JavaScript: Loops, Scopes, var/let/const

Author: AnkitKumarMishra5

JavaScript/Loops.html

@@ -148,6 +148,16 @@ <h1>Loops</h1>
     //       break
     //   }
     // }
+
+    // Example 4: Find the factorial of the given number
+    // let num1 = Number(prompt('Enter number to find factorial'))
+    // let factorial = 1
+
+    // for(let i = num1; i > 1; i--) {
+    //   factorial = factorial * i
+    // } 
+
+    // console.log(factorial)
   </script>
 </body>
 </html>

JavaScript/Scopes.html

@@ -0,0 +1,94 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Scopes</title>
+</head>
+<body>
+  <h1>Scopes</h1>
+  <script>
+    /*
+      # Scope: Space where a variable can be accessed
+        - Global scope: Variable can be accessed anywhere in the file
+        - Function scope
+        - Block scope ({}): Variable can be accessed within the block
+
+      # Declare variables
+        - var, let, const
+        - ES6: ECMAScript 6 (2015)
+          - let, const (Block scope)
+
+        - var: Variables
+          - Can be re-declared
+          - Can be re-assigned
+          - Function scope
+        - let: Variables
+          - Cannot be re-declared
+          - Can be re-assigned
+          - Block scope
+        - const: Constants
+          - Cannot be re-declared
+          - Cannot be re-assigned
+          - Block scope
+    */
+
+    // var x = 10 // Global scope
+
+    // if(10 > 5) {
+    //   console.log(x)
+    // }
+
+    // console.log(x)
+
+    // var age = 35
+
+    // if(10 > 5) {
+    //   var age = 50
+    //   console.log(age)
+    // }
+
+    // console.log(age)
+    
+    /* ----------------------*/
+    // let student = 'Mark'
+
+    // if(100 > 50) {
+    //   let student = 'Ananya'
+    //   console.log(student)
+    // }
+
+    // console.log(student)
+
+    // var x = 10
+    // x = 100
+    // console.log(x)
+
+    // let x = 10
+    // x = 100
+    // console.log(x)
+
+    // const x = 10
+    // x = 20
+    
+    /* ----------------------*/
+    // var name = 'Mark'
+    // if(true) {
+    //   var name = 'Sonal'
+    // }
+    // console.log(name + name)
+
+    // let name = 'Mark'
+    // if(true) {
+    //   let name = 'Sonal'
+    //   console.log(name + name)
+    // }
+    // console.log(name + name)
+  </script>
+</body>
+</html>
+
+<!--
+  # Future:
+    - Function scope
+-->