Maydonlar bo'yicha saralash
Bizda tartiblash uchun bir massiv obyektlar mavjud:
let users = [
{ name: "John", age: 20, surname: "Johnson" },
{ name: "Pete", age: 18, surname: "Peterson" },
{ name: "Ann", age: 19, surname: "Hathaway" },
];Buning bajarish uchun odatiy usul:
// nom bo'yicha (Ann, John, Pete)
users.sort((a, b) => (a.name > b.name ? 1 : -1));
// yosh bo'yicha (Pete, Ann, John)
users.sort((a, b) => (a.age > b.age ? 1 : -1));Buni biz bundan ham qisqaroq qila olamizmi?
users.sort(byField("name"));
users.sort(byField("age"));Shunday qilib, funktsiyani yozish o’rniga byField(fieldName) ni qo’ying.
Buning uchun ishlatilishi mumkin bo’lgan byField funktsiyasini yozing.
function byField(fieldName) {
return (a, b) => (a[fieldName] > b[fieldName] ? 1 : -1);
}