JS Tutorials
JS Introduction
JS Syntax
JS Comments
JS Variables
JS Operators
JS Data Types
JS Functions
JS Objects
JS Numbers
JS Arrays
JS Array Methods
JS Booleans
JS Events
JS Strings
JS Dates
JS Maths
JS Objects
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Object Methods
Object Display
Object Prototypes
Object Iterables
Object Sets
Object Maps
Object References
JS Functions
Function Definition
Function Parameters
Function Invocation
Function Call
Function Apply
Function ClosuresJS Classes
Class Intro
Class Inhertitance
Class Static
JS Async
JS Callbacks
JS Aysnchronous
JS Prmosies
JS ASync/Await
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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!!";
}
}
let myCar = new Car("Ford");
// You can calll '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.
constructor(name) {
this.name = name;
}
static hello() {
return "Hello!!";
}
}
let myCar = new Car("Ford");
// You can calll '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.
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;
}
}
let myCar = new Car("Ford");
document.getElementById("demo").innerHTML = Car.hello(myCar);
constructor(name) {
this.name = name;
}
static hello(x) {
return "Hello " + x.name;
}
}
let myCar = new Car("Ford");
document.getElementById("demo").innerHTML = Car.hello(myCar);