gistfile1.js

function Bar() {
    // Parent constructor
    Bar.parent.call( this );
    this.v2 = null;
}

OO.inheritClass( Bar, Foo );

Bar.prototype.setValue = function f( val ) {
    // Call parent method
    f.parent( val );
    this.v2 = val;
};

Bar.prototype.getValue = function f() {
    return 35 - f.parent();
};



// OO.inheritClass would have to do something like:
Bar.prototype.getValue.parent = Foo.prototype.getValue;