Deletion method: 1. Use the remove() method, the syntax "$(selector).remove()"; 2. Use the detach() method, the syntax "$(selector).detach()"; 3 , use empty() method, syntax "$(selector).empty()".
The operating environment of this tutorial: windows7 system, jquery1.7.2 version, Dell G3 computer.
In jQuery, if we want to delete elements, we have the following 3 methods: remove(), detach() and empty().
remove() method
In jQuery, we can use the remove() method to delete an element and all the content inside it.
Syntax: $(selector).remove()
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="js/jquery-1.7.2.min.js"></script>
<script>
$(function () {
$("#btn").click(function () {
$("li:nth-child(4)").remove();
})
})
</script>
</head>
<body>
<ul>
<li>HTML</li>
<li>CSS</li>
<li>JavaScript</li>
<li>jQuery</li>
<li>Vue.js</li>
</ul>
<input id="btn" type="button" value="删除" />
</body>
</html>
detach( ) method
In jQuery, although the functions of detach() and remove() are similar, they both delete an element and all its contents, but they also have obvious differences. the difference.
The remove() method is used to "completely" remove elements. The so-called "complete" means that not only the element will be deleted, but also the events bound to the element will be deleted; the
detach() method is used to "semi-completely" delete the element. The so-called "semi-complete" means that only elements will be deleted, but events bound to the elements will not be deleted.
Syntax: $(selector).detach()
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("button").click(function() {
$("p").detach();
});
});
</script>
</head>
<body>
<p>这是一个p元素段落</p>
<button>删除 p 元素</button>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script ></script>
<script>
$(function () {
$("li").click(function () {
alert("欢迎来到php中文网！")
});
$("#btn").click(function () {
var $li = $("li:nth-child(4)").remove();
$($li).appendTo("ul");
});
})
</script>
</head>
<body>
<ul>
<li>HTML</li>
<li>CSS</li>
<li>JavaScript</li>
<li>jQuery</li>
<li>Vue.js</li>
</ul>
<input id="btn" type="button" value="删除" />
</body>
</html> 
In this example, we add a click event to each li element. Clicking any li element will pop up a dialog box. After we click the [Delete] button, the item
When we replace remove() with detach(), we can find that when the li element is deleted and then re-added, the click event previously bound to the element still exists. For the two methods remove() and detach(), it can be summarized as this: the element is deleted and then added again. If you do not want the element to retain the original bound event, you should use the remove() method; if you want the element to retain its original bound events, Elements retain their originally bound events and should use the detach() method.
empty( ) method
In jQuery, we can use the empty() method to "empty" a descendant element.
Syntax: $(selector).empty()
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="js/jquery-1.7.2.min.js"></script>
<script>
$(function () {
$("#btn").click(function () {
$("ul li:nth-child(4)").empty();
});
})
</script>
</head>
<body>
<ul>
<li>HTML</li>
<li>CSS</li>
<li>JavaScript</li>
<li>jQuery</li>
<li>Vue.js</li>
</ul>
<input id="btn" type="button" value="删除" />
</body>
</html>
Related Recommended video tutorial: jQuery Tutorial (Video)
The above is the detailed content of How to delete html tags in jquery. For more information, please follow other related articles on the PHP Chinese website!
Python vs. JavaScript: A Comparative Analysis for DevelopersMay 09, 2025 am 12:22 AMThe main difference between Python and JavaScript is the type system and application scenarios. 1. Python uses dynamic types, suitable for scientific computing and data analysis. 2. JavaScript adopts weak types and is widely used in front-end and full-stack development. The two have their own advantages in asynchronous programming and performance optimization, and should be decided according to project requirements when choosing.
Python vs. JavaScript: Choosing the Right Tool for the JobMay 08, 2025 am 12:10 AMWhether to choose Python or JavaScript depends on the project type: 1) Choose Python for data science and automation tasks; 2) Choose JavaScript for front-end and full-stack development. Python is favored for its powerful library in data processing and automation, while JavaScript is indispensable for its advantages in web interaction and full-stack development.
Python and JavaScript: Understanding the Strengths of EachMay 06, 2025 am 12:15 AMPython and JavaScript each have their own advantages, and the choice depends on project needs and personal preferences. 1. Python is easy to learn, with concise syntax, suitable for data science and back-end development, but has a slow execution speed. 2. JavaScript is everywhere in front-end development and has strong asynchronous programming capabilities. Node.js makes it suitable for full-stack development, but the syntax may be complex and error-prone.
JavaScript's Core: Is It Built on C or C ?May 05, 2025 am 12:07 AMJavaScriptisnotbuiltonCorC ;it'saninterpretedlanguagethatrunsonenginesoftenwritteninC .1)JavaScriptwasdesignedasalightweight,interpretedlanguageforwebbrowsers.2)EnginesevolvedfromsimpleinterpreterstoJITcompilers,typicallyinC ,improvingperformance.
JavaScript Applications: From Front-End to Back-EndMay 04, 2025 am 12:12 AMJavaScript can be used for front-end and back-end development. The front-end enhances the user experience through DOM operations, and the back-end handles server tasks through Node.js. 1. Front-end example: Change the content of the web page text. 2. Backend example: Create a Node.js server.
Python vs. JavaScript: Which Language Should You Learn?May 03, 2025 am 12:10 AMChoosing Python or JavaScript should be based on career development, learning curve and ecosystem: 1) Career development: Python is suitable for data science and back-end development, while JavaScript is suitable for front-end and full-stack development. 2) Learning curve: Python syntax is concise and suitable for beginners; JavaScript syntax is flexible. 3) Ecosystem: Python has rich scientific computing libraries, and JavaScript has a powerful front-end framework.
JavaScript Frameworks: Powering Modern Web DevelopmentMay 02, 2025 am 12:04 AMThe power of the JavaScript framework lies in simplifying development, improving user experience and application performance. When choosing a framework, consider: 1. Project size and complexity, 2. Team experience, 3. Ecosystem and community support.
The Relationship Between JavaScript, C , and BrowsersMay 01, 2025 am 12:06 AMIntroduction I know you may find it strange, what exactly does JavaScript, C and browser have to do? They seem to be unrelated, but in fact, they play a very important role in modern web development. Today we will discuss the close connection between these three. Through this article, you will learn how JavaScript runs in the browser, the role of C in the browser engine, and how they work together to drive rendering and interaction of web pages. We all know the relationship between JavaScript and browser. JavaScript is the core language of front-end development. It runs directly in the browser, making web pages vivid and interesting. Have you ever wondered why JavaScr
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
VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
Notepad++7.3.1
Easy-to-use and free code editor
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
