javascript class static function code example

Example 1: js class static function

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

Example 2: js class static

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

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

Example 3: 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' ]