I found that RequireJS has became one of my favorite library, so I need to know it deeply to make it my strong point. This article is log of code reading for 2.0.4. require.js it has many helper like bind(), mixin() and each(). IE6 support: there is a comment "When that browser dies, this can be removed"... handling error: overriding this method or putting break point here will help me to debug. i