London | ITP-may-2026 | Hugh Mills | Sprint 2 | Sprint 2 Coursework

Sprint-2/1-key-errors/0.js

@@ -1,6 +1,8 @@
 // Predict and explain first...
 //  =============> write your prediction here
 
+//str has allready been declared.
+
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
@@ -10,4 +12,14 @@ function capitalise(str) {
 }
 
 // =============> write your explanation here
+/*
+  I think its because of been called multiple times, at "let str" after "funtion capitalise(str)"
+  changing "let str" to "let capitalised" should help the issue.
+*/
 // =============> write your new code here
+/*
+function capitalise(str) {
+  let capitalised = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return capitalised;
+}
+*/

Sprint-2/1-key-errors/1.js

@@ -2,7 +2,11 @@
 
 // Why will an error occur when this program runs?
 // =============> write your prediction here
-
+/*
+Yes an error will occur.
+decimalNumber has been declared
+an error will another errour would be for, decimalNumber is not defined
+*/
 // Try playing computer with the example to work out what is going on
 
 function convertToPercentage(decimalNumber) {
@@ -15,6 +19,19 @@ function convertToPercentage(decimalNumber) {
 console.log(decimalNumber);
 
 // =============> write your explanation here
-
+/*
+decimalNumber has been called and set as a const.
+"console.log(decimalNumber)" wont work as decimalNumber only excistes inside the function not outside it.
+*/
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+/*
+function convertToPercentage(decimalNumber) {
+  const decimal = 0.5;
+  const percentage = `${decimal * 100}%`;
+
+  return percentage;
+
+}
+  console.log(convertToPercentage)
+*/

Sprint-2/1-key-errors/2.js

@@ -1,6 +1,5 @@
 
 // Predict and explain first BEFORE you run any code...
-
 // this function should square any number but instead we're going to get an error
 
 // =============> write your prediction of the error here
@@ -10,11 +9,17 @@ function square(3) {
 }
 
 // =============> write the error message here
+// SyntaxError: Unexpected number
 
 // =============> explain this error message here
-
+// the (3) is a value not a variable or parimitor name, it should be num instead for the functino to work corretly.
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
-
-
+/*
+    function square(num) {
+     return num * num;
+     } 
+
+     console.log (square(3));
+*?

Sprint-2/2-mandatory-debug/0.js

@@ -1,6 +1,7 @@
 // Predict and explain first...
 
 // =============> write your prediction here
+// is going to have undefined
 
 function multiply(a, b) {
   console.log(a * b);
@@ -9,6 +10,17 @@ function multiply(a, b) {
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
 // =============> write your explanation here
-
+/*
+its going to have undefined for the ${multiply(10, 32) as in teh function it has console.log.
+It needs to have "return" in order for it to keep teh vaule for the function as it is only displying it right now.
+*?
 // 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)}`);
+
+*/

Sprint-2/2-mandatory-debug/1.js

@@ -1,5 +1,6 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// return undefined for ${sum(10, 32)}
 
 function sum(a, b) {
   return;
@@ -9,5 +10,13 @@ function sum(a, b) {
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+// in the function return is split from a + b by ; 
 // 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)}`);
+*/

Sprint-2/2-mandatory-debug/2.js

@@ -2,6 +2,7 @@
 
 // Predict the output of the following code:
 // =============> Write your prediction here
+// There wont be an error warning shown, it will show 3 request.
 
 const num = 103;
 
@@ -15,10 +16,27 @@ 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
+/*  Simply the "const num = 103" is forcing return num to be 103 at all times.
+    This can be fixed by putting num in getLastDigit(num), removing the "const num = 103" as it isnt needed.
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+/* 
+function getLastDigit(num) {
+  return num.toString().slice(-1);
+}
+
+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

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -15,5 +15,10 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
+    let squaredHeight = (height * height);
+    let baseBmi = (weight / squaredHeight);
+    return bmi = Math.round(baseBmi * 10) / 10;
+}
+console.log (`BMI is ${calculateBMI(70,1.73)}`);
+
     // return the BMI of someone based off their weight and height
-}

Sprint-2/3-mandatory-implement/2-cases.js

@@ -14,3 +14,11 @@
 // 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 UpperSnake(text) {
+    let upperCase = text.toUpperCase();
+    let snakeCase = upperCase.replaceAll(" ","_");
+    return snakeCase; 
+}
+
+console.log(UpperSnake("hello there bob"));

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -4,3 +4,27 @@
 // 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(penceString) {
+const penceStringWithoutTrailingP = penceString.substring(
+  0,
+  penceString.length - 1
+);
+
+const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+const pounds = paddedPenceNumberString.substring(
+  0,
+  paddedPenceNumberString.length - 2
+);
+
+const pence = paddedPenceNumberString
+  .substring(paddedPenceNumberString.length - 2)
+  .padEnd(2, "0");
+
+console.log(`£${pounds}.${pence}`);
+}
+
+toPounds("399p");
+toPounds("9p");
+toPounds("1399p");
+toPounds("5697p");

Sprint-2/4-mandatory-interpret/time-format.js

@@ -21,18 +21,18 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> 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
+// =============> 0 
 
 // c) What is the return value of pad is called for the first time?
-// =============> write your answer here
+// =============> 00
 
 // 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
+// =============> 1, when pad is last called its at ${pad(remainingSeconds)} where the value left is 1
 
 // e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> 01 as its value is 1 and it pads to two digits, so makes it 01