Javascript_DS/stacks.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 Stack{
            constructor(){
                this.items = []
            }

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

            pop(){
                if(this.items.length === 0)
                    return "Empty Stack for pop";
                return this.items.pop();

        }
        peek(){
            if(this.items.length=== 0)
            return "Empty Stack";
        return this.items[this.items.length - 1];
        }

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

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

    let stack = new Stack();
    stack.push(10);
    stack.push(20);
    stack.push(30)
    stack.push(40);
    console.log(stack.printStack());
    console.log(stack.peek());
    stack.pop();
    console.log(stack.printStack());
    stack.pop();
    console.log(stack.IsEmpty());
    stack.pop()
    stack.pop()
    stack.pop()
    console.log(stack.IsEmpty());
    </script>
</body>
</html>