From 0b19fc5884f56e58ed0aef9c98ce2839ca5ab3a8 Mon Sep 17 00:00:00 2001 From: Abrsh100 Date: Sun, 5 Oct 2025 23:11:42 +0100 Subject: [PATCH 1/6] Explaining about the = sign after the count --- Sprint-1/1-key-exercises/1-count.js | 4 ++++ Sprint-1/1-key-exercises/2-initials.js | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js index 117bcb2b6..16caf1699 100644 --- a/Sprint-1/1-key-exercises/1-count.js +++ b/Sprint-1/1-key-exercises/1-count.js @@ -4,3 +4,7 @@ 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; when we the right side first count in the right side is considerd as 0 so 0+1 will be 1. +// But the = sign does not mean the mathimatical equal, its function is to take the result on the right and store it on the left. +// Therfore if we write the same code in next line the result is not one but 2 diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js index 47561f617..4a09edec5 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]}`; // https://www.google.com/search?q=get+first+character+of+string+mdn From 85e1e3e8602221152515190819a59521cd2709f7 Mon Sep 17 00:00:00 2001 From: Abrsh100 Date: Wed, 15 Oct 2025 08:30:48 +0100 Subject: [PATCH 2/6] Answering questions by paceing // to separate from the code. and other modifiy the code taccording to the error --- Sprint-1/1-key-exercises/1-count.js | 2 ++ Sprint-1/1-key-exercises/3-paths.js | 6 +++-- Sprint-1/1-key-exercises/4-random.js | 19 +++++++++++++ Sprint-1/2-mandatory-errors/0.js | 4 +-- Sprint-1/2-mandatory-errors/1.js | 3 ++- Sprint-1/2-mandatory-errors/2.js | 3 ++- Sprint-1/2-mandatory-errors/3.js | 10 +++++++ Sprint-1/2-mandatory-errors/4.js | 5 +++- .../1-percentage-change.js | 27 +++++++++++++++++++ .../3-mandatory-interpret/2-time-format.js | 7 +++++ Sprint-1/3-mandatory-interpret/3-to-pounds.js | 12 ++++++++- 11 files changed, 90 insertions(+), 8 deletions(-) diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js index 16caf1699..fbceaec9f 100644 --- a/Sprint-1/1-key-exercises/1-count.js +++ b/Sprint-1/1-key-exercises/1-count.js @@ -4,7 +4,9 @@ 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; when we the right side first count in the right side is considerd as 0 so 0+1 will be 1. // But the = sign does not mean the mathimatical equal, its function is to take the result on the right and store it on the left. // Therfore if we write the same code in next line the result is not one but 2 diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js index ab90ebb28..cbe18ba20 100644 --- a/Sprint-1/1-key-exercises/3-paths.js +++ b/Sprint-1/1-key-exercises/3-paths.js @@ -17,7 +17,9 @@ 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 lastDotIndex = base.lastIndexOf("."); +const ext = base.slice(lastDotIndex + 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 292f83aab..526f7c468 100644 --- a/Sprint-1/1-key-exercises/4-random.js +++ b/Sprint-1/1-key-exercises/4-random.js @@ -7,3 +7,22 @@ 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 + +// 1. +// The num in this scenario represent any integer between 1 and 100 + +// 2. +// Math.floor: rounds the number down to the nearest whole number which means it ignores the number to the right of the point. eg. 4.7=4 +// Math.random is a js code that returns any random number that is greater than or equal to 0 and less than 1 +//* is multiplication +// maximum is the maximum given number, in this case 100 +//- is a subtraction +// minimum is the minimum given number, in this case 1 +//(maximum - minimum +1) this is subtracting the minimum number from the maximum and add 1, in this case (100-1+1)=100 +//+ minimum: this turns the value by adding 1 to the whole equation. + +//3. + +console.log(num) diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js index cf6c5039f..65ad3030d 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 7a43cbea7..c3714c46a 100644 --- a/Sprint-1/2-mandatory-errors/1.js +++ b/Sprint-1/2-mandatory-errors/1.js @@ -1,4 +1,5 @@ // trying to create an age variable and then reassign the value by 1 -const age = 33; +let age = 33; age = age + 1; +console.log(age) diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js index e09b89831..ae2731079 100644 --- a/Sprint-1/2-mandatory-errors/2.js +++ b/Sprint-1/2-mandatory-errors/2.js @@ -1,5 +1,6 @@ // 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}`); diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js index ec101884d..54901d1d7 100644 --- a/Sprint-1/2-mandatory-errors/3.js +++ b/Sprint-1/2-mandatory-errors/3.js @@ -7,3 +7,13 @@ 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 + +// This code is not working because slice() is working with "string" or "arrays" but not with numbers. and cardNumber is a number. +// So the error is "TypeError:cardNumber.slice is not