Javescript Practice Day2 : Static members (variable and functions)

Static variables - to declare a static variable use constructor function name in the declaration of the members and same to invoke as show in the below example


function simpleInterst(tenure)
{
    //public instance variable
    this.t = tenure;
    
   
    //principle and rate will be same so we are creating a static field
    //static members are declared with the constructor function name
    simpleInterst.principle=10000;
    simpleInterst.rate=3;
    
    this.rateOfInterest= function()
    {
           //static members are invoked with the constructor function name
        return (simpleInterst.principle * simpleInterst.rate * this.t)/100;
    }
}


var  year = new simpleInterst(5);
document.write("<p> 5 years </p>"+year.rateOfInterest() + "<br/>");
var  year = new simpleInterst(6);
document.write("<p> 6 years </p>"+year.rateOfInterest() + "<br/>");
var  year = new simpleInterst(10);
document.write("<p> 10 years </p>"+year.rateOfInterest() + "<br/>");



Static Functions/methods - static methods are accessed with the help of constructor function name

function countObject(name)
{
    
    this.name=name;
    countObject.count=++countObject.count|| 1;
    
    
    countObject.getCountObject=function()
    {
        return countObject.count;
    }
}


var obj1= new countObject("obj1");
var obj2= new countObject("obj2");
var obj3= new countObject("obj3");
var obj4= new countObject("obj4");

//static methods are accessed with the help of constructor function name
document.write(countObject.getCountObject()+"<h1> Asscessing a static function with fucntion name</h1>");