JSFiddle - React, Tailwind, and code Playground

JavaScript

var GroceryList = function() {
        this.items = []; // array yo store groceries
       
        // add to object method to add groceries to list
        this.addStuff = function(food, quantity, price) {
            this.items.push({
                food: food,
                quantity: quantity,
                price: price
            });
        };
    };

var groceryList = new GroceryList();
groceryList.addStuff('cookie', 2, 1.00);
groceryList.addStuff('brownie', 1, 2.50);

console.log(groceryList.items);