Learn the attribute selector in jQuery: examples and usage analysis
In front-end development, jQuery is a widely used JavaScript library that can simplify page operations, Code writing for event handling, animation effects, etc. Among them, the attribute selector is an important method in jQuery, which can filter and operate based on the attribute value of the element. This article will introduce the examples and usage of attribute selectors in jQuery, and provide specific code examples.
1. Basic syntax
The attribute selector uses the syntax [attribute=value] in jQuery, where attribute is the attribute name of the element , value is the attribute value to be matched. In addition, different matching methods can be achieved through different operators, including "equal to", "not equal to", "contains", etc.
2. Example and usage analysis
2.1 Simple attribute selector
<!DOCTYPE html>
<html>
<head>
<title>属性选择器实例</title>
<!-- 引入jQuery库 -->
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<p class="example" id="demo" title="example">这是一个示例段落</p>
<script>
$(document).ready(function(){
// 通过属性选择器选取title属性为example的元素
$('[title="example"]').css('color', 'red');
});
</script>
</body>
</html>In the above example, through the attribute selector[title="example" ]Select the element whose title attribute is example, and then change its text color to red.
2.2 Not equal to selector
<!DOCTYPE html>
<html>
<head>
<title>属性选择器实例</title>
<!-- 引入jQuery库 -->
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<p class="example" id="demo" title="example">这是一个示例段落</p>
<p class="example" id="demo2" title="another">这是另一个示例段落</p>
<script>
$(document).ready(function(){
// 通过属性选择器选取title属性不等于example的元素
$('[title!="example"]').css('color', 'blue');
});
</script>
</body>
</html>In the above case, select the element whose title attribute is not equal to example, and set its text color to blue.
2.3 Containing selector
<!DOCTYPE html>
<html>
<head>
<title>属性选择器实例</title>
<!-- 引入jQuery库 -->
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<p class="example" id="demo" title="example">这是一个示例段落</p>
<p class="example" id="demo2" title="another example">这是另一个示例段落</p>
<script>
$(document).ready(function(){
// 通过属性选择器选取title属性值包含example的元素
$('[title*="example"]').css('font-weight', 'bold');
});
</script>
</body>
</html>In this case, the element containing example in the title attribute value is selected by including the selector [title*="example"] And set its text to bold.
Conclusion
Through the examples and usage analysis in this article, we understand the basic syntax and common usage of attribute selectors in jQuery. Attribute selectors can help us select elements on the page more accurately and achieve more flexible interaction effects. I hope that readers can become more proficient in using the attribute selector in jQuery and improve the efficiency of front-end development by studying this article.
The above is the detailed content of Learn attribute selectors in jQuery: examples and usage analysis. For more information, please follow other related articles on the PHP Chinese website!
jquery实现多少秒后隐藏图片Apr 20, 2022 pm 05:33 PM实现方法：1、用“$("img").delay(毫秒数).fadeOut()”语句，delay()设置延迟秒数；2、用“setTimeout(function(){ $("img").hide(); },毫秒值);”语句，通过定时器来延迟。
jquery怎么修改min-height样式Apr 20, 2022 pm 12:19 PM修改方法：1、用css()设置新样式，语法“$(元素).css("min-height","新值")”；2、用attr()，通过设置style属性来添加新样式，语法“$(元素).attr("style","min-height:新值")”。
axios与jquery的区别是什么Apr 20, 2022 pm 06:18 PM区别：1、axios是一个异步请求框架，用于封装底层的XMLHttpRequest，而jquery是一个JavaScript库，只是顺便封装了dom操作；2、axios是基于承诺对象的，可以用承诺对象中的方法，而jquery不基于承诺对象。
jquery怎么在body中增加元素Apr 22, 2022 am 11:13 AM增加元素的方法：1、用append()，语法“$("body").append(新元素)”，可向body内部的末尾处增加元素；2、用prepend()，语法“$("body").prepend(新元素)”，可向body内部的开始处增加元素。
jquery中apply()方法怎么用Apr 24, 2022 pm 05:35 PM在jquery中，apply()方法用于改变this指向，使用另一个对象替换当前对象，是应用某一对象的一个方法，语法为“apply(thisobj,[argarray])”；参数argarray表示的是以数组的形式进行传递。
jquery怎么删除div内所有子元素Apr 21, 2022 pm 07:08 PM删除方法：1、用empty()，语法“$("div").empty();”，可删除所有子节点和内容；2、用children()和remove()，语法“$("div").children().remove();”，只删除子元素，不删除内容。
jquery怎么去掉只读属性Apr 20, 2022 pm 07:55 PM去掉方法：1、用“$(selector).removeAttr("readonly")”语句删除readonly属性；2、用“$(selector).attr("readonly",false)”将readonly属性的值设置为false。
jquery on()有几个参数Apr 21, 2022 am 11:29 AMon()方法有4个参数：1、第一个参数不可省略，规定要从被选元素添加的一个或多个事件或命名空间；2、第二个参数可省略，规定元素的事件处理程序；3、第三个参数可省略，规定传递到函数的额外数据；4、第四个参数可省略，规定当事件发生时运行的函数。
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
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
Atom editor mac version download
The most popular open source editor
Dreamweaver Mac version
Visual web development tools
PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
