Dynamically add functions to a class

[mikesta707]

Is there a way to dynamically add a function to an already existing class? What I want to do is create a function that will allow the user to define new functions that are not already in the class. I have the following so far which doesn't produce any errors, but doesn't work even in the slightest

 

function setCustomCriteria(func, name, where){
eval(func);
eval("this."+name+"="+name);
eval("this."+name+"()");
}

 

and here is where I call it

 

function go(){ alert("Worked!"); }

object.setCustomCriteria(go, "go", "nowhere");

 

I'm sure that is horribly wrong, but that was just a shot in the dark because, frankly, im sort of lost

[mikesta707]

Nevermind, figured it out. This is awesome!

 

function setCustomFunc(name){
       //The line below will add the function that whatever class this function is part of
eval("this."+name+"="+name);
        // the line below will execute the function
//eval("this."+name+"()");


}