datatype

Author: ghosh-triyas

01_basics/01_datatypes.js

@@ -0,0 +1,26 @@
+// to treat all the old javascript codes essence according to the newer version use "strict"
+"use strict";
+
+// alert(3+3) does not print 6 as this is nodejs. in brower's console if we write alert(6+6) it create brower's window object by executing alert function call in brower's js environment V8. then the dialog box is created and shows 12 and on pressing "ok" it closes.
+
+console.log(6+6) //in node js it happens in this way
+
+// Different datatypes :
+// number => range is upto 2^53
+// bigint => range more than number. generally used in big data or stock market.
+// boolean 
+// string => represented in ""
+// null => an object to represnet empty values
+// undefined => represents no value in uninitialized variable
+
+// object
+
+// typeof gives the type of object
+
+console.log(typeof "hello");
+
+let num = 2^53 +1
+
+console.log(typeof num);
+
+