I don't understand your contradiction to the parent poster. All JavaScript functions are closures, including anonymous functions that don't reference any lexica

I don't understand your contradiction to the parent poster. All JavaScript functions are closures, including anonymous functions that don't reference any lexically-scoped variables, and even named functions at the top level, which close over the global environment[1]. Also, callback functions don't have to be anonymous functions, you can just as easily pass named functions. 1: http://javascriptweblog.wordpress.com/2010/10/25/understanding-javascript-closures/ http://javascriptweblog.wordpress.com/2010/10/25/understandi...