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.

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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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