我从GoogleCodePlayground中获取了这个http://code.google.com/apis/ajax/playground//*CLOSURE*Whenafunctionisdefinedinanotherfunctionandit*hasaccesstotheouterfunction'scontextevenafter*theouterfunctionreturns*AnimportantconcepttolearninJavascript*/functionouterFunction(someNum){varsomeString='Hai!';varconte