facebook/react — pull request #450 by lrowe (2013-10-29 01:53:53+00:00)
Title: Make 'disabled' MUST_USE_ATTRIBUTE for compatibility with CSS [disabled] selectors

When a ReactDOMComponent is created with the property `disabled: true` subsequently setting the property to `disabled: false` the HTML attribute `disabled="true"` was being left in the DOM.

Example: http://jsfiddle.net/kb3gN/409/