fixed all the errors and interpreted everything in sprint-2

Author: edwardkganyago45-source

Sprint-2/1-key-exercises/1-count.js

@@ -4,3 +4,4 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+// line 3 is adding 1 to the count variable

Sprint-2/1-key-exercises/2-initials.js

@@ -1,10 +1,11 @@
 const firstName = "Creola";
 const middleName = "Katherine";
 const lastName = "Johnson";
+let initials=firstName.charAt(0)+middleName.charAt(0)+lastName.charAt(0)
 
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-const initials = ``;
-
+ //initials = ``;
+console.log(initials)
 // https://www.google.com/search?q=get+first+character+of+string+mdn

Sprint-2/1-key-exercises/3-paths.js

@@ -17,7 +17,8 @@ console.log(`The base part of ${filePath} is ${base}`);
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
 
-const dir = ;
-const ext = ;
-
+const dir =filePath.slice(13,16) ;
+const ext =filePath.slice(50,53);
+console.log(`the directory of the file path is: ${dir}`)
+console.log(`the extension of the file path is: ${ext}`)
 // https://www.google.com/search?q=slice+mdn

Sprint-2/1-key-exercises/4-random.js

@@ -4,6 +4,12 @@ const maximum = 100;
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 
 // In this exercise, you will need to work out what num represents?
+
 // Try breaking down the expression and using documentation to explain what it means
+//math.floor rounds down the whole number
+//math.random generates a random number between 0 and 1
+//max - min +1 =98
+//add 1
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
+console.log(num)

Sprint-2/2-mandatory-errors/0.js

@@ -1,2 +1,2 @@
-This is just an instruction for the first activity - but it is just for human consumption
-We don't want the computer to run these 2 lines - how can we solve this problem?
+//This is just an instruction for the first activity - but it is just for human consumption
+//We don't want the computer to run these 2 lines - how can we solve this problem?

Sprint-2/2-mandatory-errors/1.js

@@ -1,4 +1,4 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
 age = age + 1;

Sprint-2/2-mandatory-errors/2.js

@@ -1,5 +1,5 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
-
-console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+console.log(`I was born in ${cityOfBirth}`);
+

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

@@ -1,9 +1,14 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+const last4Digits = cardNumber.toString().slice(-4);
+
+//maybe the error isn't running because of the function used to get the last 4 digits
+
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
 // Then run the code and see what error it gives.
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+//it says .slice() is not a fnction, i was right
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+console.log(last4Digits)

Sprint-2/2-mandatory-errors/4.js

@@ -1,2 +1,4 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const Hour12ClockTime = "8:53pm";
+const hour24ClockTime = "20:53";
+
+//cant start variable name with number or special char

Sprint-2/3-mandatory-interpret/1-percentage-change.js

@@ -2,21 +2,22 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
-const priceDifference = carPrice - priceAfterOneYear;
-const percentageChange = (priceDifference / carPrice) * 100;
+const priceDifference = carPrice.toInt() - priceAfterOneYear.toInt();
+const percentageChange = (priceDifference.toInt() / carPrice.toInt()) * 100;
 
 console.log(`The percentage change is ${percentageChange}`);
 
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
-
+//2
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
-
+//maybe the function is doing mathematical operations to string, there wasnt a comma for the second replace function
 // c) Identify all the lines that are variable reassignment statements
-
+//4
 // d) Identify all the lines that are variable declarations
-
+//2
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+//it is removing all the commas and replacing it with an empty space, to make calculations easier