instance javascript code example
Example 1: javascript class
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
introduction() {
return `My name is ${name} and I am ${age} years old!`;
}
}
let john = new Person("John Smith", 18);
console.log(john.introduction());
Example 2: es6 class example
<script>
class Student {
constructor(rno,fname,lname){
this.rno = rno
this.fname = fname
this.lname = lname
console.log('inside constructor')
}
get fullName(){
console.log('inside getter')
return this.fname + " - "+this.lname
}
}
let s1 = new Student(101,'Sachin','Tendulkar')
console.log(s1)
console.log(s1.fullName)
</script>
Example 3: javascript class static method
class Animal {
sayHello() {
return `${this.constructor.greeting}! I'm ${this.name}!`;
}
}
class Cat extends Animal {
constructor(name) {
super();
this.name = name;
}
static greeting = 'Feed me';
}
class Dog extends Animal {
constructor(name) {
super();
this.name = name;
}
static greeting = 'Sigh';
}
const run = document.getElementById("run");
run.addEventListener('click', () => {
let Garfield = new Cat('Garfield');
let Snoopy = new Dog('Snoopy');
console.log(Garfield.sayHello());
console.log(Snoopy.sayHello());
})
Example 4: javascript classes
let Person = class {
constructor(firstName, lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
}