How to download and install jQuery

jQuery is a widely used JavaScript library on which many websites and applications today are developed. Learning and mastering jQuery can not only help you better understand JavaScript, but also improve your web development efficiency. In this article, we will show you how to download and install jQuery.

1. Download jQuery

First, you need to go to the official website of jQuery https://jquery.com/ to download the latest version. At the top of the homepage, you'll see a "Download" link. Click through to this page and you'll see two versions of jQuery: compressed and uncompressed.

The compressed version is the final version used in the production environment. It is compressed, so the code looks more concise, smaller in size, and loads faster. The uncompressed version is the version used in development environments. It is not compressed and is easier to view and debug.

If you want to download both the compressed and uncompressed versions, you can click the "Download the compressed, production jQuery 3.6.0" and "Download the uncompressed, development jQuery 3.6.0" links.

2. Installing jQuery

Installing jQuery is very simple, you just need to introduce the downloaded jQuery file into your web page. In your HTML page, include the jQuery file using the <script> tag. If you downloaded the compressed version, you can use the following code to introduce jQuery:

<script src="jquery-3.6.0.min.js"></script>

If you downloaded the uncompressed version, you can use the following code to introduce jQuery:

<script src="jquery-3.6.0.js"></script>

Please note that you need to Change the name to the name of the jQuery version you downloaded.

3. Using jQuery

Now that you have successfully installed jQuery, you can start using jQuery to write more interactive web pages. For example, add a button to your HTML page:

<button id="btn">Click Me</button>

Then, add the following code to your JavaScript file:

$(document).ready(function(){
  $("#btn").click(function(){
    alert("Hello world!");
  });
});

The purpose of this code is to wait for the page to finish loading. Add a click event to the button, and when the button is clicked, a popup box will be displayed.

Summary:

In this article, we showed you how to download and install jQuery, and how to use jQuery to write more interactive web pages. Downloading and installing jQuery is very easy and requires only a few simple steps. If you want to improve your web development efficiency, we highly recommend you learn and master jQuery.

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