From 377fec1244fdea07d347d892e625d636e41e3edd Mon Sep 17 00:00:00 2001 From: Jacknguyen4438 Date: Thu, 5 Mar 2026 02:50:16 +0000 Subject: [PATCH 1/4] Finish section 1 and 2 for sprint 2 course work. --- Sprint-2/1-key-errors/0.js | 20 ++++++++++++++++++-- Sprint-2/1-key-errors/1.js | 23 +++++++++++++++++++++-- Sprint-2/1-key-errors/2.js | 11 +++++++++-- Sprint-2/2-mandatory-debug/0.js | 18 ++++++++++++++++++ Sprint-2/2-mandatory-debug/1.js | 18 ++++++++++++++++-- Sprint-2/2-mandatory-debug/2.js | 29 ++++++++++++++++++++++++++++- 6 files changed, 110 insertions(+), 9 deletions(-) diff --git a/Sprint-2/1-key-errors/0.js b/Sprint-2/1-key-errors/0.js index 653d6f5a0..825d8fffd 100644 --- a/Sprint-2/1-key-errors/0.js +++ b/Sprint-2/1-key-errors/0.js @@ -1,13 +1,29 @@ // Predict and explain first... // =============> write your prediction here +/* +My prediction is that this function will take the first letter of a string and capital it. +*/ + // call the function capitalise with a string input // interpret the error message and figure out why an error is occurring -function capitalise(str) { +/*function capitalise(str) { let str = `${str[0].toUpperCase()}${str.slice(1)}`; return str; -} +}*/ // =============> write your explanation here + +/* +The main reason why the capitalise function have a not define error because the the str variable have been declare in the parameter +inside the function, the str variable is re-declare again that will break the rule of how variable work. +*/ + // =============> write your new code here + +function capitalise(str) { + let firstCapitaLetter = `${str[0].toUpperCase()}${str.slice(1)}`; + return firstCapitaLetter; +}; +console.log(capitalise("hello")); \ No newline at end of file diff --git a/Sprint-2/1-key-errors/1.js b/Sprint-2/1-key-errors/1.js index f2d56151f..5577c030a 100644 --- a/Sprint-2/1-key-errors/1.js +++ b/Sprint-2/1-key-errors/1.js @@ -2,9 +2,10 @@ // Why will an error occur when this program runs? // =============> write your prediction here +// When the JS executed the code, it will give 2 possible error 1 is decimalNumber is define inside the function and decimalNumber is undefined when using console.log // Try playing computer with the example to work out what is going on - +/* function convertToPercentage(decimalNumber) { const decimalNumber = 0.5; const percentage = `${decimalNumber * 100}%`; @@ -13,8 +14,26 @@ function convertToPercentage(decimalNumber) { } console.log(decimalNumber); - +*/ // =============> write your explanation here +/* +For function convertToPercentage there are 1 error: + inside the function the decimalNumber parameter is being re-declare and given a fix value, this will give this function a + decimalNumber are ready defined. + +Next is when we console.log the function instead of calling the function name and value we used the function parameter variable name +instead. This will give the error decimalNumber is undefined. +*/ + // Finally, correct the code to fix the problem // =============> write your new code here + + +function convertToPercentage(decimalNumber) { + const percentage = `${decimalNumber * 100}%`; + + return percentage; +} + +console.log(convertToPercentage(0.25)); \ No newline at end of file diff --git a/Sprint-2/1-key-errors/2.js b/Sprint-2/1-key-errors/2.js index aad57f7cf..175445b2f 100644 --- a/Sprint-2/1-key-errors/2.js +++ b/Sprint-2/1-key-errors/2.js @@ -5,16 +5,23 @@ // =============> write your prediction of the error here +// For function square the variable inside the parameter will have a error, because number cant be used when name a variable and num variable is undefine. +/* function square(3) { return num * num; } - +*/ // =============> write the error message here +// SyntaxError: Unexpected number // =============> explain this error message here +//Because number cant be used when name a variable. // Finally, correct the code to fix the problem // =============> write your new code here - +function square(num) { + return num * num; +}; +console.log(square(3)); \ No newline at end of file diff --git a/Sprint-2/2-mandatory-debug/0.js b/Sprint-2/2-mandatory-debug/0.js index b27511b41..95ebefec0 100644 --- a/Sprint-2/2-mandatory-debug/0.js +++ b/Sprint-2/2-mandatory-debug/0.js @@ -1,14 +1,32 @@ // Predict and explain first... // =============> write your prediction here +/* +The function multiply when is log into the terminal. we will receive a print out expression from +first console.log inside the function and undefined value from the string template inside the section console.log. +*/ +/* function multiply(a, b) { console.log(a * b); } console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`); +*/ // =============> write your explanation here +/* +First the function multiply have 2 parameter identifier a and b, the main purpose of this function is to multiply any argument that put +into the identifier a and b. Inside the the function is we have the