What is jQuery? jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.

Examples in Each Chapter Our "Try it Yourself" editor makes it easy to learn jQuery. You can edit code and view the result in your browser:

Overview jQuery, at its core, is a Document Object Model (DOM) manipulation library. The DOM is a tree-structure representation of all the elements of a Web page. jQuery simplifies the syntax for finding, selecting, and manipulating these DOM elements.

2025年8月11日 · jQuery is a lightweight JavaScript library that simplifies the HTML DOM manipulating, event handling, and creating dynamic web experiences.

As of jQuery 1.11/2.1, we no longer link source maps to compressed releases by default. Browse the jQuery CDN at releases.jquery.com for a full list of assets, including older and historical versions.

The purpose of jQuery is to make it much easier to use JavaScript on your website. jQuery takes a lot of common tasks that require many lines of JavaScript code to accomplish, and wraps them into methods that you can call with a single line of code.

2025年8月5日 · In summary, jQuery is a JavaScript library that simplifies client-side scripting of HTML. It offers numerous advantages, such as simplicity and cross-browser compatibility, but also has limitations, including file size and dependency.

We hope that this tutorial will get you started properly on jQuery and come to love it as much as we do. A basic knowledge of HTML is recommended when learning jQuery.

There's a lot more to learn about building web sites and applications with jQuery than can fit in API documentation. If you're looking for explanations of the basics, workarounds for common problems, best practices, and how-tos, you're in the right place!

2024年6月25日 · What Is jQuery? jQuery is an open-source minified JavaScript library created for simplified JavaScript operations. You can use jQuery to quickly code a set of different commands that would take much longer if you’d use HTML code.