I have defined product as below
function Product(name){ this.name=name, this.category="food", this.price=10, this.getDiscount=function(){ return this.price*5/100 } }
Now I am going to create an object using above constructor function
var product= new Product("Burger")
Now I want to change that object to represent drink name Coca Cola
Lets define method to change its properties
function changeProduct(product){ product.name="Coca Cola"; product.category="Drink"; product.price=12; }
Here you are passing reference to the product object. So whatever changes inside the function will change the original object
Now we can call the changeProduct()
method
>changeProduct(product)
Then you can call the getDiscount()
method to see changes
>console.log("Discount is "+product.getDiscount())
>Discount is 0.6