In the array-based version, we were able to add multiple elements to the Stack class at the same time. Since we are working with an object, this version of the push method only allows us to push a single element at a time. We can see the push method code below:
push(element) { this.items[this.count] = element; this.count++;}
In JavaScript, an object is a set of key and value pairs. To add an element to the stack, we will use the count variable as the key of the items object and the element will be its value. After pushing the element to the stack, we increment the count.
We can use the same example as before to use the Stack class and push the elements 5 and 8:
const stack = new Stack();stack.push(5);stack.push(8); ...
