Memory optimization in the code

Hi,
I have wrote a software which uses a lot of object instantiated only at the boot.
I need to save memory and delete unused data.

for example, this code allow me to instantiate more objects each assigned to a multicolor LED:

TRILED=function(pin1,pin2){
  this.id1=pin1;
  this.id2=pin2;
};
TRILED.prototype.reset=function(){
  this.id1.reset();
  this.id2.reset();
};
TRILED.prototype.setRED=function(){
  this.id1.set();
  this.id2.reset();
};

TRILED.prototype.setGREEN=function(){
  this.id1.reset();
  this.id2.set();
};
TRILED.prototype.setYELLOW=function(){
  this.id1.set();
  this.id2.set();
};

L1=new TRILED(A0,A1)
L2=new TRILED(A2,A3)
L3=new TRILED(A4,A5)

The question is: Can I safely delete the TRILED object after their initialization? Can safely call the method set* and reset in the future ?

It seems to works but I need a confirmation, I want to do this:

L1=new TRILED(A0,A1)
L2=new TRILED(A2,A3)
L3=new TRILED(A4,A5)

delete TRILED;

L1.setRED();
L2.setGREEN();
....etc...etc