Js core3/week3/denis p

week-3/Homework/mandatory/1-practice/2-code-reading.md

@@ -15,6 +15,9 @@ Take a look at the following code:
 
 Explain why line 4 and line 6 output different numbers.
 
+They output different numbers because the scopes of the x variable are different.
+
+
 ## Question 2
 
 Take a look at the following code:
@@ -34,7 +37,9 @@ console.log(y)
 
 What will be the output of this code. Explain your answer in 50 words or less.
 
-## Question 3
+The output of this code will be 10 and undefined. The x variable have a global scope which means can be accessed inside other scopes. The y variable it's defined inside a functions scope and we are trying to display it outside of the function( where it's scope is not recognised).
+
+## Question 3 
 
 Take a look at the following code:
 
@@ -61,3 +66,7 @@ console.log(y);
 ```
 
 What will be the output of this code. Explain your answer in 50 words or less.
+
+The output of the code will be x = 9 and y = 10. 
+X is a integer const and cannot be changed. 
+Y is a const object but we can change the value of the x inside. If we try to reasign the y object then this will throw an error.

week-3/Homework/mandatory/2-exercises/exercise-1/exercise-1.js

@@ -4,8 +4,10 @@ const personOne = {
     favouriteFood: 'Spinach'
 }
 
-function introduceYourself(___________________________) {
+const {name, age, favouriteFood} = personOne; //answer to question 1
+
+function introduceYourself({name, age, favouriteFood}) {
     console.log (`Hello, my name is ${name}. I am ${age} years old and my favourite food is ${favouriteFood}.`); 
 }
 
-introduceYourself(personOne);
+introduceYourself(personOne); 

week-3/Homework/mandatory/2-exercises/exercise-2/exercise-2.js

@@ -9,3 +9,14 @@ let hogwarts = [
     { firstName: "Minerva", lastName: "McGonagall", house: "Gryffindor", pet: null, occupation: "Teacher" },
     { firstName: "Albus", lastName: "Dumbledore", house: "Gryffindor", pet: "Phoenix", occupation: "Teacher" }
 ]
+
+
+
+
+hogwarts.forEach(({firstName, lastName, house}) => {
+    house === 'Gryffindor' ? console.log(`${firstName} ${lastName}`) : '';
+})
+
+hogwarts.forEach(({firstName, lastName, pet, occupation}) => {
+    pet && occupation === 'Teacher' ? console.log(`${firstName} ${lastName}`) : '';
+})

week-3/Homework/mandatory/2-exercises/exercise-3/exercise-3.js

@@ -6,4 +6,13 @@
      { itemName: "Hot Coffee", quantity: 2, unitPrice: 1.00},
      { itemName: "Hash Brown", quantity: 4, unitPrice: 0.40}
  ]
-
+
+ let totalPrice = 0;
+
+ console.log(`QTY  ITEM          TOTAL`);
+ order.forEach(({itemName, quantity, unitPrice}) => {
+     console.log(`${quantity}    ${itemName}     ${unitPrice}`);
+    totalPrice += unitPrice;
+ })
+
+ console.log(`Total: ${totalPrice}`);