Menghapus Nilai Null dari Objek di Javascript-Contoh kode

const obj = {
  foo: '🍎',
  bar: '🍌',
  baz: null,
  qux: undefined,
};

// iterasi atas properti enumerable objek itu sendiri
for (const key of Object.keys(obj)) {
  // jika nilai properti adalah null, hapus properti tersebut
  if (obj[key] === null) {
    delete obj[key];
  }
}

console.log(obj);
// { foo: '🍎', bar: '🍌' }

const obj = {
  name: 'John',
  age: null,
  job: 'teacher',
  city: null
};

// gunakan untuk loop
for (let key in obj) {
  if (obj[key] === null) {
    delete obj[key];
  }
}

// gunakan Object.keys()
const obj = {
  name: 'John',
  age: null,
  job: 'teacher',
  city: null
};

const newObj = Object.keys(obj).reduce((acc, key) => {
  if (obj[key]) {
    acc[key] = obj[key];
  }
  return acc;
}, {});

console.log(newObj); // { name: 'John', job: 'teacher' }