Property Statis

class Counter {
  // Definisikan property statis
  static count = 0;
  
  constructor() {
    // Tambah nilai count statis setiap kali instance baru dibuat
    Counter.count++;
  }
}

console.log(Counter.count); // 0

// Buat beberapa instance
const counter1 = new Counter();
const counter2 = new Counter();

console.log(Counter.count); // 2

class MathConstants {
  static GOLDEN_RATIO = 1.61803;
}

console.log(MathConstants.GOLDEN_RATIO); // 1.61803