Javascript functional programming _ javascript skills

Javascript functional programming the object nature of JavaScript functional programming:
Function ()
{
Var x = "something ";
Return B (){
// Do with x;
}
}
Var c = ();
Equivalent
Function ()
{
This. x = "dosomething ";
This. B = function (){
// Do with this. x
}
}
Var c = new ();

However
1) functional programming instinctively avoids the construction of useless objects
Function programming encourages you to call closure construction only when closure is used.
Object-oriented objects are usually constructed in advance and ready to be there
2) functional programming protects private variables
X will not be accessed outside the closure.
3) release resources as well as closures and objects.
For example, c = null; setTimeout (CollectGarbage, 100 );