Class Constructor in OOP in TypeScript
Let's pass the initial value of the property as a parameter of the class constructor. In this case, the parameter also needs to be given a type:
class User {
name: string = '';
constructor(name: string) {
this.name = name;
}
}
There is a nuance here. Since the property value is assigned in the constructor, the initial value of the property can be omitted and this will not be an error:
class User {
name: string; // do not set the value of constructor(name: string) {
this.name = name;
}
}
Let's now create an object of our class, immediately specifying its name:
let user: User = new User('john');
Let's look at the property of our class:
console.log(user.name); // 'john'
Create a class Employee, into the constructor of which pass the first name, last name, age and salary of the employee.
