restructuring

02_Day/02_day_data_types.md

@@ -4,7 +4,7 @@
 [<< Day 1](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/readMe.md) | [Day 3 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/03_Day/03_booleans_operators_date.md)
 --
 
-![Thirty Days Of JavaScript](./day_1_2.png)
+![Thirty Days Of JavaScript](../images/banners/day_1_2.png)
 
 - [📔 Day 2](#%f0%9f%93%94-day-2)
   - [Data types](#data-types)

03_Day/03_booleans_operators_date.md

@@ -3,7 +3,7 @@
 [<< Day 2](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/02_Day/02_day_data_types.md) | [Day 4 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/04_Day/04_day_conditionals.md)
 --
 
-![Thirty Days Of JavaScript](./day_1_3.png)
+![Thirty Days Of JavaScript](../images/banners/day_1_3.png)
 
 - [📔 Day 3](#%f0%9f%93%94-day-3)
   - [Booleans](#booleans)

04_Day/04_day_conditionals.md

@@ -3,7 +3,7 @@
 [<< Day 3](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/03_Day/03_booleans_operators_date.md) | [Day 5 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/05_Day/05_day_arrays.md)
 --
 
-![Thirty Days Of JavaScript](./day_1_4.png)
+![Thirty Days Of JavaScript](../images/banners/day_1_4.png)
 
 - [📔 Day 4](#%f0%9f%93%94-day-4)
   - [Conditionals](#conditionals)
@@ -193,9 +193,11 @@ switch (weather) {
   default:
     console.log(' No need for rain coat.')
 }
+
 // Switch More Examples
-var dayUserInput = prompt('What day is today ?')
-var day = dayUserInput.toLowerCase()
+let dayUserInput = prompt('What day is today ?')
+let day = dayUserInput.toLowerCase()
+
 switch (day) {
   case 'monday':
     console.log('Today is Monday')
@@ -218,10 +220,10 @@ switch (day) {
   case 'sunday':
     console.log('Today is Sunday')
     break
-
   default:
     console.log('It is not a week day.')
 }
+
 ```
 
 ### Ternary Operators

05_Day/05_day_arrays.md

@@ -167,6 +167,7 @@ console.log(lastFruit) // lemon
 
 let lastIndex = fruits.length - 1
 lastFruit = fruits[lastIndex]
+
 console.log(lastFruit)  // lemon
 ```
 
@@ -328,9 +329,9 @@ console.log(thirdList) // [1, 2, 3, 4, 5, 6]
 ```
 
 ```js
-const fruits = ['banana', 'orange', 'mango', 'lemon'] // array of fruits
+const fruits = ['banana', 'orange', 'mango', 'lemon']                 // array of fruits
 const vegetables = ['Tomato', 'Potato', 'Cabbage', 'Onion', 'Carrot'] // array of vegetables
-const fruitsAndVegetables = fruits.concat(vegetables) // concatinate the two arrays
+const fruitsAndVegetables = fruits.concat(vegetables)                 // concatenate the two arrays
 
 console.log(fruitsAndVegetables)
 ```
@@ -382,7 +383,7 @@ if(index != -1){
 index != -1 ? console.log('This fruit does exist in the array'): console.log('This fruit does not exist in the array')
 
 // let us check if a avocado exist in the array
-let indexOfAvocado = fruits.indexOf('avocado')  // -1
+let indexOfAvocado = fruits.indexOf('avocado')  // -1, if the element not found index is -1
 if(indexOfAvocado!= -1){
    console.log('This fruit does exist in the array')  
 } else {