From c97a1ab20137157ec215f0cfbce48e680f57f53e Mon Sep 17 00:00:00 2001 From: John Robinson Date: Mon, 22 Jun 2026 22:23:50 +0100 Subject: [PATCH 1/7] Refactor count.js to clarify variable update and implement initials extraction in initials.js --- Sprint-1/1-key-exercises/1-count.js | 5 +++++ Sprint-1/1-key-exercises/2-initials.js | 4 ++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js index 117bcb2b6e..a5c2333cff 100644 --- a/Sprint-1/1-key-exercises/1-count.js +++ b/Sprint-1/1-key-exercises/1-count.js @@ -4,3 +4,8 @@ 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 + +// Answer: Line 3 is updating the value of the variable 'count' by adding 1 to its current value. +// The = operator is used to update / assign a new value to the variable 'count'. +// It takes the current value of 'count', adds 1 to it, and then assigns that new value back to 'count'. +// diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js index 47561f6175..0a1e1535c0 100644 --- a/Sprint-1/1-key-exercises/2-initials.js +++ b/Sprint-1/1-key-exercises/2-initials.js @@ -5,7 +5,7 @@ let 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. -let initials = ``; - +let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`; +console.log(initials); // https://www.google.com/search?q=get+first+character+of+string+mdn From bd033635a80e0a22ad7fccd34c3c093b0c50b44a Mon Sep 17 00:00:00 2001 From: John Robinson Date: Tue, 23 Jun 2026 00:05:45 +0100 Subject: [PATCH 2/7] Update initials.js to comment out console.log, implement dir and ext variables in paths.js, enhance random.js with detailed explanation, and fix variable declaration issues in mandatory-errors files. --- Sprint-1/1-key-exercises/2-initials.js | 3 ++- Sprint-1/1-key-exercises/3-paths.js | 4 ++-- Sprint-1/1-key-exercises/4-random.js | 6 ++++++ Sprint-1/2-mandatory-errors/0.js | 4 ++-- Sprint-1/2-mandatory-errors/1.js | 2 +- Sprint-1/2-mandatory-errors/2.js | 3 +-- Sprint-1/2-mandatory-errors/3.js | 8 +++++++- Sprint-1/2-mandatory-errors/4.js | 2 +- 8 files changed, 22 insertions(+), 10 deletions(-) diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js index 0a1e1535c0..f0a1dc0e11 100644 --- a/Sprint-1/1-key-exercises/2-initials.js +++ b/Sprint-1/1-key-exercises/2-initials.js @@ -6,6 +6,7 @@ let lastName = "Johnson"; // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution. let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`; -console.log(initials); +// console.log(initials); + // https://www.google.com/search?q=get+first+character+of+string+mdn diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js index ab90ebb28e..b96e4cd6a5 100644 --- a/Sprint-1/1-key-exercises/3-paths.js +++ b/Sprint-1/1-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 diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js index 292f83aabb..5bcabc4ee2 100644 --- a/Sprint-1/1-key-exercises/4-random.js +++ b/Sprint-1/1-key-exercises/4-random.js @@ -7,3 +7,9 @@ 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 + +// Answer: The variable we have created 'num' generates a random number, this is done by using the Math.random() function +// The Math.Random is a built-in function that creates a random number between 0 and 1, but not including 1. The next part +// of the expression multiplies the random number by (100 - 1 + 1) which is 100, this means that the random number will be between 0 and 100. +// Then +1 minimum is added to the random number, this means that the random number will be between 1 and 100. Finally, the Math.floor() +// function is used to round the random number down to the nearest whole number. diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js index cf6c5039f7..65ad3030d6 100644 --- a/Sprint-1/2-mandatory-errors/0.js +++ b/Sprint-1/2-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? \ No newline at end of file diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js index 7a43cbea76..031839b47d 100644 --- a/Sprint-1/2-mandatory-errors/1.js +++ b/Sprint-1/2-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; diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js index e09b89831d..a05375657b 100644 --- a/Sprint-1/2-mandatory-errors/2.js +++ b/Sprint-1/2-mandatory-errors/2.js @@ -1,5 +1,4 @@ // 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}`); \ No newline at end of file diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js index ec101884db..73445fe93f 100644 --- a/Sprint-1/2-mandatory-errors/3.js +++ b/Sprint-1/2-mandatory-errors/3.js @@ -1,5 +1,11 @@ const cardNumber = 4533787178994213; -const last4Digits = cardNumber.slice(-4); +const last4Digits = cardNumber.toString().slice(-4); + +console.log(last4Digits); + +//The const Last4Digits should store the last 4 characters of the cardNumber and return it + +//The Built in method slice() doesnt work on numbers, only on strings. // The last4Digits variable should store the last 4 digits of cardNumber // However, the code isn't working diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js index 5f86c730bc..ba7d672125 100644 --- a/Sprint-1/2-mandatory-errors/4.js +++ b/Sprint-1/2-mandatory-errors/4.js @@ -1,2 +1,2 @@ -const 12HourClockTime = "8:53pm"; +const 12HourClockTime = "8:53"; const 24hourClockTime = "20:53"; From 460983734ab266c8d5a582c6e082bbe0bd4e19a3 Mon Sep 17 00:00:00 2001 From: John Robinson Date: