console.log("Hello, World!");
//dynamic properties
/*let value1= 10;
console.log(typeof(value1));  //number
let str="dinesh";                
console.log(typeof(str)); //string
let bool =true;
console.log(typeof(bool)); //Boolean
let define;
console.log(typeof(define));//undefined
let nullFine=null;
console.log(nullFine);     //null

let objectValue= { name:"dineshkumar" };
console.log(typeof(objectValue)); //referencr type is object.

let array = ['red','green','blue'];
console.log(array instanceof Array); //Array

let a=10;
let b=a;             //coping the value
b=20;           
console.log(a);
console.log(b);

let x = {name:'dinesh'};
let y = x             //coping th object value
y.name = 'david';
console.log(x.name);
console.log(y.name);

const arrayValue = ["dinesh","alan", "nowsik","benwin"];
const copyValue =[];
for(let i=0;i<arrayValue.length;i++){
  copyValue[i] = arrayValue[i];         //coping the array value1
}
console.log(copyValue);

const higherValue = (value1,value2,value3) =>{ // parameter passing
  let largeValue;
  if(value1 > value2 && value1 > value3){
    largeValue = value1;
  }
  else if(value2 > value1 && value2  > value3 ){
    largeValue = value2;
  }
  else{
    largeValue= value3;
  }
  return largeValue;
}
console.log(higherValue(4,50,6));


 function sumAll() {
  let sum=0;
  let inc;
  for(inc=0;inc<arguments.length;inc++) //arguments passing 
  {
    sum += arguments[inc];    
  }
  return sum;
  
}
console.log(sumAll(1,2,3,4,5,6,7,8,9));

function buildUrl(){
  let qs = "the value";
  with(location)            //with statement
  {
  let url = href + qs;   
  }
  return url;
}
console.log(buildUrl());
*/
const handlingBlock = () => {  //try-catch block
  let x=2;
try{
  x=x+y;
}
catch(err){
 console.log(err);  
}
}
handlingBlock();

if(true){
  var color ="red";
}
console.log(color);

for(var i=0;i < 10; i++){
// doSomething(i);
}
console.log(i);    //no Block level scope with var

var a=10;    //global variable
function functionA(){    //functionA Execution context
  console.log("aFunction");
  function functionB(){
    console.log("bFunction");
  }
  functionB();     //functionB Execution context
  
}
functionA();
console.log(a); //Global execution context