TA貢獻1993條經驗 獲得超6個贊
v
({id, title}) => ({id, title})Object.assign[p]
function pick(o, ...props) {
return Object.assign({}, ...props.map(prop => ({[prop]: o[prop]})));}configurable
function pick(o, ...props) {
var has = p => o.propertyIsEnumerable(p),
get = p => Object.getOwnPropertyDescriptor(o, p);
return Object.defineProperties({},
Object.assign({}, ...props .filter(prop => has(prop))
.map(prop => ({prop: get(props)})))
);}
TA貢獻2021條經驗 獲得超8個贊
pick
function pick(o, ...fields) {
return fields.reduce((a, x) => {
if(o.hasOwnProperty(x)) a[x] = o[x];
return a;
}, {});}var stuff = { name: 'Thing', color: 'blue', age: 17 };var picked = pick(stuff, 'name', 'age');
TA貢獻1784條經驗 獲得超2個贊
orig
Array#reduceinitialValue
const orig = {
id: 123456789,
name: 'test',
description: '…',
url: 'https://…',
};
const filtered = ['id', 'name'].reduce((result, key) => { result[key] = orig[key]; return result; }, {});
console.log(filtered); // Object {id: 123456789, name: "test"}
TA貢獻1798條經驗 獲得超7個贊
const pick = (O, ...K) => K.reduce((o, k) => (o[k]=O[k], o), {})舉報