In this tutorial you are going to create and use a thumbnails preview slider with jQuery. Thumbnail preview slider will hwlp you to create cool photo/image galleries.
Dropzone.js is a light weight JavaScript library for jQuery that turns an HTML element into a dropzone. This means that a user can drag and drop a file onto it, and the file gets uploaded to the server via AJAX. It supports image previews and shows nice progress bars.
The imgPreview plugin allows your users to preview an image before clicking on it and, out of necessity, will preload the image so when a user does click through to it there is no waiting time!