3-mandatory-interpret completed

Author: bartoszkawiak

Sprint-2/3-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;
@@ -20,3 +20,10 @@ console.log(`The percentage change is ${percentageChange}`);
 // d) Identify all the lines that are variable declarations
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+
+//a)There are 5 function calls on line 4, 5 and 10.
+//b) error is coming from line 5, there is missing , between arguments in replaceAll method
+//c) line 4 and 5 
+//d) line 1,2 and 7,8
+/*e) replaceAll method inside of () replace comma with nothing, removing it from the string,
+then Number converts string to number data type  */

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

@@ -1,4 +1,4 @@
-const movieLength = 8784; // length of movie in seconds
+const movieLength = -8784.08; // length of movie in seconds
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -23,3 +23,11 @@ console.log(result);
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+
+
+//a) There are 6 variable declarations.
+//b)There is 1 function call on line 10
+//c) movieLength use remainder operator % . movieLength % 60 returns the remaining seconds after dividing the movie length into full minutes.
+//d) expression assigned to totalMinutes calculate movie time in whole minutes.
+//e) This variable represent total movie time in hh/mm/ss format, we could name it totalTime or totalMovieTime.
+//f) Yes, the code works correctly when movieLength is non-negative whole number that represents seconds.

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

@@ -24,4 +24,18 @@ console.log(`£${pounds}.${pence}`);
 // Try and describe the purpose / rationale behind each step
 
 // To begin, we can start with
+
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+// 3. penceStringWithoutTrailingP is created using substring() on penceString. The purpose is to remove the trailing "p".. 
+// 4. value for substring method to start from which is beginning of the string.
+// 5. penceString variable uses argument of .length to -1 (p) from the value, 399p becomes 399.
+// 6. substring method closure
+// 8. paddedPenceNumberString uses padStart() to make the string at least 3 characters long, adding "0" at the beginning when needed.
+// 9. pounds variable assigns paddedPenceNumberString that uses substring method which returns part of the string from the start of index.
+//10. value for substring method which is beginning of the string.
+//11. paddedPenceNumberString variable is using length argument and deduct 2 out of length of the string 399 become 3 as pounds.
+//12. Closes the substring method.
+//14. pence variable created from  paddedPenceNumberString 
+//15. substring method called which value of is in the parenthesis (variable length -2 characters)
+//16. method padEnd is called that contains at least 2 character and adds 0 at the end if needed.
+//18. we log £3.99 in the console.