fix wrong changes

Author: anitahy73

Sprint-2/1-key-exercises/3-paths.js

@@ -16,8 +16,9 @@ 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 = filePath.slice(0, lastSlashIndex);
+console.log(`The direction of the file is ${dir}`);
+const ext = filePath.slice(filePath.lastIndexOf(".") + 1);
+console.log(`The extenction of the file is ${ext}`);
 
-const dir = ;
-const ext = ;
-
-// https://www.google.com/search?q=slice+mdn
+// https://www.google.com/search?q=slice+mdn

Sprint-2/2-mandatory-errors/4.js

@@ -1,2 +1,3 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const twelveHourClockTime = "8:53pm";
+const twentyFourHourClockTime = "20:53";
+// a variable name cannot start with a number and it will cause a SyntaxError

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;
@@ -11,12 +11,29 @@ 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
+// a) How many function calls are there in this file? Write down all the lines where a function call is made?
+//There are 5 function calls:
+//replaceAll
+//Line 4 and 5
+//Number(...)
+//Line 4 and 5
+//console.log()
+//Line 10 ,
 
 // 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?
+//error:line 5,SyntaxError: missing ) after argument list,there is a missing comma between the two arguments "," and " "
 
 // c) Identify all the lines that are variable reassignment statements
+//carPrice = Number(carPrice.replaceAll(",", ""));
+//priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 // d) Identify all the lines that are variable declarations
+//let carPrice
+//let priceAfterOneYear
+//const priceDifference
+//const percentageChange
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+//it removes all commas from the string
+//converts the string "10000" into the number 10000
+//The purpose is to turn the price from a formatted string into a number