title: How to find the owner of a property in Javascript
body: <p>Ok, because my initial question sounds unclear, so I decided to edit it. My question is how do you find out who defined a certain property, for example, the <code>parseInt</code> function, how do I know on which object it was definded like if <code>parseInt</code> was definded on the <code>window</code> object or the <code>document</code> object or whatever object it is? Thank you</p>
  
  <p>I know the <code>parseInt</code> was definded the <code>window</code> object, I am just using it as an example in general, I am not specifically asking what object definded the <code>parseInt</code> property.</p>
  
  <p>Also, please don't show me jQuery codes since I don't know jQuery that very good.</p>