This document discusses static methods in JavaScript classes. Static methods are called on the class constructor rather than an instance of the class, so the this keyword refers to the class constructor. The document provides examples of defining a static method directly on a class and assigning it after class definition, in both cases this refers to the class constructor. It also demonstrates using a static method to compare class instances by a property rather than operating on an instance.

1. Interesting
Code
JavaScript

2. JavaScript static method of a class
class User {
static staticMethod() {
alert(this === User);
}
}
User.staticMethod(); // true

3. The value of this is the class constructor
class User() { }
User.staticMethod = function() {
alert(this === User);
};
User.staticMethod(); // true

4. JavaScript class Constructor & Static function
class Article {
constructor(title, date) {
this.title = title;
this.date = date; }
static compare(articleA, articleB) {
return articleA.date - articleB.date;
}
}