【javascript】arguments.callee、func.caller

1、arguments.callee

   function test () {console.log (arguments.callee );}  print their function

   Use: perform a recursive function in use immediately

           was num = (function () {

                  if(n == 1) {

                        return 1;

                  }

　　  　　  return n * arguments.callee(n - 1);

　　   }())

 

2, func.caller   ( that environment func is called, ES5 strict mode of error)

　　function test() { demo(); }

　　Demo function () {the console.log (demo.caller);}       // test print function

　　demo();