How to introduce jquery library online

In web development, jQuery is a very popular JavaScript library. Its simplified API and cross-browser compatibility make it one of the preferred JavaScript libraries for many developers. In this article, we will explore how to introduce the jQuery library online.

1. What is the online introduction of jQuery library?

Introducing the jQuery library online means introducing the jQuery library from the jQuery official website or CDN (Content Delivery Network) to speed up web page loading. A CDN is a network system that delivers content on demand to distribute it across multiple servers and geographical locations in a network, making web pages load faster.

2. Why should we introduce jQuery library online?

In terms of web page loading speed, the jQuery library is a very large file, generally dozens of KB. If you have to download the jQuery library from the local server every time you load a page, it will slow down the loading speed of the web page and affect the user experience. And if you download the jQuery library from a CDN, it will download the jQuery library from the nearest CDN server and provide it to the user at the fastest speed, thus greatly improving the loading speed of the web page.

3. How to introduce jQuery library online?

Before using the jQuery library, you need to introduce it first. There are two ways to introduce the jQuery library online: download it directly from the official website, or download it from a CDN.

Download from the official website:

Before downloading the jQuery library, you need to visit the official website and select the version you want to download. Then add the following in the HTML code:

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

This will load the jQuery library from the file system and add it to the HTML page.

Download from CDN:

Many large Internet companies provide CDN services, including Google, Microsoft, jQuery and CDNJS, etc. Here we take Google CDN as an example and add the following content to the HTML code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>

This will download the jQuery library from the Google CDN server and add it to the HTML page.

4. Summary

In web development, choosing to introduce the jQuery library online is a wise decision. It improves web page loading speed and makes it easier for users to access the website. This article introduces how to introduce the jQuery library online so that you can quickly add the jQuery library to your web page.

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