From 1f8897790b8437d0b5a608eeabf061852a224b95 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 19:49:52 +0100 Subject: [PATCH 01/12] answered question in 1-count.js --- Sprint-1/1-key-exercises/1-count.js | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js index 117bcb2b6e..a581d152b7 100644 --- a/Sprint-1/1-key-exercises/1-count.js +++ b/Sprint-1/1-key-exercises/1-count.js @@ -4,3 +4,6 @@ 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: we are re-assigning count using the assignment operator (=). The " = " is used in JavaScript to assing a value +// to a variable and in this case we are re-assinging count to equal count + 1. \ No newline at end of file From f2ed2f56945a2e81376056c693873d748f71a704 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 20:04:39 +0100 Subject: [PATCH 02/12] completed 2-initials.js and tested it with logging to the console --- Sprint-1/1-key-exercises/2-initials.js | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js index 47561f6175..4ff9344e2e 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 = `${firstName.charAt(0)}${middleName.charAt(0)}${lastName.charAt(0)}`; +console.log(initials) // https://www.google.com/search?q=get+first+character+of+string+mdn From 302efeee13c9ad3a90b0af7384934db4b4df0e0a Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 20:26:01 +0100 Subject: [PATCH 03/12] completed 3-paths.js and tested it with logging to the console --- Sprint-1/1-key-exercises/3-paths.js | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js index ab90ebb28e..813a9ad892 100644 --- a/Sprint-1/1-key-exercises/3-paths.js +++ b/Sprint-1/1-key-exercises/3-paths.js @@ -12,12 +12,15 @@ const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt"; const lastSlashIndex = filePath.lastIndexOf("/"); const base = filePath.slice(lastSlashIndex + 1); + 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(1 , 44); +console.log(dir) + const ext = filePath.slice(lastSlashIndex + 5 ); +console.log(ext) // https://www.google.com/search?q=slice+mdn \ No newline at end of file From 63ea100f32995164a7ca035bdc52f4f05e101795 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 22:13:53 +0100 Subject: [PATCH 04/12] completed 4-random.js and tested it with logging to the console --- Sprint-1/1-key-exercises/4-random.js | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js index 292f83aabb..902ff68b11 100644 --- a/Sprint-1/1-key-exercises/4-random.js +++ b/Sprint-1/1-key-exercises/4-random.js @@ -2,8 +2,26 @@ const minimum = 1; const maximum = 100; const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum; +console.log(num) + + + //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 + //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 + +num is a variable that'll hold the output of the expression in line 4, I have run the code several times and I get a +different number each run. +Math.random returns a random decimal number between 0 (inclusive) and 1 (exclusive). +Math.floor rounds the number to the nearest integer. +This expression is evaluated according to parenthesis and operator precedence, so for this expression it will be as follows: +1. (maximum - minimum + 1) +2. Math.random() is called +3. result from Math.random * result from > maximum - minimum + 1 +4. Math.floor is then called with (Math.random * result from > maximum - minimum + 1) +5. result from Math.floor + 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 -// 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 From 7f35b334ed31b2b19a147b522f699c6eff70fff6 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 22:19:31 +0100 Subject: [PATCH 05/12] Answered question in 0.js --- Sprint-1/2-mandatory-errors/0.js | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js index cf6c5039f7..906fd0c02f 100644 --- a/Sprint-1/2-mandatory-errors/0.js +++ b/Sprint-1/2-mandatory-errors/0.js @@ -1,2 +1,5 @@ -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?*/ + +//Answer +//We will comment it out. \ No newline at end of file From e6d78a0cc4595c2aa18de9b5e37b3298ea95a327 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 22:23:44 +0100 Subject: [PATCH 06/12] completed task in 1.js --- Sprint-1/2-mandatory-errors/1.js | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js index 7a43cbea76..712f9bd92a 100644 --- a/Sprint-1/2-mandatory-errors/1.js +++ b/Sprint-1/2-mandatory-errors/1.js @@ -1,4 +1,8 @@ // trying to create an age variable and then reassign the value by 1 -const age = 33; +/* we cannot reassign a variable that was declared using the const keyword so we will change it to the let keyword + which allows us to reassign variables*/ + +let age = 33; age = age + 1; +console.log(age) From 4ffd3030d28015528eb04b223e5f7b4deb1d6e1e Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 22:27:52 +0100 Subject: [PATCH 07/12] fixed the error in 2.js --- Sprint-1/2-mandatory-errors/2.js | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js index e09b89831d..47f6fd669f 100644 --- a/Sprint-1/2-mandatory-errors/2.js +++ b/Sprint-1/2-mandatory-errors/2.js @@ -1,5 +1,9 @@ // 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}`); + + +/* The variable is declared after it's been used and when we run the code we get this > ReferenceError: Cannot access + 'cityOfBirth' before initialization */ \ No newline at end of file From 78253f11328fe07b0b946d7cdf86099973ed5bec Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 23:29:53 +0100 Subject: [PATCH 08/12] fixed the error in 3.js and the code now runs --- Sprint-1/2-mandatory-errors/3.js | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js index ec101884db..a35409662a 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 cardNumber = 4533787178994213; +//const last4Digits = cardNumber.slice(-4); + + +// to fix the code, we'll convert the number to a string because .slice does not work on number data type +let cardNumber = 4533787178994213; +cardNumber = cardNumber.toString() +let last4Digits = cardNumber.slice(-4); // The last4Digits variable should store the last 4 digits of cardNumber // However, the code isn't working @@ -7,3 +13,10 @@ const last4Digits = cardNumber.slice(-4); // 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? // Then try updating the expression last4Digits