javascript - Iterating objects in es6 and returning new object -

using es6 javascript possible iterate on object , return new object. example:

const people = {     'sally': {         age: 22,         sex: 'female',     },     'john': {         age: 64,         sex: 'male',     },     'sam': {         age: 12,         sex: 'female',     },       };  const ages = people.somees6iteratingobjectfunction((index, person) => {     return { object.keys(people)[index]: person.age }; });  console.log(ages); // { 'sally': 22, 'john': 64, 'sam': 12, }    

you can use reduce method of array prototype. works in es5.

const people = {      'sally': {          age: 22,          sex: 'female',      },      'john': {          age: 64,          sex: 'male',      },      'sam': {          age: 12,          sex: 'female',      },        };    let result = object.keys(people).reduce(function(r, name) {    return r[name] = people[name].age, r;  }, {});    document.write(['<pre>', json.stringify(result, 0, 3), '</pre>'].join(''));