Merge branch 'Coursework-3' of https://github.com/ausiejute/Module-JavaScript-Fundamentals into Coursework-3

Author: ausiejute

Sprint-3/1-key-errors/1.js

@@ -8,15 +8,14 @@
 
 // Try playing computer with the example to work out what is going on
 
-/*function convertToPercentage(decimalNumber) {
+/* function convertToPercentage(decimalNumber) {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 */
 // =============> write your explanation here
-//
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here

Sprint-3/2-mandatory-debug/0.js

@@ -1,6 +1,7 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// =============>
+// Variables haven't been declared, so it will throw a reference error
 
 function multiply(a, b) {
   console.log(a * b);
@@ -9,6 +10,13 @@ function multiply(a, b) {
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
 // =============> write your explanation here
-
+// It printed 32 because that particular console function is inside the multiply function (local), whereas the other one
+// is outside the scope and when we call the multiply function it comes up as undefined because nothing has been returned
+// inside of it.
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+
+/* function multiply(a, b) {
+  return a * b;
+}
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`); */

Sprint-3/2-mandatory-debug/1.js

@@ -1,13 +1,21 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// it will print the following: `The sum of 10 and 32 is undefined'
 
+/*
 function sum(a, b) {
   return;
   a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+*/
 
 // =============> write your explanation here
+// the function sum doesn't return any value. The arithmetic operation doesn't execute because it's defined after 'return'
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+function sum(a, b) {
+  return a + b;
+}
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);

Sprint-3/2-mandatory-debug/2.js

@@ -2,8 +2,8 @@
 
 // Predict the output of the following code:
 // =============> Write your prediction here
-
-const num = 103;
+// it will not print the correct last digits
+/*const num = 103;
 
 function getLastDigit() {
   return num.toString().slice(-1);
@@ -12,13 +12,29 @@ function getLastDigit() {
 console.log(`The last digit of 42 is ${getLastDigit(42)}`);
 console.log(`The last digit of 105 is ${getLastDigit(105)}`);
 console.log(`The last digit of 806 is ${getLastDigit(806)}`);
+*/
 
 // Now run the code and compare the output to your prediction
 // =============> write the output here
+/* The last digit of 42 is 3
+The last digit of 105 is 3
+The last digit of 806 is 3 
+*/
 // Explain why the output is the way it is
 // =============> write your explanation here
+
+// Because the method uses the num value which is 103.
 // Finally, correct the code to fix the problem
 // =============> write your new code here
 
+function getLastDigit(num) {
+  return num.toString().slice(-1);
+}
+
+console.log(`The last digit of 42 is ${getLastDigit(42)}`);
+console.log(`The last digit of 105 is ${getLastDigit(105)}`);
+console.log(`The last digit of 806 is ${getLastDigit(806)}`);
+
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+// The function getLastDigit wasn't using intended parameters