The content of this article is to introduce cases about jQuery operation styles and changing styles. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you
jQuery operation style
class operation
(1)判断是否有样式类
hasClass(name)//name:用于判断的样式类名，返回值为true false
判断div是否有demo的样式类
$(“div”).hasClass(“demo”)
(2)添加样式类
addClass(name)//name指需要添加的样式类名，注意参数不要带点.
//给div添加demo的样式。
$(“div”).addClass(“demo”);
(3)移除样式类
removeClass("name")//name:需要移除的样式类名
//移除div中demo的样式
$(“div”).removeClass(“demo”);css operation (the operation is style Attributes)
(1)获取样式
css(name)//name:需要获取的样式名称
//获取div的背景颜色属性
$("div").css("background-color");
注意：获取样式操作只会返回第一个元素对应的样式值。
(2)设置单个样式
css(name,value)//name：需要设置的样式名称,value：对应的样式值
//给一个div标签的背景修改成红色
$("div").css("background","red");
（3）设置多个样式
css(obj)//参数是一个对象，对象中包含了需要设置的样式名和样式值
//例如
$("#one").css({
"background":"gray",
"width":"400px",
"height":"200px"
});Case sharing: interlaced color change
Change the background color through css operations and class operations in jQuery
<!DOCTYPE html>
<html>
<head><meta charset="UTF-8"></head>
<body>
<style>
*{
padding: 0;
margin:0;
}
ul{list-style: none;
}
li{
width:300px;
height:30px;
background-color:rgb(14,150,249);
}
.even{
background-color:rgb(241,70,215);
}
</style>
<ul>
<li>第一个</li>
<li>第二个</li>
<li>第三个</li>
<li>第四个</li>
<li>第五个</li>
<li>第六个</li>
</ul>
<script src="jquery/jquery-1.12.4.js"></script>
<script>
$(function(){
//给奇数的li修改背景颜色
$("li:odd").css("backgroundColor","pink");
//给偶数的li添加even类
$("li:even").addClass('even');
});
</script>
</body>
</html>Rendering:
##Summary: The above is this article The content, I hope it will be helpful for everyone to learn jQuery content.
The above is the detailed content of How to use css and class methods in jquery for style operations. For more information, please follow other related articles on the PHP Chinese website!
Is JavaScript Written in C? Examining the EvidenceApr 25, 2025 am 12:15 AMYes, the engine core of JavaScript is written in C. 1) The C language provides efficient performance and underlying control, which is suitable for the development of JavaScript engine. 2) Taking the V8 engine as an example, its core is written in C, combining the efficiency and object-oriented characteristics of C. 3) The working principle of the JavaScript engine includes parsing, compiling and execution, and the C language plays a key role in these processes.
JavaScript's Role: Making the Web Interactive and DynamicApr 24, 2025 am 12:12 AMJavaScript is at the heart of modern websites because it enhances the interactivity and dynamicity of web pages. 1) It allows to change content without refreshing the page, 2) manipulate web pages through DOMAPI, 3) support complex interactive effects such as animation and drag-and-drop, 4) optimize performance and best practices to improve user experience.
C and JavaScript: The Connection ExplainedApr 23, 2025 am 12:07 AMC and JavaScript achieve interoperability through WebAssembly. 1) C code is compiled into WebAssembly module and introduced into JavaScript environment to enhance computing power. 2) In game development, C handles physics engines and graphics rendering, and JavaScript is responsible for game logic and user interface.
From Websites to Apps: The Diverse Applications of JavaScriptApr 22, 2025 am 12:02 AMJavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.
Python vs. JavaScript: Use Cases and Applications ComparedApr 21, 2025 am 12:01 AMPython is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.
The Role of C/C in JavaScript Interpreters and CompilersApr 20, 2025 am 12:01 AMC and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.
JavaScript in Action: Real-World Examples and ProjectsApr 19, 2025 am 12:13 AMJavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.
JavaScript and the Web: Core Functionality and Use CasesApr 18, 2025 am 12:19 AMThe main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.
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
SublimeText3 English version
Recommended: Win version, supports code prompts!
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
Atom editor mac version download
The most popular open source editor
