JavaScript Program on Data Types and Variables Part – 1

Program 1

// var a=100
// console.log(typeof(a))
// var b="Hello Friends"
// console.log(typeof(b))
// var c=true
// console.log(typeof(c))
// var d=10.40
// console.log(typeof(d))
// var e='z'
// console.log(typeof(z))
// console.log(typeof(e))
//     var a="a with var"
//     var a="Hello Friends how are you"    
// console.log(a)
//   {
//     let a="let variable"
//     console.log("inside block : " +a)
//   }
//      let a="let variable";   
//      console.log("outside block : " +a)
  //console.log("outside block : " +a)
//   {
//       const PI=3.14
//   }
//   console.log("Constant: " + PI)

Program 2

// Rules for Declaring variable in Java Script 

// var _a=100 
// var #a=2300 
// var $a=50 
// var emp no=101 
// var emp_name="vivek" 
// var emp-dept="CSE" 

  //var if=100 
// var empname="Dipesh Sharma" 
// console.log(typeof(empname)) 
// console.log(empname) 
// import readline module