Despite our warnings about the horrors of pregnancy, childbirth, and babies, some of you are still destined to become parents, if you haven't done it already. Congratulations! Now prepare to be terrified, because you have no idea what you're about to face. And we're not even talking about that first diaper change.
jQuery has two usage styles: 1  Via the $ function, which is a factory method for the jQuery object. These functions, often called commands, are chainable as they all return jQuery objects. 2  Via $.-prefixed functions. These are utility functions, which do not act upon the jQuery object directly.
jQuery is a cross-platform JavaScript library designed to simplify the client-side scripting of HTML. It is free, open-source software using the permissive MIT License. Web analysis indicates that it is the most widely deployed JavaScript library by a large margin. jQuery's syntax is designed to make it easier to navigate a document, select DOM elements, create animations, handle events, and develop Ajax applications. jQuery also provides capabilities for developers to create plug-ins on top of the JavaScript library.