queue.js

// 2, 8, 10, 4, 3, 6, 7

class Queue {
  constructor() {
    this.list = [];
    this.pointer = 0;
  }
  
  enqueue(value) {
    this.list.push(value);    
  }
  
  dequeue() {
    this.pointer += 1; 
  }
  
  printAll() {
    for(let index = this.pointer; index < this.list.length; index += 1) {
      console.log(this.list[index]);
    }
  }
}


const queue = new Queue();


queue.enqueue(2);
queue.enqueue(8);
queue.enqueue(10);
queue.enqueue(4);
queue.enqueue(3);
queue.enqueue(6);
queue.enqueue(7);

queue.printAll();

queue.dequeue();
queue.dequeue();
queue.dequeue();

queue.printAll();