a closing tag, and text or other elements inside the opening and closing tags. Void tags however, are shown in the example belows:

<img src="https://blog.theprodevelopers.com/img/logos/logo.png" />
<br>
<hr>
<input type="number" placeholder="Enter your favorite number">

With the exception of the img tag, all of these void elements have only an opening tag. The img tag, unlike any other tag, has a self closing / before the greater than sign of the opening tag. It is best practice to have a space before the slash.

 

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