Can Javascript do this

Question

make this:

/*this can't run*/
var o = {first:1};
function f(arg,o){
   /*
    can i do something make this function's this=o
   */
   alert(arg+this.first);
}
f(2,o);

equal this:

var o = {
  first:1,
  f:function(arg){
    alert(arg+first);
  }
}
o.f(2);

and I know we can use this:

f.apply(o,1);

but I want to handle all things in f:

function f(arg,o){
    /*magic*/
    alert(arg+this.first);
}

Answer 1

Is this what you mean:

var o = 
{ 
  first : 1, 
  f : function(arg)
  { 
    alert(arg + this.first);
  }
}