dataType file is added

Wcoder547 · Wcoder547 · commit cb57aad5bb45 · 2024-05-06T01:07:02.000+05:00
diff --git a/01_basics/dataTypes.js b/01_basics/dataTypes.js
@@ -0,0 +1,43 @@
+let name = "waseem akram";
+let age = 20;
+let isMarried = false;
+let university;
+let bankBalance = null; //give us null which is datatype
+bankBalance = ""; //it will give us empty in console
+let answer = 42;
+answer = "Thanks for submeting"; // it will print ..because js is dynamically typed language so it datatype
+//will automaticly convert during execution..
+/* In expressions involving numeric and string values with the + operator, JavaScript converts numeric values to strings.*/
+let x, y, z;
+x = "the answer is " + 42; // this will convert into string
+y = 42 + " is my answer"; //it will also combine with string and become string
+z = "37" + 7; // string + number=> string so the output will be 377
+let u, v, s;
+u = 7 - "37"; //string -number=number =>37-7=30 or number-string=number same..
+v = "37" * 7; //string* number =number => 37*7=259
+s = "37" / 7; //string /number=number =>37/7=5.28
+console.table([u, v, s]);
+
+// console.log([typeof name, typeof age, typeof isMarried, typeof university]);
+
+//premitive data types 7
+//Number => range i think 2 the power of 64
+//bigInt => use for big values which will used in transactions,account balance and crypto..
+//string => in the form of ""
+// boolean which is simply in true or false
+// undefined variable which is not defined just like above university..it is decalred but not defined.
+//symbol => unique,immutable which cannot be chnaged.
+// null which is single value mean it's empty .. null is object .you can check it through type of .
+
+//Objects
+// const portfolio = {
+//   name: "waseem akram",
+//   skill: "javascript developer",
+//   degree: "BSIT",
+// };
+
+// console.log(portfolio.name); //waseem akram
+// console.log(portfolio.skill); //javascript developer
+// console.log(bankBalance);
+// console.log(answer);
+// console.table([x, y, z]);
