A wide variety of useful plugins are written and available for use. They cover many aspects of development, such as animations, graphics, forms, UI, and responsiveness. To maintain all plugins in a centralized location, a plugin repository was launched at http://plugins.jquery.com in 2013. However, this site now offers a read-only access to plugins and new releases can be made to the NPM (Node Package Manager). Plugins can be downloaded and used from the NPM.
In this chapter, let's get started with creating our own plugins. We will also download and use a popular jQuery plugin for validation of forms.