The main difference between Javascript and JQuery is that Javascript is a scripting language and JQuery is a Javascript library. Jquery has a number of built-in functions that make coding easier than coding with Javascript.

Javascript

JavaScript is a  high-level, weakly typed, multi-paradigm programming language and is most commonly used in web development. Javascript first appeared on December 4, 1955. JavaScript supports event-driven, procedural and Object-Oriented programming styles.

JQuery

Jquery is a small and feature-rich Javascript library that makes client-side scripting using Javascript simpler. JQuery is not a programming language. It has several built-in functions to make coding easier.

To use JQuery in an HTML document, you must link the library using the <script> tag.

<script src="path_to the file/jquery.js"/>

Some useful links