Classes
Lesson 7 of 9 in Coddy's Tricky parts of Modern Javascript (ES6+) course.
A class is a template for creating objects
Use the keyword class to create a class.
class can have a special method with name constructor to initialize the object variables.
constructor method is executed when an object is created from class using new keyword. ex. const person = new Person("Coddy");
class Employee {
constructor(name, id) { //constructor
this.name = name;
this.id = id;
}
work(){ // a class method
console.log("Employee works");
}
}Observe above example , class Employee is a template of object which will have two properties (variables) i.e. name, id and a method named work.
const employee1 = new Employee("John Doe", 10001) ; // provide values of name & id in constructor
console.log(employee1.name) // John Doe - access variables
employee1.work() // "Employee works" - access methods
Challenge
EasyCreate a class Person which will have name and age properties and update and print methods.
The update method should take name and age parameters and should update the class properties name & age.
The print method should print the values of name and age in the format : "Person name: <name>, age: <age>" where <name> and <age> are the values of name and age.
Ex. "Person name: Shubham, age: 25"
Don't forget the constructor to initialize the properties
Try it yourself