What is the class attribute in HTML5
In HTML5, the class attribute can define the class name of the element. It is often used to point to the class of the style sheet (class selector). It can also be used in JavaScript to modify the class name of the HTML element and modify the style; syntax Format "<element class="classname">". <element class="classname">
The operating environment of this tutorial: Windows 7 system, HTML5 version, Dell G3 computer.
HTML5 class attribute
The class attribute defines the class name of the element. The
class attribute is typically used to point to the class of a style sheet (i.e. the CSS .class selector). However, it can also be used in JavaScript (via the HTML DOM) to modify the class name of an HTML element.
Syntax
<element class="classname">
classname: Specifies the name of the class of the element. To specify multiple classes for an element, separate the class names with spaces. . Multiple classes are allowed for HTML elements.
Name rules:
must start with the letters A-Z or a-z
can be the following characters: (A-Za- z), numbers (0-9), bars ("-"), and underscores ("_")
In HTML, class names are case-sensitive
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.center
{
text-align:center;
}
</style>
</head>
<body>
<h1 id="标题居中">标题居中</h1>
<p class="center">段落居中。</p>
</body>
</html>Rendering:
html video tutorial》】
The above is the detailed content of What is the class attribute in HTML5. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1386
52
Table Border in HTML
Sep 04, 2024 pm 04:49 PM
Guide to Table Border in HTML. Here we discuss multiple ways for defining table-border with examples of the Table Border in HTML.
HTML margin-left
Sep 04, 2024 pm 04:48 PM
Guide to HTML margin-left. Here we discuss a brief overview on HTML margin-left and its Examples along with its Code Implementation.
Nested Table in HTML
Sep 04, 2024 pm 04:49 PM
This is a guide to Nested Table in HTML. Here we discuss how to create a table within the table along with the respective examples.
HTML Table Layout
Sep 04, 2024 pm 04:54 PM
Guide to HTML Table Layout. Here we discuss the Values of HTML Table Layout along with the examples and outputs n detail.
HTML Input Placeholder
Sep 04, 2024 pm 04:54 PM
Guide to HTML Input Placeholder. Here we discuss the Examples of HTML Input Placeholder along with the codes and outputs.
HTML Ordered List
Sep 04, 2024 pm 04:43 PM
Guide to the HTML Ordered List. Here we also discuss introduction of HTML Ordered list and types along with their example respectively
Moving Text in HTML
Sep 04, 2024 pm 04:45 PM
Guide to Moving Text in HTML. Here we discuss an introduction, how marquee tag work with syntax and examples to implement.
HTML onclick Button
Sep 04, 2024 pm 04:49 PM
Guide to HTML onclick Button. Here we discuss their introduction, working, examples and onclick Event in various events respectively.
