From d0c831a6c9513925d2dd71ec8a0b8f32887b3bbd Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 03:48:43 +0100 Subject: [PATCH 01/12] Complete count exercise --- Sprint-2/1-key-exercises/1-count.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js index 117bcb2b6..f04b0a31c 100644 --- a/Sprint-2/1-key-exercises/1-count.js +++ b/Sprint-2/1-key-exercises/1-count.js @@ -3,4 +3,4 @@ let count = 0; 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 adds 1 to the current value of count and assigns the new value back to count. The = is the assignment operator. From 6756ebab933fb3ac9e182be3383616a8c51963c5 Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 03:51:03 +0100 Subject: [PATCH 02/12] Complete initials exercise --- Sprint-2/1-key-exercises/2-initials.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-2/1-key-exercises/2-initials.js b/Sprint-2/1-key-exercises/2-initials.js index 964c9563c..e5e317ec7 100644 --- a/Sprint-2/1-key-exercises/2-initials.js +++ b/Sprint-2/1-key-exercises/2-initials.js @@ -5,6 +5,6 @@ const lastName = "Johnson"; // 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 = ``; +const initials = firstName[0] + middleName[0] + lastName[0]; // https://www.google.com/search?q=get+first+character+of+string+mdn From b86573274ff406bc5460a27f9ce66249c0668146 Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 03:53:13 +0100 Subject: [PATCH 03/12] Complete paths exercise --- Sprint-2/1-key-exercises/3-paths.js | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js index ab90ebb28..d45da5962 100644 --- a/Sprint-2/1-key-exercises/3-paths.js +++ b/Sprint-2/1-key-exercises/3-paths.js @@ -17,7 +17,7 @@ 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(0, lastSlashIndex); +const ext = base.slice(base.lastIndexOf(".") + 1); -// https://www.google.com/search?q=slice+mdn \ No newline at end of file +// https://www.google.com/search?q=slice+mdn From 0ae0a4e5fa79249f5f350dbdaf6018b943023d59 Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 03:55:26 +0100 Subject: [PATCH 04/12] Complete random number exercise --- Sprint-2/1-key-exercises/4-random.js | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Sprint-2/1-key-exercises/4-random.js b/Sprint-2/1-key-exercises/4-random.js index 292f83aab..cf8d9b679 100644 --- a/Sprint-2/1-key-exercises/4-random.js +++ b/Sprint-2/1-key-exercises/4-random.js @@ -7,3 +7,7 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum; // Try breaking down the expression and using documentation to explain what it means // 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 +// num represents a random whole number between 1 and 100 inclusive. +// Math.random() generates a random number from 0 up to, but not including, 1. +// The calculation scales this to the required range, Math.floor() rounds it down, +// and adding minimum makes the range start at 1. From b2a1379a240e4b435b76dd7a5866dc3ae80ea6e0 Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 03:58:19 +0100 Subject: [PATCH 05/12] Complete mandatory errors exercise 0 --- Sprint-2/2-mandatory-errors/0.js | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Sprint-2/2-mandatory-errors/0.js b/Sprint-2/2-mandatory-errors/0.js index cf6c5039f..044add7ac 100644 --- a/Sprint-2/2-mandatory-errors/0.js +++ b/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? \ No newline at end of file +// 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? From 8aed09f16004d352cc3688bfab92423d2ed382af Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 04:01:25 +0100 Subject: [PATCH 06/12] Complete mandatory errors exercise 1 --- Sprint-2/2-mandatory-errors/1.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-2/2-mandatory-errors/1.js b/Sprint-2/2-mandatory-errors/1.js index 7a43cbea7..031839b47 100644 --- a/Sprint-2/2-mandatory-errors/1.js +++ b/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; From c3221378eaf036270196598d63f901b87dc380fb Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 04:03:53 +0100 Subject: [PATCH 07/12] Complete mandatory errors exercise 2 --- Sprint-2/2-mandatory-errors/2.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-2/2-mandatory-errors/2.js b/Sprint-2/2-mandatory-errors/2.js index e09b89831..2865eb8a4 100644 --- a/Sprint-2/2-mandatory-errors/2.js +++ b/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}`); From 3a442dbf1726d0a9003185d465ec5a08b0795070 Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 04:06:32 +0100 Subject: [PATCH 08/12] Complete mandatory errors exercise 3 --- Sprint-2/2-mandatory-errors/3.