Tue, 23 Jun 2026 00:43:50 +0100 Subject: [PATCH 3/7] Fix typo in replaceAll function call and update comments for clarity in percentage-change.js --- Sprint-1/3-mandatory-interpret/1-percentage-change.js | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js index e24ecb8e18..cd114a797d 100644 --- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js +++ b/Sprint-1/3-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 +12,16 @@ 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 +// A) 5 in total - lines 4, 5, 10 // 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? +// A) Missing comma in line 5 in function .replaceAll which is causing the error. // c) Identify all the lines that are variable reassignment statements +// A) lines 4 and 5 are variable reassignment statements. // d) Identify all the lines that are variable declarations +// A) Lines 1, 2, 7 and 8 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression? +// A) The expression is converting the string value of carPrice into a number and removing the commas so that it can be used in a mathematical calculation. \ No newline at end of file From daaaec93291e115d44cd805be977638d01172e37 Mon Sep 17 00:00:00 2001 From: John Robinson Date: Tue, 23 Jun 2026 01:12:02 +0100 Subject: [PATCH 4/7] Enhance comments in 2-time-format.js for clarity and detail --- Sprint-1/3-mandatory-interpret/2-time-format.js | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js index 47d2395587..daee9398ab 100644 --- a/Sprint-1/3-mandatory-interpret/2-time-format.js +++ b/Sprint-1/3-mandatory-interpret/2-time-format.js @@ -12,14 +12,20 @@ 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? +// A) 6 // b) How many function calls are there? +// A) 1 (console.log function) // c) Using documentation, explain what the expression movieLength % 60 represents // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators +// A) This expression is using the modulo operator that finds the remainder of the movieLength after being divided by 60. // d) Interpret line 4, what does the expression assigned to totalMinutes mean? +// A) The expression is calculating the total number of minutes in the movie (not including the remaining seconds). // e) What do you think the variable result represents? Can you think of a better name for this variable? +// A) The variable gives the total length of the movie in hours, minutes, and seconds. A better name for this variable could be "formattedMovieLength". // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer +// A) The code would have an error if the user was to inputs a value with commas, letters or as a string. \ No newline at end of file From 2721e61301f385747462d5ae99c3d9b0f2f975b6 Mon Sep 17 00:00:00 2001 From: John Robinson Date: Tue, 23 Jun 2026 09:14:01 +0100 Subject: [PATCH 5/7] Enhance comments in 3-to-pounds.js for detailed step-by-step explanation --- Sprint-1/3-mandatory-interpret/3-to-pounds.js | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js index 60c9ace69a..5f2268579d 100644 --- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js +++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js @@ -25,3 +25,11 @@ console.log(`£${pounds}.${pence}`); // To begin, we can start with // 1. const penceString = "399p": initialises a string variable with the value "399p" +// 2. Line 3: uses the substring method to remove the "p" from the end of the string +// 3. Line 8: the variable paddedPenceNumberString is used to ensure that the string has at least 3 characters, +// if not it will add a zero to the start of the string +// 4. Line 9 - 11: the variable pounds uses the substring method in the same way as line 3 but this time removes the last two characters +// the result is now stored in the const 'pounds' to be used in the final output +// 5. Line 14 - 16: the variable pence also uses the substring method to extract the last two characters from paddedPenceNumberString +// the result is now stored in the const 'pence' to be used in the final output, a '0' is added to the end of the string if there is only one character +// 6. Line 18: the console.log function prints our output - the values stored in the consts 'pounds' and 'pence'. \ No newline at end of file From ccdaaa73a2416e171360960ab6ffbba72234f10e Mon Sep 17 00:00:00 2001 From: John Robinson Date: Tue, 23 Jun 2026 17:01:12 +0100 Subject: [PATCH 6/7] Update 12HourClockTime format to include AM/PM designation --- Sprint-1/2-mandatory-errors/4.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js index ba7d672125..d29740f2ed 100644 --- a/Sprint-1/2-mandatory-errors/4.js +++ b/Sprint-1/2-mandatory-errors/4.js @@ -1,2 +1,2 @@ -const 12HourClockTime = "8:53"; +const 12HourClockTime = "8:53 pm"; const 24hourClockTime = "20:53"; From 0823433d53ea4af1351599d61901208297207650 Mon Sep 17 00:00:00 2001 From: John Robinson Date: Wed, 24 Jun 2026 00:13:40 +0100 Subject: [PATCH 7/7] Fix variable naming for consistency in 4.js --- Sprint-1/2-mandatory-errors/4.js | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js index d29740f2ed..2228f43707 100644 --- a/Sprint-1/2-mandatory-errors/4.js +++ b/Sprint-1/2-mandatory-errors/4.js @@ -1,2 +1,2 @@ -const 12HourClockTime = "8:53 pm"; -const 24hourClockTime = "20:53"; +const TwelveHourClockTime = "8:53 pm"; +const TwentyFourHourClockTime = "20:53";