And, one thing is still very important, the object really does not
have the constructor property
function a(){}
b=new a
Object
b.constructor==a
true
b.hasOwnProperty(constructor)
false
b.__proto__.constructor==a
true
b.__proto__.constructor
a()
and I really think the constructor property
When you create a new function it has a prototype property, which
has a constructor property which refer to the created function:
function F(){};
F.prototype.constructor === F = true
So you will be able to get the class of an instance:
var obj = new F;
obj.constructor === F = true
When we
Thanks very much, and I think this constructor property is really not
very reliable, such as:
function a(){}
a.prototype={b:123}
b=new a
b.constructor==Object //true
and:
function a(){}
a.prototype=new String(aaa);
b=new a;
b.constructor==String
you can change the constructor before or after you
