JAVASCRIPT

js class static

class myClass{
 
constructor(){
this.myLocaleVariable=1;//this.varname in the constructer function makes a locale var
}
localfunction(){
return "im local unique to this variable";
}
static publicfunction(){
return "i can be called without an obj"
}
  
}
myClass.myPublicVariable = 0;



myClass.localfunction();//error
myClass.publicfunction();//"i can be called without an obj"
myClass.myLocaleVariable;//error
myClass.myPublicVariable;//0
var obj = new myClass;
obj.localfunction();//"im local unique to this variable"
obj.publicfunction();//error
obj.myLocaleVariable;//1
obj.myPublicVariable;//error

javascript class static fields

class ClassWithInstanceField {
  instanceField = 'instance field'
}

class ClassWithStaticField {
  static staticField = 'static field'
}

javascript static variable in class

class Thing {
  static type = 'thing';
  static myType() {
    return `This class has a type of ${this.type}`;
  }
}
console.log(Thing.type);
//=> 'thing'
console.log(Thing.myType());
//=> 'This class has a type of thing'

// Instances do not inherit static fields and methods
const t = new Thing();
console.log(t.type);
//=> undefined
console.log(t.myType())
//=> Uncaught TypeError: t.myType is not a function 

get static methods of class javascript

class Hi {
	constructor() {
      console.log("hi");
    }
   	my_method(){}
  	static my_static_method() {}
}

function getStaticMethods(cl) {
  return Object.getOwnPropertyNames(cl)
}

console.log(getStaticMethods(Hi))
// => [ 'length', 'prototype', 'my_static_method', 'name' ]

javascript static class variable

class ClassWithStaticMethod {
  static staticProperty = 'someValue';
  static staticMethod() {
    return 'static method has been called.';
  }
  static {
    console.log('Class static initialization block called');
  }
}

console.log(ClassWithStaticMethod.staticProperty);
// output: "someValue"
console.log(ClassWithStaticMethod.staticMethod());
// output: "static method has been called."

//------------------syntex-------------------------

static methodName() { /* ... */ }
static propertyName [= value];

// Class static initialization block
static {

}

js class static

class ClassWithStaticMethod {
  static staticMethod() {
    return 'static method has been called.';
  }
}

console.log(ClassWithStaticMethod.staticMethod());
// expected output: "static method has been called."

static in class javascript

// static in class javascript
// Static class methods are defined on the class itself.
// You cannot call a static method on an object, only on an object class.
class Car {
  constructor(name) {
    this.name = name;
  }
  static hello() {
    return "Hello!!";
  }
}

let 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.