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JavaScript Static Methods


Static class methods are defined on the class itself.
You cannot call a static method on an object, only on an object class.



Example

class Car {  constructor(name) {    this.name =
name; 
}  static hello() {    return "Hello!!"; 
}}const myCar = new Car("Ford");// You can call 'hello()' on
the Car Class:document.getElementById("demo").innerHTML
= Car.hello();// But NOT on a Car Object:// document.getElementById("demo").innerHTML
= myCar.hello();// this will raise an error.

Try it Yourself »


If you want to use the myCar object inside the static method, you can send it
as a parameter:

Example

class Car {  constructor(name) {    this.name =
name; 
}  static hello(x) {    return "Hello " +
x.name; 
}}const myCar = new Car("Ford");document.getElementById("demo").innerHTML
= Car.hello(myCar);

Try it Yourself »















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Reference: https://www.w3schools.com/js/js_class_static.asp