jQuery

jQuery is a multi-browser JavaScript library designed to simplify the client-side scripting of HTML.
It was released in January 2006 at BarCamp NYC by John Resig.
It is currently developed by a team of developers led by Dave Methvin.

you must have basic knowledge of:
-HTML
-CSS
-JavaScript

It is a lightweight, “write less, do more”, JavaScript library.

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.

jQuery also simplifies a lot of the complicated things from JavaScript, like AJAX calls and DOM manipulation.

jQuery library features are as below:

-HTML/DOM manipulation
-CSS manipulation
-HTML event methods
-Effects and animations
-AJAX
-Utilities

It 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. With a combination of versatility and extensibility, jQuery has changed the way that millions of people write JavaScript.