Object.prototype.hasProperty = function(properties) {
  var finalProperty = this;
  var property;
  var child;

  if (properties === undefined) {
    return true;
  } else if (properties.constructor !== Array) {
    properties = [properties];
  } else if (properties.length === 0) {
    return true;
  }

  property = properties.shift();
  child = this[property];

  if (child === undefined) {
    return false;
  } else {
    return child.hasProperty(properties);
  }
}

var a = {b: {c: {}}};

if (a.hasProperty(['b', 'c'])) {
  console.log("definido!");
} else {
  console.log("indefinido!");
}