TypeScript Classes - School4Tech

TypeScript have object-oriented programming features like object, classes, interfaces, etc.
class consist of member variable and member function.

Below is code example:

class Greet { // creating class

    message = "hello world"; // member variable

    doGreet() { // member function
        console.log(this.message)
    }

}

let greetObj = new Greet(); // creating Greet class object
greetObj.doGreet(); // calling class member function which is "doGreet"

class Greet { // creating class

message = "hello world"; // member variable

doGreet() { // member function

console.log(this.message)

}

let greetObj = new Greet(); // creating Greet class object

greetObj.doGreet(); // calling class member function which is "doGreet"

In above example, whenever new keyword is used , it invoke the constructor and create new object for Greet.

A constructor is a special function of the class that is responsible for initialising the variables of the class. in above example, it will initialise message with string “hello world”.

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