The some question in 'example.js'

[mingshanjianke]

When I read the code in 'example.js', I am doubt that the code statement "if (passedArgs[argCtr].name == getParamNames(args.callee)[argCtr])". When 'passedArgs[argCtr].name' is 'undefined' and 'getParamNames(args.callee)[argCtr]' is also the 'undefined',the statement will be executed.But I can not understand why the 'passedArgs[argCtr].name' is 'undefined' ,the 'logObj = {'type': 'callback_passed', 'name': passedArgs[argCtr].name, 'index': c, 'time': Date.now()};' is reasonable. Could you give me some advice?Thanks!