var obj = {a: 1, b: 2, c: 3, d: 4, e: 5 }; ['c', 'e'].forEach(e => delete obj[e]); // obj is now {a:1, b:2, d:4}
const obj = { a: 'dog', b: 'cat', c: 'mouse', d: 'cow', e: 'horse', }; const {a, e, ...updatedObject} = obj; // output console.log(updatedObject)