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Class, ID, and Attributes in HTML

Class, ID, and Attributes in HTML

Learn how to use HTML classes, IDs, and attributes to make dynamic, customizable web pages.

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In this lesson, we will explore the class, id, and other attributes, which are essential for structuring HTML documents, adding metadata, and connecting HTMl with CSS and JavaScript.

Understanding the class attribute

The class attribute is used to assign one or more class names to an HTML element. Classes are helpful for applying CSS styles or for JavaScript to identify and manipulate elements on the page. A class name is reusable, meaning multiple elements can share the same class.

<tag class="classname">Content</tag>

Consider the following example where both (div and p) elements can be targeted using their class names in CSS or JavaScript.

<div class="container">This is a container</div>
<p class="text-primary">This is primary text</p>
Assigning class attribute to HTML elements

In the above code:

  • Line 1: The div element has a class named container.

  • Line 2: The p element has a class named text-primary. ...

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