JavaScript super keyword 🦸‍♂️

Javascript super keyword tutorial example explained

#javascript #super #keyword

// ********* index.js *********

// super = Reference to the parent class (super class)
// Very similar to “this” keyword
// Can use a super classes: constructor, methods

class Person{

constructor(name, age){
this.name = name;
this.age = age;
}
welcome(){
console.log(“Hello”,this.name);
console.log(“You are”,this.age,”years old”);
}
}

class Student extends Person{

constructor(name, age, gpa){
super(name, age);
this.gpa = gpa;
}
hello(){
super.welcome();
console.log(“Your gpa is”,this.gpa);
}
}

class Teacher extends Person{

constructor(name, age, classSize){
super(name, age);
this.classSize = classSize;
}
hello(){
super.welcome();
console.log(“Your class size is”,this.classSize);
}
}

let student = new Student(“Steve”, 21, 2.0);
let teacher = new Teacher(“Bob”, 45, 30);

//console.log(student.name);
//console.log(student.age);
//console.log(student.gpa);

//console.log(teacher.name);
//console.log(teacher.age);
//console.log(teacher.classSize);

student.hello();
teacher.hello();