stack of javascript created by arrbxr - https://repl.it/@arrbxr/stack-of-javascript

index.js

// Show the complete implementation 
// of the stack class

function Stack() {
    this.dataStore = [];
    this.top = 0;
    this.push = push;
    this.pop = pop;
    this.peek = peek;
    this.clear = clear;
    this.length = length;
}

// push function
function push(element) {
    this.dataStore[this.top++] = element;
}

// peek function
function peek() {
    return this.dataStore[this.top - 1];
}

// pop function
function pop() {
    return this.dataStore[--this.top];
}

// clear function
function clear() {
    return this.top = 0;
}

// length function
function length() {
    return this.top;
}

var s = new Stack();

s.push("ravi");
s.push("raj");
s.push('Abhishek');
console.log("Lenght = " + s.length());

console.log(s.peek());

var popped = s.pop();
console.log("The Popped Element is: " + popped);
console.log(s.peek());
s.push('simpee');
console.log(s.peek());
s.clear();
console.log("length: " + s.length());
console.log(s.peek());
s.push("Pagla");
console.log(s.peek());