node js module export class
In Node.js, a module is a self-contained unit of code that can be reused and imported into other parts of a program. It helps organize and structure the codebase.
To export a class from a module in Node.js, we use the
module.exports
object. This object is a special object provided by Node.js to define what should be exported from the module.The
class
keyword in JavaScript is used to define a blueprint for creating objects. It allows us to define properties and methods that the objects created from the class will have.To export a class using
module.exports
, we assign the class itself tomodule.exports
. For example, if we have a class namedMyClass
, we would writemodule.exports = MyClass;
.Once a class is exported from a module, it can be imported and used in other parts of the program by using the
require
function. For example, if we want to use the exportedMyClass
, we would writeconst MyClass = require('./myModule');
.By using the exported class, we can create new instances of the class and access its properties and methods. For example, if we have a method named
myMethod
in the exportedMyClass
, we can create a new instance ofMyClass
and callmyMethod
on it like this:const myObject = new MyClass(); myObject.myMethod();
.