// Class definition for Person
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
// Method to generate a greeting
greet() {
return `Hello, my name is ${this.name} and I am ${this.age} years old.`;
}
}
// Usage of the Person class
const person = new Person('John', 30);
const greeting = person.greet();JavaScript Class with Constructor and Method
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Tutorial
javascript
Understanding JavaScript Classes
Getters and setters allow you to define methods that are executed when a property is accessed or modified. This can be useful for validating data or performing side effects.
class Rectangle {
constructor(width, height) {
this.width = width;
this.height = height;
}
get area() {
return this.width * this.height;
}
set width(value) {
if (value <= 0) throw new Error("Width must be positive");
this._width = value;
}
get width() {
return this._width;
}
}
const rect = new Rectangle(10, 5);
console.log(rect.area); // Output: 50
rect.width = 15;
console.log(rect.area); // Output: 75Sep 02, 2024
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