function call console.log and nested inside is the expression from multiply of a and b. +However this will lead to error, since we need to return the expression(value) back to the function so it can be re used when call in a string template or other +function. +*/ // Finally, correct the code to fix the problem // =============> write your new code here + +function multiply(a, b) { + return a * b; +} + +console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`); diff --git a/Sprint-2/2-mandatory-debug/1.js b/Sprint-2/2-mandatory-debug/1.js index 37cedfbcf..f317779a0 100644 --- a/Sprint-2/2-mandatory-debug/1.js +++ b/Sprint-2/2-mandatory-debug/1.js @@ -1,13 +1,27 @@ // Predict and explain first... // =============> write your prediction here - +// The function sum when is call inside the string template. The print out will be "The sum of 10 and 32 is undefined". +/* function sum(a, b) { return; a + b; } console.log(`The sum of 10 and 32 is ${sum(10, 32)}`); - +*/ // =============> write your explanation here + +/* +For the function sum the writing format is correct but however instead of return the expression from the combine value +of a and b, right now there is no expression return back to the function. So when the function is used inside the string template, +it give the value of undefined instead of actual value of a and b combine together. +*/ + // Finally, correct the code to fix the problem // =============> write your new code here + +function sum(a, b) { + return a + b; +} + +console.log(`The sum of 10 and 32 is ${sum(10, 32)}`); \ No newline at end of file diff --git a/Sprint-2/2-mandatory-debug/2.js b/Sprint-2/2-mandatory-debug/2.js index 57d3f5dc3..cf2ed5718 100644 --- a/Sprint-2/2-mandatory-debug/2.js +++ b/Sprint-2/2-mandatory-debug/2.js @@ -3,6 +3,11 @@ // Predict the output of the following code: // =============> Write your prediction here +/* The function getLastDigit should get the last digit number from any number argument pass into the function, but however it only take +value from variable num and only give out the value of 3. +*/ + +/* const num = 103; function getLastDigit() { @@ -12,13 +17,35 @@ function getLastDigit() { console.log(`The last digit of 42 is ${getLastDigit(42)}`); console.log(`The last digit of 105 is ${getLastDigit(105)}`); console.log(`The last digit of 806 is ${getLastDigit(806)}`); - +*/ // Now run the code and compare the output to your prediction // =============> write the output here +/* +The last digit of 42 is 3 +The last digit of 105 is 3 +The last digit of 806 is 3 +* +/ + // Explain why the output is the way it is // =============> write your explanation here +/* +Because the function getLastDigit when use, instead of picking last digit number of any random number argument pass into the function +it only pick last digit number from the variable num value of 103. So when the user try to input other random number into +the function is only print out the number 3 as the result. +*/ // Finally, correct the code to fix the problem // =============> write your new code here +const num = 103; + +function getLastDigit(digit) { + return digit.toString().slice(-1); +} +console.log(`The last digit of 103 is ${getLastDigit(num)}`); +console.log(`The last digit of 42 is ${getLastDigit(42)}`); +console.log(`The last digit of 105 is ${getLastDigit(105)}`); +console.log(`The last digit of 806 is ${getLastDigit(806)}`); + // This program should tell the user the last digit of each number. // Explain why getLastDigit is not working properly - correct the problem From d3f986bee722ccedefa660c1ca23410c088ff76c Mon Sep 17 00:00:00 2001 From: Jacknguyen4438 Date: Thu, 5 Mar 2026 15:14:09 +0000 Subject: [PATCH 2/4] Finished the last part of sprint 2 course work and ready for PR --- Sprint-2/3-mandatory-implement/1-bmi.js | 5 ++++- Sprint-2/3-mandatory-implement/2-cases.js | 5 +++++ Sprint-2/3-mandatory-implement/3-to-pounds.js | 7 +++++++ Sprint-2/4-mandatory-interpret/time-format.js | 16 +++++++++++++++- 4 files changed, 31 insertions(+), 2 deletions(-) diff --git a/Sprint-2/3-mandatory-implement/1-bmi.js b/Sprint-2/3-mandatory-implement/1-bmi.js index 17b1cbde1..c638a81df 100644 --- a/Sprint-2/3-mandatory-implement/1-bmi.js +++ b/Sprint-2/3-mandatory-implement/1-bmi.js @@ -16,4 +16,7 @@ function calculateBMI(weight, height) { // return the BMI of someone based off their weight and height -} \ No newline at end of file + return Number((weight / (height * height)).toFixed(1)); +} + +console.log(calculateBMI(60,1.56)); diff --git a/Sprint-2/3-mandatory-implement/2-cases.js b/Sprint-2/3-mandatory-implement/2-cases.js index 5b0ef77ad..f95e0fc31 100644 --- a/Sprint-2/3-mandatory-implement/2-cases.js +++ b/Sprint-2/3-mandatory-implement/2-cases.js @@ -14,3 +14,8 @@ // You will need to come up with an appropriate name for the function // Use the MDN string documentation to help you find a solution // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase +function upperCaseSentence (word){ +return word.toUpperCase().replace(" ","_"); +}; + +console.log(upperCaseSentence("wake up")) \ No newline at end of file diff --git a/Sprint-2/3-mandatory-implement/3-to-pounds.js b/Sprint-2/3-mandatory-implement/3-to-pounds.js index 6265a1a70..a85596aed 100644 --- a/Sprint-2/3-mandatory-implement/3-to-pounds.js +++ b/Sprint-2/3-mandatory-implement/3-to-pounds.js @@ -4,3 +4,10 @@ // You will need to declare a function called toPounds with an appropriately named parameter. // You should call this function a number of times to check it works for different inputs + +function toPounds (pence){ + let pound = pence * 0.01; + return `£ ${pound.toFixed(2)}`; +}; + +console.log(toPounds("400")); diff --git a/Sprint-2/4-mandatory-interpret/time-format.js b/Sprint-2/4-mandatory-interpret/time-format.js index 7c98eb0e8..6d8d0824a 100644 --- a/Sprint-2/4-mandatory-interpret/time-format.js +++ b/Sprint-2/4-mandatory-interpret/time-format.js @@ -10,7 +10,7 @@ function formatTimeDisplay(seconds) { return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`; } - +console.log(formatTimeDisplay(61)); // You will need to play computer with this example - use the Python Visualiser https://pythontutor.com/visualize.html#mode=edit // to help you answer these questions @@ -18,17 +18,31 @@ function formatTimeDisplay(seconds) { // a) When formatTimeDisplay is called how many times will pad be called? // =============> write your answer here +//when the function formatTimeDisplay when is called, the pad function will call 3 times. // Call formatTimeDisplay with an input of 61, now answer the following: // b) What is the value assigned to num when pad is called for the first time? // =============> write your answer here +// The assign value to num when it first call is 0. // c) What is the return value of pad is called for the first time? // =============> write your answer here +// The return value of pad for the first time is 0. // d) What is the value assigned to num when pad is called for the last time in this program? Explain your answer // =============> write your answer here +/*The assign value to num when the function pad when it +last called will be 1. Because when the pad function called for the third time, it will +receive the value from the variable remainingSeconds(seconds % 60 = 1); +*/ + // e) What is the return value assigned to num when pad is called for the last time in this program? Explain your answer // =============> write your answer here +/* +the assign return value to num when the function pad when it last called will be 01, +because the when the value remainingSeconds pass into the pad function. It will +turn into string that will be add and combine "0" into the string "1" to the left because the padStart method check the total +length of the string "1" and it is less then 2. +*/ \ No newline at end of file From 9398992183590a66c729bf07cb94b551c642c60d Mon Sep 17 00:00:00 2001 From: Jacknguyen4438 Date: Wed, 6 May 2026 16:57:18 +0100 Subject: [PATCH 3/4] Remove console log to fix with meta data error --- Sprint-2/3-mandatory-implement/1-bmi.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-2/3-mandatory-implement/1-bmi.js b/Sprint-2/3-mandatory-implement/1-bmi.js index c638a81df..a07e4b0b9 100644 --- a/Sprint-2/3-mandatory-implement/1-bmi.js +++ b/Sprint-2/3-mandatory-implement/1-bmi.js @@ -19,4 +19,4 @@ function calculateBMI(weight, height) { return Number((weight / (height * height)).toFixed(1)); } -console.log(calculateBMI(60,1.56)); + From 7909a7568b588d3cca35c85dda53c53cba715349 Mon Sep 17 00:00:00 2001 From: Jacknguyen4438 Date: Wed, 6 May 2026 17:02:53 +0100 Subject: [PATCH 4/4] Accepting change for resubmit --- Sprint-2/4-mandatory-interpret/time-format.js | 3 --- 1 file changed, 3 deletions(-) diff --git a/Sprint-2/4-mandatory-interpret/time-format.js b/Sprint-2/4-mandatory-interpret/time-format.js index ed7d882a5..0c97c6ac6 100644 --- a/Sprint-2/4-mandatory-interpret/time-format.js +++ b/Sprint-2/4-mandatory-interpret/time-format.js @@ -33,16 +33,13 @@ console.log(formatTimeDisplay(61)); // d) What is the value assigned to num when pad is called for the last time in this program? Explain your answer // =============> write your answer here -<<<<<<< comparisons-assertions-breaking-down-problems-sprint-2 /*The assign value to num when the function pad when it last called will be 1. Because when the pad function called for the third time, it will receive the value from the variable remainingSeconds(seconds % 60 = 1); */ // e) What is the return value assigned to num when pad is called for the last time in this program? Explain your answer -======= // e) What is the return value of pad when it is called for the last time in this program? Explain your answer ->>>>>>> main // =============> write your answer here /* the assign return value to num when the function pad when it last called will be 01,