anwering the questions

Author: mandipsanger

Sprint-2/3-mandatory-interpret/1-percentage-change.js

@@ -12,11 +12,37 @@ 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
+// there are 5 function calls 
+//carPrice.replaceAll(",", "")
+//Number(carPrice.replaceAll(",", ""))
+//priceAfterOneYear.replaceAll(",", "")
+//Number(priceAfterOneYear.replaceAll(",", ""))
+//console.log(`The percentage change is ${percentageChange}`)
 
 // 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?
+//priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
 
 // c) Identify all the lines that are variable reassignment statements
+//priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," "")); missing a comma between the two arguments of replaceAll()
 
-// 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?
+// d) Identify all the lines that are variable declarations
+// let carPrice = "10,000";
+//let priceAfterOneYear = "8,543";
+//const priceDifference = carPrice - priceAfterOneYear;
+//const percentageChange = (priceDifference / carPrice) * 100;
+
+// e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+//carPrice.replaceAll(",", ""), "10,000" and removes the comma:"10000"
+//Number("10000") converts the string "10000" into the number:10000
+//So the whole expression:Number(carPrice.replaceAll(",", ""))converts "10,000"
+//from a string containing a comma into the actual number 10000.
+//"10,000"
+  // ↓
+//remove ","
+  // ↓
+// //"10000"
+//    ↓
+// convert to Number
+//    ↓
+// 10000