No-Library (pure JS), HTML, CSS, JavaScript
Fun practice problem
Starting point for creating JSFiddles with React. This uses React with Addons.
Standard fiddle
Originally from http://bl.ocks.org/mbostock/4062045
jQuery Compat (edge), HTML, CSS, JavaScript
jQuery 2.1.0, HTML, CSS, JavaScript
jQuery 1.7.1, HTML, CSS, JavaScript
jQuery 1.11.0, HTML, CSS, JavaScript