The 'new' operator in JavaScript is used to create an instance of an object. In simple terms, it's like building a house using the blueprint. The blueprint here is an object, and the house is an instance of the object. Every time you use 'new', you create a new house based on the blueprint!

How to use new in JavaScript?

To use the 'new' operator in JavaScript, you write 'new' followed by the object name, with any required arguments inside parentheses. This will create a fresh copy of the object, with its own set of properties and methods.

var myObject = new Object();

Why do we use new in JavaScript?

The 'new' operator is used when you want to create multiple objects of the same kind, each with their own properties and methods. If you want to create multiple houses with different colors, you can do so easily with the 'new' operator!

Effect of new in JavaScript

When you use the 'new' keyword in JavaScript, you are essentially creating a new object that has access to all of the blueprint's functionality. This allows for code reuse, as you don't need to redefine functionality for each version of an object.

Imagine that you have a machine that makes cookies. Each time you want to make a cookie, you have to do a lot of steps like mixing the dough, cutting it into shape, baking it, and more. But what if you could just tell the machine 'Make me a new cookie!' and it does all the steps for you? That's what the 'new' keyword does in JavaScript. It tells the 'machine' (which could be a function or a class) to create a new object.

Why do we use the new keyword?

Let's say you have a toy factory, and you want to make many teddy bears. It would take a long time if you had to make each teddy bear separately: you have to put the stuffing in, sew the fur, attach the eyes and nose, etc. But if you had a special teddy bear maker machine, you could just say 'I want a new teddy bear' and the machine will put together all the parts for you. In JavaScript, when you want to create many objects that are alike, you can use the 'new' keyword to create new ones without having to do everything from scratch.

How to use the new keyword?

Using the 'new' keyword is like using a magic phrase. You use it before a function that is designed to create an object. For example, if you want a new bike, and you have a function called 'Bike' that knows how to make bikes, you would say 'new Bike()' to get a new bike.

var myBike = new Bike();