Methode zum Abrufen bestimmter Schlüssel-Wert-Paare in einem Array-Objekt

Question

records = [{id: 231, first_name: "Jack", last_name: "Aston", email: "jack55@xyz.com"}, {id: 232, first_name: "Roy", last_name: "Dillon", email: "roy@xy.com"}, {id: 233, first_name: "Jacy", last_name: "Wilson", email: "jacy@x.com"}]

fields = ['id', 'email', 'last_name']

Wie erhalte ich nur „id“, „email“ und „last_name“ aus dem Datensatz, sodass die Daten in JavaScript so aussehen?

new_records = [{id: 231, email: "jack55@xyz.com", last_name: "Aston"}, {id: 232, email: "roy@xy.com", last_name: "Dillon"}, {id: 233, email: "jacy@x.com", last_name: "Wilson"}]

Answer 1

const newRecords=records.map(item=>{return {id,email,last_name}})

Answer 2

const records = [{id: 231, first_name: "Jack", last_name: "Aston", email: "jack55@xyz.com"}, {id: 232, first_name: "Roy", last_name: "Dillon", email: "roy@xy.com"}, {id: 233, first_name: "Jacy", last_name: "Wilson", email: "jacy@x.com"}]

const fields = ['id', 'email', 'last_name']

console.log(records.map(i=>Object.fromEntries(fields.map(f=>[f, i[f]]))))