How should I initialize Function constructor function :
(both seems to work.)
like this :
var t= new Function ("a","alert(a)");
t(3)//3
alert(Object.prototype.toString.apply(t)); //[object Function]
or
var t= Function ("a","alert(a)"); //without new
t(3) //3
alert(Object.prototype.toString.apply(t));//[object Function]
Is there any difference ?
They are identical. From the spec:
When
Functionis called as a function rather than as a constructor, it creates and initialises a new Function object. Thus the function callFunction(…)is equivalent to the object creation expression newFunction(…)with the same arguments.
Both are same.
But if you use new, every property inside the object will have a new instance.
