jQuery is a JavaScript library that allows developers to make dynamic web sites easier and quicker. It provides an easy way of adding new features to existing programs and browsers, by letting you extend JavaScript with useful functions that perform tasks such as finding text in an HTML document, processing HTML pages programmatically, and allowing viewers to interact with the page. jQuery is the most popular JavaScript library and is among the most widely supported by web browsers. This means that the user can be sure that desired functionality will be available in their browser. Web developers can then focus on improving the user experience rather than worrying about compatibility issues with browser vendors. And, jQuery helps to get more done with less work by making it easier to perform common tasks such as tracking changes and formatting text.
Jquery