“4. Anda ingin mencetak jumlah tambahan setiap kali Anda instantiate objek menggunakan baru di JS” Kode Jawaban

4. Anda ingin mencetak jumlah tambahan setiap kali Anda instantiate objek menggunakan baru di JS

class Key {
    // The static property
    static lastKey = 0;
    
    // The instance property using the class fields proposal syntax
    // Note I didn't initialize it with 1, that's a bit misleading.
    key;
    
    constructor() {
        // Increment and assign
        this.key = ++Key.lastKey;
    }

    print_key() {
        console.log(this.key)
    }
}

const key1 = new Key();
const key2 = new Key();
const key3 = new Key();

key1.print_key();
key2.print_key();
key3.print_key();