JavaScript-da id bilan element qo'shish
arr o'zgaruvchisida
obyektlar massivi yotadi:
let arr = [
{
id: 'GYi9GauC4gBF1e2SixDvu',
prop1: 'value11',
prop2: 'value12',
prop3: 'value13',
},
{
id: 'IWSpfBPSV3SXgRF87uO74',
prop1: 'value21',
prop2: 'value22',
prop3: 'value23',
},
{
id: 'JAmjRlfQT8rLTm5tG2m1L',
prop1: 'value31',
prop2: 'value32',
prop3: 'value33',
},
];
Yana bitta o'zgaruvchida bizning massivimizga yangi element qilmoqchi bo'lgan obyekt saqlansin:
let newElem = {
id: 'GMNCZnFT4rbBP6cirA0Ha',
prop1: 'value41',
prop2: 'value42',
prop3: 'value43',
};
Keling, bunday elementni immutably (o'zgarmas) qo'shishni ko'rib chiqaylik. Massivning nusxasini yaratamiz va unga yangi element qo'shamiz:
let copy = Object.assign([], arr);
copy.push(newElem);
let res = copy;
Yoki destructuring-dan foydalanish mumkin:
let res = [...arr, newElem];
Obyektlar massivi berilgan. Tugma yarating,
unga bosganda unga yangi element
qo'shilsin. id funksiya tomonidan
yaratilsin.
