The role of hover in html
The role of hover in HTML and specific code examples
In web development, hover refers to when the user hovers the cursor over an element When, trigger some actions or effects. It is implemented through the CSS :hover pseudo-class. In this article, we will introduce the role of hover and specific code examples.
First, hover allows an element to change its style when the user hovers it. For example, when hovering the mouse over a button, the button's background color or text color can be changed to remind the user of the currently selected button. The following is a simple code example:
<!DOCTYPE html>
<html>
<head>
<style>
.btn {
background-color: blue;
color: white;
padding: 10px;
border: none;
cursor: pointer;
}
.btn:hover {
background-color: red;
}
</style>
</head>
<body>
<button class="btn">按钮</button>
</body>
</html>In the above code, the initial background color of the button is blue. When the mouse hovers over the button, the background color of the button changes to red.
Secondly, hover can also be used to create interactive effects. For example, when the mouse is hovering over an image, a magnification effect can be displayed, or on a navigation menu, when the mouse is hovering over an option, a secondary menu can be displayed. The following is a code example that uses hover to create a picture magnification effect:
<!DOCTYPE html>
<html>
<head>
<style>
.image {
width: 200px;
height: 200px;
overflow: hidden;
}
.image img {
width: 100%;
height: 100%;
transition: transform 0.3s ease-in-out;
}
.image:hover img {
transform: scale(1.2);
}
</style>
</head>
<body>
<div class="image">
<img src="/static/imghw/default1.png" data-src="image.jpg" class="lazy" alt="图片">
</div>
</body>
</html>In the above code, when the mouse hovers over the picture, the scale property of the picture is set to 1.2, that is, the picture is magnified 1.2 times, thus achieving The effect of enlarging the picture.
Finally, hover can also be used to control the display and hiding of elements. For example, in a list, when the mouse hovers over a list item, the detailed content of the list item is displayed. The following is a code example that uses hover to control the display and hiding of elements:
<!DOCTYPE html>
<html>
<head>
<style>
.list-item {
display: none;
}
.list:hover .list-item {
display: block;
}
</style>
</head>
<body>
<ul class="list">
<li>列表项1</li>
<li>列表项2</li>
<li>列表项3</li>
<li class="list-item">列表项1的详细内容</li>
<li class="list-item">列表项2的详细内容</li>
<li class="list-item">列表项3的详细内容</li>
</ul>
</body>
</html>In the above code, when the mouse hovers over the list item, the detailed content of the list item is displayed through the :hover pseudo-class selector. display.
To sum up, hover plays an important role in web development. It can change the style of elements, create interactive effects, and control the display and hiding of elements. By properly using hover, you can add more interactivity and appeal to your web pages.
The above is the detailed content of The role of hover in html. 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
How to use bootstrap in vue
Apr 07, 2025 pm 11:33 PM
Using Bootstrap in Vue.js is divided into five steps: Install Bootstrap. Import Bootstrap in main.js. Use the Bootstrap component directly in the template. Optional: Custom style. Optional: Use plug-ins.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.
How to write split lines on bootstrap
Apr 07, 2025 pm 03:12 PM
There are two ways to create a Bootstrap split line: using the tag, which creates a horizontal split line. Use the CSS border property to create custom style split lines.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
How to insert pictures on bootstrap
Apr 07, 2025 pm 03:30 PM
There are several ways to insert images in Bootstrap: insert images directly, using the HTML img tag. With the Bootstrap image component, you can provide responsive images and more styles. Set the image size, use the img-fluid class to make the image adaptable. Set the border, using the img-bordered class. Set the rounded corners and use the img-rounded class. Set the shadow, use the shadow class. Resize and position the image, using CSS style. Using the background image, use the background-image CSS property.
How to set up the framework for bootstrap
Apr 07, 2025 pm 03:27 PM
To set up the Bootstrap framework, you need to follow these steps: 1. Reference the Bootstrap file via CDN; 2. Download and host the file on your own server; 3. Include the Bootstrap file in HTML; 4. Compile Sass/Less as needed; 5. Import a custom file (optional). Once setup is complete, you can use Bootstrap's grid systems, components, and styles to create responsive websites and applications.
How to use bootstrap button
Apr 07, 2025 pm 03:09 PM
How to use the Bootstrap button? Introduce Bootstrap CSS to create button elements and add Bootstrap button class to add button text
How to resize bootstrap
Apr 07, 2025 pm 03:18 PM
To adjust the size of elements in Bootstrap, you can use the dimension class, which includes: adjusting width: .col-, .w-, .mw-adjust height: .h-, .min-h-, .max-h-
