A possible way to prevent circular references in Javascript using closure.

notSoCircular.js

function A(b) {
    this.notSoFunky = 100;
    this.setB(b);
}

A.prototype = {
    setB: function(b) {
        this.B = function() {
            return b;
        };
    }
}

function C(b) {
    this.B = b;
}

function B() {
    this.funky = 5;
}

B.prototype = {
    setA: function(a) {
        this.A = a;
    },
    setC: function(c) {
        this.C = c;
    }
}


bb = new B();
// cc = new C(bb);
// bb.setC(cc);
aa = new A();
aa.setB(bb);
bb.setA(aa);

// console.log(cc); // UGLY CIRCULAR REFERENCE!!!
console.log(aa);
console.log(aa.B());
console.log(bb);

// Check change propagation
bb.funky = 10;

console.log(aa.B());
console.log(bb);

aa.notSoFunky = 50;

console.log(aa.B().A);
console.log(bb.A);