I am essentially creating singleton classes with javascript, which look like this

const ClassExample = function(input){
    const _myInput= input;
    this.myFunc = function(){
        return _myInput;
    }       
}

I can call the above like this

const myClass = new ClassExample("hello");
console.log(myClass.myFunc());

How can I add another function which I can call without initiating the ‘class’

This is what I’d like to do

const ClassExample = function(input){
    const _myInput= input;
    this.myFunc = function(){
        return _myInput;
    }
    this.myStatic = function(){
        return "my static";
    }       
    //static myStatic = function()....  does not work, probably because it's syntax magic that works with the type class
}

console.log(ClassExample.myStatic());

Is what I want to do achievable like this?