done with Sprint !

Author: obstie

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
+    // Anwer: The function is called 4 times in the code line 7 and 8 then we have the built-in functions line 4 and 5
 
 // 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?
+    // Answer: The error is coming from line 5 a comma is missing between the quotes '(priceAfterOneYear.replaceAll("," ""))'
 
 // c) Identify all the lines that are variable reassignment statements
+    // Answer: Line 4 and 5
 
 // d) Identify all the lines that are variable declarations
+    // Answer: Line 1, 2, 7 and 8 
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+    // Answer: It removing all the commas and also converting the values to a number

Sprint-1/3-mandatory-interpret/2-time-format.js

@@ -1,4 +1,4 @@
-const movieLength = 8784; // length of movie in seconds
+const movieLength = 81034; // length of movie in seconds
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -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?
+    // Answer: There are 6
 
 // b) How many function calls are there?
+    // Answer: There are no function calls
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
+    // Answer: This devides values and gives us the remainder 
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+    // Answer: It subtracts remaining seconds from movie length then devides that by 60
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
+    // Answer: This will display the movie length formatted in hours, minutes and seconds, it can be named totalTime
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+    // Answer: Yes it works with all values, this can be because there are template litterals in the result variable 

Sprint-1/3-mandatory-interpret/3-to-pounds.js

@@ -1,19 +1,12 @@
 const penceString = "399p";
 
-const penceStringWithoutTrailingP = penceString.substring(
-  0,
-  penceString.length - 1
-);
+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");
+const pounds = paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2);
+
+const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0");
 
 console.log(`£${pounds}.${pence}`);
 
@@ -25,3 +18,16 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+
+// 2. penceStringWithoutTrailingP the last "p" from line 1 is removed
+  // substring() method will select a charactor from index 0 to -1, and return the new string "-1 is the last charactor" then we get "399"
+
+// 3. paddedPenceNumberString  this is assingned to the variable penceStringWithoutTrailingP where a charactor is added to the beggining of the string by the method padStart
+  // 3 will add 2 zeros to the begining of the string, we have padStart(3, "0") and we already have three charactor 
+  // if it was padStart(4, "0") then the result was "0399"
+
+// 4. pounds will take the paddedPenceNumberString, select all the charactors exept the last two
+
+// 5. pence selects the values in paddedPenceNumberString, then makes sure we have the last we have two digits at the end
+
+// console will print the output value in pounds