objectsAreEqual.js

function objectsAreEqual(objectA, objectB) {
  
  if (objectA === objectB) {
    return true;
  }

  var objectAKeys = Object.keys(objectA);
  var objectBKeys = Object.keys(objectB);

  if (objectAKeys.length != objectBKeys.length) {
    return false;
  }

  for (var i = 0; i < objectAKeys.length; i++) {
    var prop = objectAKeys[i];
    if (objectA[prop] !== objectB[prop]) {
      return false;
    }
  };

  return true;
};