@@ -2,7 +2,7 @@ let carPrice = "10,000";
22let priceAfterOneYear = "8,543" ;
33
44carPrice = Number ( carPrice . replaceAll ( "," , "" ) ) ;
5- priceAfterOneYear = Number ( priceAfterOneYear . replaceAll ( "," "" ) ) ;
5+ priceAfterOneYear = Number ( priceAfterOneYear . replaceAll ( "," , "" ) ) ;
66
77const priceDifference = carPrice - priceAfterOneYear ;
88const percentageChange = ( priceDifference / carPrice ) * 100 ;
@@ -12,11 +12,22 @@ console.log(`The percentage change is ${percentageChange}`);
1212// Read the code and then answer the questions below
1313
1414// a) How many function calls are there in this file? Write down all the lines where a function call is made
15+ // Line 4 and 4 has two function calls Number() and replaceAll()
16+ // - line 10 has a function console.log()
1517
1618// 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?
19+ // Line 5-
20+ // priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
21+ // ^^^
22+ // SyntaxError: missing ) after argument list
1723
1824// c) Identify all the lines that are variable reassignment statements
25+ // carPrice an priceAfterOneYear - lines 4 and 5
1926
2027// d) Identify all the lines that are variable declarations
28+ //Lines - 1, 2, 7, 8
2129
2230// e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
31+ // replaceAll() removes all occurrence of commas from the string e.g "10,000" becomes "10000" and the Number() wrapper converts
32+ // the string to number type; "10000" becomes 10000
33+
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