In order to use jQuery, a powerful JavaScript library, to simplify the web development process, you first need to download the corresponding file and import it. This article will introduce in detail how to download and import the files required by jQuery, and attach specific code examples.
1. Download the jQuery file
Before using jQuery, you first need to download the corresponding jQuery file. You can download it through the official website https://jquery.com/ and select the appropriate version to download. Usually we will choose the compressed version (minified) file, because this can reduce the file size and improve the web page loading speed.
For example, we downloaded the compressed version of jQuery 3.5.1. After downloading, we got a file named "jquery-3.5.1.min.js".
2. Introduce the jQuery file into the web page
After downloading the jQuery file, you need to introduce it into the web page so that the web page can use jQuery normally. Functionality provided by the library. Use the <script> tag in the <head> tag of the HTML file to introduce the jQuery file. </script>
The following is a simple sample code for introducing jQuery files:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>使用jQuery的网页</title>
<script src="jquery-3.5.1.min.js"></script>
</head>
<body>
<!-- 这里是网页内容 -->
</body>
</html>In the above code, we use the <script> tag in the <head> tag to introduce the downloaded jQuery file "jquery-3.5.1.min.js". In this way, the jQuery library will be automatically loaded and executed when the web page loads. </script>
3. Confirm that jQuery is loaded successfully
In order to confirm that the jQuery file has been loaded successfully, you can write a piece of jQuery code in the web page for testing. The following is a simple sample code that demonstrates how to pop up a "Hello, jQuery!" prompt box after the page is loaded:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>测试jQuery加载</title>
<script src="jquery-3.5.1.min.js"></script>
<script>
$(document).ready(function(){
alert("Hello, jQuery!");
});
</script>
</head>
<body>
<!-- 这里是网页内容 -->
</body>
</html>In the above code, we use the $ provided by jQuery (document).ready() method executes the code after the page is loaded. When the page is loaded, a prompt box will pop up showing "Hello, jQuery!", proving that the jQuery file has been successfully loaded and used.
With the above steps, you can easily download and introduce the jQuery file and test whether it loads successfully. In actual development, the powerful functions of jQuery will greatly simplify and improve the efficiency of your web page development. I wish you a happy use!
The above is the detailed content of Download and import the files required for jQuery. 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(){ $("img").hide(); },毫秒值);”语句，通过定时器来延迟。
axios与jquery的区别是什么Apr 20, 2022 pm 06:18 PM区别：1、axios是一个异步请求框架，用于封装底层的XMLHttpRequest，而jquery是一个JavaScript库，只是顺便封装了dom操作；2、axios是基于承诺对象的，可以用承诺对象中的方法，而jquery不基于承诺对象。
jquery怎么修改min-height样式Apr 20, 2022 pm 12:19 PM修改方法：1、用css()设置新样式，语法“$(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“$(元素).attr("style","min-height:新值")”。
jquery怎么在body中增加元素Apr 22, 2022 am 11:13 AM增加元素的方法：1、用append()，语法“$("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
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.
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),
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
