London | 26 ITP May | Sayeed Hussain | Sprint 1 | Coursework

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

@@ -4,3 +4,5 @@ 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
+
+//  Line 3 increases the number by one and reassigns the new value to count, which stored 0 .

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

@@ -7,5 +7,8 @@ let lastName = "Johnson";
 
 let initials = ``;
 
-// https://www.google.com/search?q=get+first+character+of+string+mdn
+let initials = `${firstName.charAt(0)} ${middleName.charAt(0)} ${lastName.charAt(0)}`;
+
+console.log(initials);
 
+// https://www.google.com/search?q=get+first+character+of+string+mdn

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

@@ -12,12 +12,15 @@
 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}`);
+// 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 = ;
+const dir = filePath.slice(0, lastSlashIndex + 1);
+const ext = filePath.slice(filePath.lastIndexOf("."));
 
-// https://www.google.com/search?q=slice+mdn
+// console.log(ext);
+
+// https://www.google.com/search?q=slice+mdn
+// console.log(dir);

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

@@ -7,3 +7,11 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // 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
+
+// console.log(num);
+
+// 1) Num represent a randomly  generated whole  number between maximum and minimum //
+
+// 2) Firstly, Math.random create a random number between 0 to 1 then using a maximum and minimum,which gives us range.
+//  Multiplying them create a random number inside that range.  Math.floor remove decimal parts and give us whole number
+//  finally we add minimum number ( + minimum),which start from  a minimum value. Therefore num represent a whole number.

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

@@ -1,2 +1,4 @@
 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?
+We don't want the computer to run these 2 lines - how can we solve this problem?
+
+//  We comment them using slash(//) where human can read and computer can't read because it is not a code or translated into code// 

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

@@ -1,4 +1,5 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
 age = age + 1;
+// console.log(age);

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

@@ -1,5 +1,6 @@
 // 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";
+
+console.log(`I was born in ${cityOfBirth}`);

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

@@ -1,5 +1,7 @@
-const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+let cardNumber = 4533787178994213;
+const ToString = cardNumber.toString();
+let last4Digits = ToString.slice(-4);
+console.log(last4Digits);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working

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

@@ -1,2 +1,3 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const HourClockTime = "8:53pm";
+const hourClockTime = "20:53";
+// console.log(HourClockTime);

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

@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -20,3 +20,9 @@ console.log(`The percentage change is ${percentageChange}`);
 // 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?
+
+//  1) five function call there including log function .Lines 4 has two function and lines 5 has two function   .
+// 2 ) problem was line number 5 where comma was missing.
+//  3) reassignment statement lines are 4 and 5.
+//  4) declaration lines are 1,2,7 and 8
+// 5) line number 4, first it is removing commas using replaceAll then converting string to number for calculation.

Sprint-1/3-mandatory-interpret/2-time-format.js

@@ -1,5 +1,5 @@
 const movieLength = 8784; // length of movie in seconds
-
+// 9237,  8784, -5897...
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
 
@@ -23,3 +23,10 @@ console.log(result);
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+
+// a) there are 6 variable declaration.
+// b) there is zero function call . (only one is console.log but it is not part code execution)
+// c)represents the number of seconds left over after converting the movie length into whole minutes.
+// d) It calculates how many whole minutes are in the movie after taking away extra second that don't make full minutes.
+//  e) it represents time format like hours : minutes: second and I think MovieLengthDuration or short MovieDuration
+// I think all value will work except negative value because negative value gives negative outcome.

Sprint-1/3-mandatory-interpret/3-to-pounds.js

@@ -25,3 +25,10 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+
+// line 1 creating a string containing price in pence and this is starting value that programme will convert into pound.
+// line 3 removing p from the end of 399p because p is not needed when converting into pound or pence.
+// line 8 making sure string  has at least 3 digit by adding zero if needed and this makes easier to separate pound and pence consistently.
+// line 9 extract everything except last two digit .
+// line 14 extract last two digit and padEnd() ensures the pence part always has 2 digits.
+// line 18 to print value for checking .

Sprint-1/4-stretch-explore/chrome.md

@@ -12,7 +12,11 @@ invoke the function `alert` with an input string of `"Hello world!"`;
 
 What effect does calling the `alert` function have?
 
+1. alert function display a pop-up message box in the browser containing text "hello world"
+
 Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
 
 What effect does calling the `prompt` function have?
 What is the return value of `prompt`?
+
+2. calling a prompt display a pop-up message box and ask for user input and prompt return a text entered by user as string.

Sprint-1/4-stretch-explore/objects.md

@@ -6,11 +6,18 @@ Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
 
+answer: it shows only log function itself.
+
 Now enter just `console` in the Console, what output do you get back?
+answer: the output is console object .it shows available function/ method inside console object.
 
 Try also entering `typeof console`
+Answer: this shows that console is object.
 
 Answer the following questions:
 
 What does `console` store?
+answer: this one store an object that contain method used to interact with browser developer console.
+
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+Answer : this one let us access to log function that store console object. `.` this one is a dot operator used to access something inside object . console.assert means accessing the assert method from the console object.