1const object = { a: 5, b: 6, c: 7  };
2const picked = (({ a, c }) => ({ a, c }))(object);
3
4console.log(picked); // { a: 5, c: 7 }

1var buttons = {
2  foo: 'bar',
3  fiz: 'buz'
4};
5
6for ( var property in buttons ) {
7  console.log( property ); // Outputs: foo, fiz or fiz, foo
8}

1const object = { a: 5, b: 6, c: 7  };const subset = (({ a, c }) => ({ a, c }))(object);console.log(subset); // { a: 5, c: 7 }