Create variables.md

variables.md

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+# Variables In JavaScript
+
+
+We can easily describe variables as containers for storing data.
+
+There are several ways through which we can define variables in javascript; either automatically or by using the var, let or const keywords.
+
+Let us have a look at some examples:
+
+## Automatic Declaration
+In this case, the variables will get declared as variables automatically:
+
+
+```bash
+  //Creating a variable named x and storing the value 20 in it
+  x=20;
+
+  //creating a variable named y and storing the value 30 in it
+  y=30;
+
+  //creating the variable z and storing the sum of variable x and variable y in it
+  z=x+y;
+```
+## Declaration using the var keyword 
+
+In this case we are using the var keyword 
+
+```bash
+  //Creating a variable named myAge using the var keyword and storing the value 27 in it
+
+  var myAge=27;
+```
+
+## Declaration using the let keyword
+
+```bash
+  //Creating a variable named herAge using the let keyword and storing the value 25 in it
+
+  let herAge=25;
+```
+## Declaration using the const keyword
+
+```bash
+  //Creating a variable named myAge, herAge and OurTotalAge and storing the sum of variable herAge and myAge in the variable OurTotalAge 
+
+    const herAge=25;
+    const myAge=27;
+    const OurTotalAge=herAge+myAge;
+
+```
+
+