Undefined

[eTianbun]

Why do i get undefined with this:

function a(){}a.name="value";b=new a();alert(b.name)//prints:undefined.

[ShadowMage]

You are adding a property to the a object, not it's prototype. You could do:

function a() {   this.name='value';}

or

a.prototype.name='value';

If you want properties and methods to be part of every instance of an object, you need to add them to the prototype. Otherwise you will just create the property/method on the single instance of the object.

[eTianbun]

Thanks alot for the info! :-)