Update 1-percentage-change.js

Add missing comma to replaceAll so the code runs smoothly.

Author: HoussamLh

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -11,12 +11,41 @@ console.log(`The percentage change is ${percentageChange}`);
 
 // Read the code and then answer the questions below
 
+// --- Answers to the questions ---
+
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
 
+// Function calls:
+// - Line 4: carPrice.replaceAll(",", "")
+// - Line 4: Number(...)
+// - Line 5: priceAfterOneYear.replaceAll("," "") --> syntax error here
+// - Line 5: Number(...)
+// - Line 10: console.log(...)
+
 // 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 at line 5: SyntaxError due to missing comma in replaceAll arguments
+// Fix: add the missing comma inside replaceAll:
+// priceAfterOneYear.replaceAll(",", "")
+
 // c) Identify all the lines that are variable reassignment statements
 
+// Reassignments:
+// - Line 4: carPrice = Number(...)
+// - Line 5: priceAfterOneYear = Number(...)
+
 // d) Identify all the lines that are variable declarations
 
+// Declarations:
+// - Line 1: let carPrice = "10,000";
+// - Line 2: let priceAfterOneYear = "8,543";
+// - Line 7: const priceDifference = ...
+// - Line 10: const percentageChange = ...
+
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+
+// Explanation:
+// - carPrice.replaceAll(",","") removes all commas from the string "10,000", turning it into "10000".
+// - Number(...) converts the resulting string "10000" into the numeric value 10000.
+// This allows mathematical operations on carPrice, which is originally a formatted string.
+