fixes back to deleted files.

Author: eminakturk

Sprint-1/1-key-exercises/1-count.js

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+let count = 0;
+
+count = count + 1;
+
+// Line 1 is a variable declaration, creating the count variable with an initial value of 0
+// Describe what line 3 is doing, in particular focus on what = is doing

Sprint-1/1-key-exercises/2-initials.js

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+let firstName = "Creola";
+let middleName = "Katherine";
+let lastName = "Johnson";
+
+// Declare a variable called initials that stores the first character of each string.
+// This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
+
+let initials = ``;
+
+// https://www.google.com/search?q=get+first+character+of+string+mdn
+

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

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+// The diagram below shows the different names for parts of a file path on a Unix operating system
+
+// ┌─────────────────────┬────────────┐
+// │          dir        │    base    │
+// ├──────┬              ├──────┬─────┤
+// │ root │              │ name │ ext │
+// "  /    home/user/dir / file  .txt "
+// └──────┴──────────────┴──────┴─────┘
+
+// (All spaces in the "" line should be ignored. They are purely for formatting.)
+
+const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
+const lastSlashIndex = filePath.lastIndexOf("/");
+const base = filePath.slice(lastSlashIndex + 1);
+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 = ;
+const ext = ;
+
+// https://www.google.com/search?q=slice+mdn

Sprint-1/1-key-exercises/4-random.js

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+const minimum = 1;
+const maximum = 100;
+
+const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
+
+// In this exercise, you will need to work out what num represents?
+// Try breaking down the expression and using documentation to explain what it means
+// It will help to think about the order in which expressions are evaluated
+// Try logging the value of num and running the program several times to build an idea of what the program is doing

Sprint-1/2-mandatory-errors/0.js

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+This is just an instruction for the first activity - but it is just for human consumption
+We don't want the computer to run these 2 lines - how can we solve this problem?

Sprint-1/2-mandatory-errors/1.js

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+// trying to create an age variable and then reassign the value by 1
+
+const age = 33;
+age = age + 1;

Sprint-1/2-mandatory-errors/2.js

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+// Currently trying to print the string "I was born in Bolton" but it isn't working...
+// what's the error ?
+
+console.log(`I was born in ${cityOfBirth}`);
+const cityOfBirth = "Bolton";

Sprint-1/2-mandatory-errors/3.js

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+const cardNumber = 4533787178994213;
+const last4Digits = cardNumber.slice(-4);
+
+// The last4Digits variable should store the last 4 digits of cardNumber
+// However, the code isn't working
+// Before running the code, make and explain a prediction about why the code won't work
+// Then run the code and see what error it gives.
+// Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+// Then try updating the expression last4Digits is assigned to, in order to get the correct value

Sprint-1/2-mandatory-errors/4.js

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+const 12HourClockTime = "20:53";
+const 24hourClockTime = "08:53";

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

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+let carPrice = "10,000";
+let priceAfterOneYear = "8,543";
+
+carPrice = Number(carPrice.replaceAll(",", ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+
+const priceDifference = carPrice - priceAfterOneYear;
+const percentageChange = (priceDifference / carPrice) * 100;
+
+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
+
+// 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?
+
+// c) Identify all the lines that are variable reassignment statements
+
+// 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?