Chained is simple plugin for chained selects. It works with both jQuery and Zepto. You can choose from two different versions. Use jquery.chained.js if you do not want to make external queries for setting content of child selects. This version uses data attirbutes to decide the content. For more complex scenarios maintaining data attributes will get cumbersome. Also if you want to make queries against database use jquery.chained.remote.js instead. This version makes an external AJAX query and...