JAVASCRIPT

lodash filter object keys

var user = {
  "first_name":"taylor",
  "last_name":"hawkes",
  "full_name": "taylor hawkes"
};

var userCleaned = _.pickBy(user, function(value, key) {
  return (key === "first_name" || key === "last_name");
});

//userCleaned is now:
//{
//   "first_name": "taylor",
//   "last_name": "hawkes"
//}

lodash filter array objects

const arr = [
  {},
  { hello: null },
  { hello: false },
  { hello: 0 },
  { hello: 'world' }
];

_.filter(arr, 'hello'); // [{ hello: 'world' }]