What is the aside element for in HTML5?
The
The <aside></aside> element in HTML5 is used to represent content that is tangentially related to the main content of the page, but can be considered separate from it. It’s typically used for sidebars, pull quotes, advertisements, or additional information that supports the primary content but isn’t essential to it.
When to use the <aside></aside> element
- Sidebars: For content placed to the side of an article, such as related links, author info, or navigation.
- Pull quotes: Highlighting a quote from the article that stands out visually.
- Definitions or explanations: Extra context, like a brief bio or a glossary term.
- Advertisements: Promotional content adjacent to the main article.
- Related content: Suggestions for further reading or related blog posts.
Key points to remember
- The
<aside></aside>should be related indirectly to the surrounding content. If it's completely unrelated, it might not be appropriate. - It can be placed inside an article (to refer to content specific to that article) or outside (as a general sidebar for the page).
- It’s a semantic element, meaning it gives meaning to the structure of your page, which helps with accessibility and SEO.
Examples
<article>
<h2>My Blog Post</h2>
<p>This is the main content of the article.</p>
<aside>
<p><strong>Fun fact:</strong> This topic was first discussed in 1920.</p>
</aside>
</article>Or as a sidebar:
<aside>
<h3>Related Links</h3>
<ul>
<li><a href="#">Link 1</a></li>
<li><a href="#">Link 2</a></li>
</ul>
</aside>Basically, if the content makes sense on its own but isn’t part of the core narrative, <aside></aside> is likely the right choice.
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