is assigned to, in order to get the correct value + +//Answer +// We are not logging to the console +// The slice method should be a positive number to represent the index position. + +console.log(last4Digits) +//TypeError: cardNumber.slice is not a function \ No newline at end of file From df2d21411e027607b281d29ccd7ce46becf4bdd4 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Wed, 17 Jun 2026 23:33:50 +0100 Subject: [PATCH 09/12] fixed the variable naming in 4.js --- Sprint-1/2-mandatory-errors/4.js | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js index 5f86c730bc..427d683da5 100644 --- a/Sprint-1/2-mandatory-errors/4.js +++ b/Sprint-1/2-mandatory-errors/4.js @@ -1,2 +1,4 @@ -const 12HourClockTime = "8:53pm"; -const 24hourClockTime = "20:53"; +const _12HourClockTime = "8:53pm"; +const $24hourClockTime = "20:53"; + +//when starting a variable name with a number we have to precede with either of _ or $ \ No newline at end of file From d8e5852c333acd3e015dadecc69ae9f13381e275 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Thu, 18 Jun 2026 18:28:37 +0100 Subject: [PATCH 10/12] answered all questions in 1-percentage-change.js --- Sprint-1/3-mandatory-interpret/1-percentage-change.js | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js index e24ecb8e18..30ec3e8f69 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 +12,18 @@ 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 +// There are 3 function calls. line 4 Number() and .replaceAll() +// line 12 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? +//A syntaxError is occurring on line 5, we are missing a "," and a closing ")" // c) Identify all the lines that are variable reassignment statements +// line 4 and 5 // d) Identify all the lines that are variable declarations - +// line 1, 2, 7, 8 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression? +/* We are removing the comma, the replaceAll method takes in two arguements, 1 for what to replace and 2 for what to +replace by, and in this case we are replaceing the comma with an empty string. we wrap the carPrice variable which is a string +with the Number() function to convert it into a number*/ \ No newline at end of file From bae8454e3a2b019bd33c46e402a644fc44d68bb8 Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Thu, 18 Jun 2026 18:59:36 +0100 Subject: [PATCH 11/12] answered all questions in 2-time-format.js --- Sprint-1/3-mandatory-interpret/2-time-format.js | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js index 47d2395587..51f9a04d74 100644 --- a/Sprint-1/3-mandatory-interpret/2-time-format.js +++ b/Sprint-1/3-mandatory-interpret/2-time-format.js @@ -1,4 +1,5 @@ -const movieLength = 8784; // length of movie in seconds +// const movieLength = 8784; // length of movie in seconds +const movieLength = 879094; // length of movie in seconds const remainingSeconds = movieLength % 60; const totalMinutes = (movieLength - remainingSeconds) / 60; @@ -12,14 +13,24 @@ 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? +// 6 // b) How many function calls are there? +// 1 // c) Using documentation, explain what the expression movieLength % 60 represents // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators +// % is the modulos operator, movieLength % 60 gives us the remainder, essentially we divide 60 by movieLenght and return the remainder // d) Interpret line 4, what does the expression assigned to totalMinutes mean? +/* we are subtracting remainingSeconds from movieLength, remainingSeconds is a variable that holds the result from totalMinutes % 60, +the expression in brackets will evaluate first and then the result divided by 60. +*/ // e) What do you think the variable result represents? Can you think of a better name for this variable? - +//runTime // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer +/* I have experimented with different values by changing the movieLength variable, and they all work, it works because we have +didn't hardcode our expressions and used variables. +*/ + From 20eeeeaa05c3f6217611b713236ca86795b7bcbb Mon Sep 17 00:00:00 2001 From: d-odumosu Date: Fri, 19 Jun 2026 21:09:04 +0100 Subject: [PATCH 12/12] answered all questions in 3-to-pounds.js --- Sprint-1/3-mandatory-interpret/3-to-pounds.js | 14 ++++++++++++++ 1 file changed, 14 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..c5e6651ed7 100644 --- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js +++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js @@ -6,6 +6,7 @@ const penceStringWithoutTrailingP = penceString.substring( ); const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0"); + const pounds = paddedPenceNumberString.substring( 0, paddedPenceNumberString.length - 2 @@ -25,3 +26,16 @@ console.log(`£${pounds}.${pence}`); // To begin, we can start with // 1. const penceString = "399p": initialises a string variable with the value "399p" +// 3. we are declaring a variable and assigning it the variable penceString which holds the value "399p" but without the p - the method .subString is used +// here to remove the p. +// 8. we are declaring a variable and assigning it the variable penceStringWithoutTrailingP which holds the value "399 +// we are then using the .padStart method, however the method will not make any change because we have passed in the argument 3 which i +// is the total length the string should be after padding - our string is already 3 lengths long. +// 10. we are using a substring to slice our string from the first index to paddedPenceNumberString.length - 2, paddedPenceNumberString.length +// will give us the number 3, so paddedPenceNumberString.length - 2 also means 3 - 2 which gives us 1, so from index 0 which is 3 to index 1 which is exclusive. +// 15. we are declaring a variable pence and assigning it the variable paddedPenceNumberString which holds the result of a couple +// method chains, firstly a .substring method with the argument "paddedPenceNumberString.length - 2" which also means 3 - 2, so it will +// slice from index 1 to the end as we have not given a second argument, then we follow with a padEnd, this time we are adding +// characters to the end of the string - we want a total of two characters +//19. we use a string template to console log +