class
The class attribute in HTML assigns one or more class names to an element, allowing for CSS styling and JavaScript manipulation of groups of elements.
class attribute
The class global attributes assigns one or more class names to an element, allowing for styling and interaction.
Syntax
index.html
<tag class="classname"></tag>
Example
Header 1
A paragraph.
Note that this is an important paragraph.
index.html
<h1 class="intro">Header 1</h1>
<p>A paragraph.</p>
<p class="important">Note that this is an important paragraph.</p>
The
class attribute can be applied to any HTML element.Using the class Attribute
Overview
The class attribute allows elements to be targeted for styling with CSS or accessed using JavaScript methods like document.getElementsByClassName().
Best Practices
- Semantic Naming: Use class names that reflect the element's purpose rather than its appearance. For example, prefer
attributesoveritalicsto maintain clarity even when styles change.
See also
- All global attributes
- element.className
- element.classList
- Introduction to CSS
Conclusion
The class attribute is essential in HTML, enabling efficient styling and scripting by grouping elements under shared class names. It supports flexible CSS customization and JavaScript interaction, making it a crucial tool in modern web development. Following best practices, such as using meaningful class names, enhances the maintainability and scalability of code.