a function"\ +// slice() didn't recognize the number as I expected before. + +const cardNumber = 4533787178994213; +const last4Digits = String(cardNumber).slice(-4); +console.log(last4Digits) diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js index 21dad8c5d..148952cbc 100644 --- a/Sprint-1/2-mandatory-errors/4.js +++ b/Sprint-1/2-mandatory-errors/4.js @@ -1,2 +1,5 @@ const 12HourClockTime = "20:53"; -const 24hourClockTime = "08:53"; \ No newline at end of file +const 24hourClockTime = "08:53"; +// the 12 and 24 are changing position +const 24HourClockTime = "20:53"; +const 12hourClockTime = "08:53"; \ No newline at end of file diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js index e24ecb8e1..4a1858990 100644 --- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js +++ b/Sprint-1/3-mandatory-interpret/1-percentage-change.js @@ -13,10 +13,37 @@ console.log(`The percentage change is ${percentageChange}`); // a) How many function calls are there in this file? Write down all the lines where a function call is made +// There are five functions calls. +//carPrice.replaceAll(",", "") +//Number(carPrice.replaceAll(",", "")) +//priceAfterOneYear.replaceAll("," "") +//Number(priceAfterOneYear.replaceAll("," "")) +//console.log(`The percentage change is ${percentageChange}`) + // 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? +// When I run the code the error is "syntaxError: missing ) after argument list. +// The error comes from line 5 +// The error occurs due to the missing coma between the two strings in the replaceAll() call. +// Add coma between the two strings "priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));" + // c) Identify all the lines that are variable reassignment statements +// there are to lines that state variable reassignment +// carPrice = Number(carPrice.replaceAll(",", "")); +// priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," "")); + // d) Identify all the lines that are variable declarations +// There are fore variable declarations (line 1, line 2, line 7, line 8) +// let carPrice = "10,000"; +// let priceAfterOneYear = "8,543"; +// const priceDifference = carPrice - priceAfterOneYear; +// const percentageChange = (priceDifference / carPrice) * 100; + + // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression? + +// carprice at line 1 is a string in order to calculate for the next line of codes you have to change the string ti number. +// carPrice.replaceAll(",","")). delete the coma in between the number (e.g from "10,000" to "10000") +// number() change the string to number ("10000" to 10000) diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js index 47d239558..d2fa9711c 100644 --- a/Sprint-1/3-mandatory-interpret/2-time-format.js +++ b/Sprint-1/3-mandatory-interpret/2-time-format.js @@ -12,14 +12,21 @@ 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? +// There are 6 variable declaration. "line1, line3, line4, line6, line7, line9" // b) How many function calls are there? +// There is only one function call in this program "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 +// % is called remainder. There fore movieLength % 60 represents the remainder of the movie length after dividing by 60. // d) Interpret line 4, what does the expression assigned to totalMinutes mean? +// totalMinutes are calculated by subtracting the remaining seconds from movie length and divided by 60 to get full minutes. this helps to get a number which divided by 60 with out reminder. // e) What do you think the variable result represents? Can you think of a better name for this variable? +// result represents the total length of the movie in the form of Hour: minute: second +// moveDurationFormatted can be a better name to replace result. // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer +// Yes it works for all value. the only thing that is concerning is the validation of movieLength as the negative integer also gives value which is unrealistic. diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js index 60c9ace69..7934f9a8e 100644 --- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js +++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js @@ -1,4 +1,4 @@ -const penceString = "399p"; +onst penceString = "399p"; const penceStringWithoutTrailingP = penceString.substring( 0, @@ -25,3 +25,13 @@ console.log(`£${pounds}.