Microsoft® JScript®
constructor Property
 Language Reference 
Version 2 

See Also                  Applies To

Specifies the function that creates an object.

The required object argument is the name of an object or function.

The constructor property is a member of the prototype of every object that has a prototype. This includes all intrinsic JScript objects except the Global and Math objects. The constructor property contains a reference to the function that constructs instances of that particular object. For example:
x = new String("Hi");
if (x.constructor == String)
   	// Do something (the condition will be true).
function MyFunc {
	// Body of function.

y = new MyFunc;
if (y.constructor == MyFunc)
   	// Do something (the condition will be true).