var i = 5;
alert(typeof 5);
var j = "sushil";
alert(typeof j);
var k = function(){ m = a+b; }
alert(typeof k);
var f = {};
alert(typeof f);
var b = true;
alert(typeof b);
var m;
alert(typeof m);
// javascript basic datatypes.
// a new line string
var str = "my name is \\ \n sushil";
alert(str);
// comparing strings
var str1 = "sushil";
var str2 = "svshil";
alert(str1>str2);
//confirm and prompt
var e = confirm("are you sure");
alert(e);
var z = prompt("tell me more");
alert(z);
// undefined and null are different in javascript
alert(undefined==null);
alert(undefined===null); //type cohersive comparision
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