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-2/2-mandatory-errors/3.js b/Sprint-2/2-mandatory-errors/3.js index ec101884d..15ac01156 100644 --- a/Sprint-2/2-mandatory-errors/3.js +++ b/Sprint-2/2-mandatory-errors/3.js @@ -1,5 +1,5 @@ const cardNumber = 4533787178994213; -const last4Digits = cardNumber.slice(-4); +const last4Digits = cardNumber.toString().slice(-4); // The last4Digits variable should store the last 4 digits of cardNumber // However, the code isn't working From 139aee860de515b20c3201f2e52a37992a2c941a Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 04:08:57 +0100 Subject: [PATCH 09/12] Complete mandatory errors exercise 4 --- Sprint-2/2-mandatory-errors/4.js | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Sprint-2/2-mandatory-errors/4.js b/Sprint-2/2-mandatory-errors/4.js index 5f86c730b..b0feba1bb 100644 --- a/Sprint-2/2-mandatory-errors/4.js +++ b/Sprint-2/2-mandatory-errors/4.js @@ -1,2 +1,2 @@ -const 12HourClockTime = "8:53pm"; -const 24hourClockTime = "20:53"; +const twelveHourClockTime = "8:53pm"; +const twentyFourHourClockTime = "20:53"; From feadfb21c8fa57485f56cdb4b95da43b0ba2aacf Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 04:19:17 +0100 Subject: [PATCH 10/12] Complete percentage change interpret exercise --- .../3-mandatory-interpret/1-percentage-change.js | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/Sprint-2/3-mandatory-interpret/1-percentage-change.js b/Sprint-2/3-mandatory-interpret/1-percentage-change.js index e24ecb8e1..6a50b4b56 100644 --- a/Sprint-2/3-mandatory-interpret/1-percentage-change.js +++ b/Sprint-2/3-mandatory-interpret/1-percentage-change.js @@ -2,7 +2,7 @@ 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; @@ -12,11 +12,21 @@ 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 +// Answer: There are 5 function calls. +// Line 4: carPrice.replaceAll() and Number() +// Line 5: priceAfterOneYear.replaceAll() and Number() +// Line 10: console.log() // 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? +// Answer: The error was on line 5 because a comma was missing between the two arguments +// passed to replaceAll(). Adding the missing comma fixes the error. // c) Identify all the lines that are variable reassignment statements +// Answer: Lines 4 and 5 are variable reassignment statements. // d) Identify all the lines that are variable declarations +// Answer: Lines 1, 2, 7 and 8 are variable declarations. // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression? +// Answer: It removes all commas from the carPrice string and converts the result into a number. +// This allows carPrice to be used in mathematical calculations. From 23c71b9b5a1b85d7bb37e64e787a628adb38631f Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 04:25:21 +0100 Subject: [PATCH 11/12] Complete time format interpret exercise --- Sprint-2/3-mandatory-interpret/2-time-format.js | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Sprint-2/3-mandatory-interpret/2-time-format.js b/Sprint-2/3-mandatory-interpret/2-time-format.js index 47d239558..3743d7969 100644 --- a/Sprint-2/3-mandatory-interpret/2-time-format.js +++ b/Sprint-2/3-mandatory-interpret/2-time-format.js @@ -12,14 +12,24 @@ console.log(result); // For the piece of code above, read the code and then answer the following questions // a) How many variable declarations are there in this program? +// Answer: There are 6 variable declarations. // b) How many function calls are there? +// Answer: There is 1 function call: console.log(result). // c) Using documentation, explain what the expression movieLength % 60 represents // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators +// Answer: movieLength % 60 gives the remainder after dividing movieLength by 60. +// This represents the remaining seconds after converting the time into whole minutes. // d) Interpret line 4, what does the expression assigned to totalMinutes mean? +// Answer: It subtracts the remaining seconds from movieLength and divides by 60. +// This gives the total number of whole minutes in the movie. // e) What do you think the variable result represents? Can you think of a better name for this variable? +// Answer: result represents the movie length formatted as hours, minutes and seconds. +// A better variable name would be formattedMovieLength. // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer +// Answer: No, it will not format all values correctly. +// For example, single-digit minutes or seconds will not have a leading zero. From 770d48eceb2632d4ee74c3834d017c9717304dfd Mon Sep 17 00:00:00 2001 From: Rhoda Ajiroba Date: Tue, 22 Sep 2026 04:31:46 +0100 Subject: [PATCH 12/12] Complete to pounds interpret exercise --- Sprint-2/3-mandatory-interpret/3-to-pounds.js | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/Sprint-2/3-mandatory-interpret/3-to-pounds.js b/Sprint-2/3-mandatory-interpret/3-to-pounds.js index 60c9ace69..cf00af506 100644 --- a/Sprint-2/3-mandatory-interpret/3-to-pounds.js +++ b/Sprint-2/3-mandatory-interpret/3-to-pounds.js @@ -2,13 +2,13 @@ const penceString = "399p"; const penceStringWithoutTrailingP = penceString.substring( 0, - penceString.length - 1 + penceString.length - 1, ); const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0"); const pounds = paddedPenceNumberString.substring( 0, - paddedPenceNumberString.length - 2 + paddedPenceNumberString.length - 2, ); const pence = paddedPenceNumberString @@ -25,3 +25,8 @@ console.log(`£${pounds}.${pence}`); // To begin, we can start with // 1. const penceString = "399p": initialises a string variable with the value "399p" +// 2. Removes the trailing "p" from penceString, changing "399p" to "399". +// 3. Pads the pence string with leading zeros so it has at least 3 characters. +// 4. Extracts all digits except the last two to get the pounds part of the price. +// 5. Extracts the last two digits to get the pence part and ensures it has two digits. +// 6. Formats the pounds and pence as a price and prints it to the console.