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

Lines changed: 11 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2,7 +2,7 @@ let carPrice = "10,000";
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let priceAfterOneYear = "8,543";
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carPrice = Number(carPrice.replaceAll(",", ""));
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priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
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priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
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const priceDifference = carPrice - priceAfterOneYear;
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const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,11 +12,21 @@ console.log(`The percentage change is ${percentageChange}`);
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// Read the code and then answer the questions below
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// a) How many function calls are there in this file? Write down all the lines where a function call is made
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// There are 5 function calls in this file.
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// Line 4 calls replaceAll() and Number().
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// Line 5 calls replaceAll() and Number().
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// Line 10 calls console.log().
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// 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?
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// The error was on line 5. The replaceAll() function call was missing the correct closing bracket/parenthesis.
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// I fixed it by making the line: priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
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// c) Identify all the lines that are variable reassignment statements
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// Lines 4 and 5 are variable reassignment statements because its declared on lines 1 and 2.
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// d) Identify all the lines that are variable declarations
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// line 1 and 2 are variable declarations because they are declared using the let keyword.
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// e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
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//// Removes commas and converts the string to a number.

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