Javascript_DS/Queue.html at main · Thellexcodes/Javascript_DS · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        class Queue{

            constructor(){
                this.items = [];
            }

            enqueue(element){
                this.items.push(element);
            }

            dequeue(){
                if(this.items.length === 0)
                return "Underflow"
            return this.items.shift();
            }

            front(){
                if(this.items.length === 0)
                return "Empty Queue";
            return this.items[0];
            }

            IsEmpty(){
                return this.items.length === 0;
            }

            printQueue(){
                return this.items.toString();
            }
        }

        let queue = new Queue();
        queue.enqueue(10);
        queue.enqueue(20);
        queue.enqueue(30);
        console.log(queue.printQueue());
        console.log(queue.front())
        queue.dequeue();
        console.log(queue.printQueue())
        console.log(queue.IsEmpty());
    </script>
</body>
</html>