${pence}`); // To begin, we can start with // 1. const penceString = "399p": initialises a string variable with the value "399p" +// 2. const penceStringWithoutTrailingP = penceString.substring( 0, penceString.length - 1); +// This remove the p and left the string with only 399 +// 3. const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0"); +// this code make sure that the string has 3 character. since one pound is equal 100 pence. +// 4. const pounds = paddedPenceNumberString.substring( 0, paddedPenceNumberString.length - 2); +// This code takes the number leaving the last 2 digits "in this case it takes 3 and leave 99" +// 5. const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2) .padEnd(2, "0"); +// This code takes the last digit from the string and also make sure that it has only two digits this gives a "99" value. +// 6. console.log(`£${pounds}.${pence}`); +// his gives a result with £ sign and separated by . " in this case it gives £3.99 " From 3a23806821a6bfb317d5e6e47f55e2cdaea83b7c Mon Sep 17 00:00:00 2001 From: Abrsh100 Date: Thu, 16 Oct 2025 07:35:40 +0100 Subject: [PATCH 3/6] spelline correction --- Sprint-1/3-mandatory-interpret/3-to-pounds.js | 2 +- Sprint-1/4-stretch-explore/chrome.md | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js index 7934f9a8e..8c97381b2 100644 --- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js +++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js @@ -34,4 +34,4 @@ console.log(`£${pounds}.${pence}`); // 5. const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2) .padEnd(2, "0"); // This code takes the last digit from the string and also make sure that it has only two digits this gives a "99" value. // 6. console.log(`£${pounds}.${pence}`); -// his gives a result with £ sign and separated by . " in this case it gives £3.99 " +// This gives a result with £ sign and separated by . " in this case it gives £3.99 " diff --git a/Sprint-1/4-stretch-explore/chrome.md b/Sprint-1/4-stretch-explore/chrome.md index e7dd5feaf..977818554 100644 --- a/Sprint-1/4-stretch-explore/chrome.md +++ b/Sprint-1/4-stretch-explore/chrome.md @@ -11,6 +11,7 @@ In the Chrome console, invoke the function `alert` with an input string of `"Hello world!"`; What effect does calling the `alert` function have? +. It gives "Hello World" Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`. From 9c41184a0f1368b07c70651d93bfaf6ceb6f4c99 Mon Sep 17 00:00:00 2001 From: Abrsh100 Date: Thu, 16 Oct 2025 07:54:09 +0100 Subject: [PATCH 4/6] answering md --- Sprint-1/4-stretch-explore/objects.md | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Sprint-1/4-stretch-explore/objects.md b/Sprint-1/4-stretch-explore/objects.md index 0216dee56..491c1013a 100644 --- a/Sprint-1/4-stretch-explore/objects.md +++ b/Sprint-1/4-stretch-explore/objects.md @@ -6,11 +6,25 @@ Open the Chrome devtools Console, type in `console.log` and then hit enter What output do you get? +. ƒ log() { [native code] } + + Now enter just `console` in the Console, what output do you get back? +. console {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …} + Try also entering `typeof console` +. 'object' + Answer the following questions: What does `console` store? +he console stores logs messages, errors and wornning , user input/output, variables and objects, and results of expressions you run. + What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean? + +console is a built in object +console.log means Accessing the log on the built in object which is the console +console.assert means Access the assert method on the console object +'.' it is an operator which is used to access a property or method of an object. \ No newline at end of file From 51950ad7178ec8be939ed079a4ebda5d8fb0353b Mon Sep 17 00:00:00 2001 From: Abrsh100 Date: Thu, 16 Oct 2025 07:58:06 +0100 Subject: [PATCH 5/6] correcting the spelling onst to const --- Sprint-1/3-mandatory-interpret/3-to-pounds.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js index 8c97381b2..de6ad5a92 100644 --- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js +++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js @@ -1,4 +1,4 @@ -onst penceString = "399p"; +const penceString = "399p"; const penceStringWithoutTrailingP = penceString.substring( 0, From 3a1abf9587ed2462b5babbf4b81de77c5022291f Mon Sep 17 00:00:00 2001 From: Abrsh100 Date: Thu, 16 Oct 2025 08:20:27 +0100 Subject: [PATCH 6/6] changing 4.js --- Sprint-1/2-mandatory-errors/4.js | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js index 148952cbc..9a4110607 100644 --- a/Sprint-1/2-mandatory-errors/4.js +++ b/Sprint-1/2-mandatory-errors/4.js @@ -1,5 +1,7 @@ -const 12HourClockTime = "20:53"; -const 24hourClockTime = "08:53"; -// the 12 and 24 are changing position -const 24HourClockTime = "20:53"; -const 12hourClockTime = "08:53"; \ No newline at end of file +//const 12HourClockTime = "20:53"; +//const 24hourClockTime = "08:53"; +// in Javascript variable name can't start with a number. +const hourClockTime12 = "20:53"; +const hourClockTime24 = "08:53"; +console.log(hourClockTime12) +console.log(hourClockTime24) \ No newline at end of file