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Program 1
<html>
<head>
<title>typeof and instance of operator</title>
<script type="text/javascript">
/*
JavaScript Data Type
number
boolean
bigint
string
symbol
null
undefined
*/
let a=123
let b=123.45
let c=1234n
let d=true
let e="Hello"
document.writeln("<center>")
document.writeln("<h2>")
// document.writeln(typeof a)
// document.writeln("<br>"+typeof b)
// document.writeln("<br>"+typeof c)
// document.writeln("<br>"+typeof d)
// document.writeln("<br>"+typeof e)
// document.writeln("<br>"+typeof null)
// document.writeln("<br>"+typeof Symbol())
// document.writeln("<br>"+typeof undefined)
// document.writeln("<br>"+null===undefined)
// document.writeln("<br>"+typeof (10+10)) //NUMBER
// document.writeln("<br>"+typeof (10+"10")) //STRING
// document.writeln("<br>"+typeof ("10"+"10")) //STRING
// document.writeln("<br>"+typeof (10+true))
// document.writeln("<br>"+typeof (true+false))
// document.writeln("<br>"+typeof (10+12.44))
// document.writeln("<br>"+typeof ("10"-"10"))
// let ar=new Array([10,20,30,40] )
// document.writeln("<br>"+typeof (ar))
// function display()
// {
// document.writeln("Hello")
// }
// document.writeln("<br>"+typeof (display))
const myset=new Set(["Indore","Pune","Bhopal","Delhi","Ujjain",123,true,12.55])
document.writeln(myset instanceof Set)
let s=new String("Hello Friends")
document.writeln(s instanceof Set)
//document.writeln("<br>"+typeof (myset))
document.writeln("</h2>")
document.writeln("</center>")
</script>
</head>
<body>
<center>
</center>
</body>
</html>
