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1 change: 1 addition & 0 deletions Sprint-1/1-key-exercises/1-count.js
Original file line number Diff line number Diff line change
Expand Up @@ -4,3 +4,4 @@ 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
// In Line 3, count is a variable, and the = is an assignment operator that stores the result of the operation(Addition)
3 changes: 2 additions & 1 deletion Sprint-1/1-key-exercises/2-initials.js
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,8 @@ 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 = ``;
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

8 changes: 4 additions & 4 deletions Sprint-1/1-key-exercises/3-paths.js
Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,8 @@ 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, filePath.lastIndexOf("/")+1);
const ext =filePath.slice(filePath.indexOf(".")+1);
console.log(dir)
console.log(ext)
// https://www.google.com/search?q=slice+mdn
4 changes: 4 additions & 0 deletions Sprint-1/1-key-exercises/4-random.js
Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,12 @@ const minimum = 1;
const maximum = 100;

const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
console.log(num)

// 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
//The math.Floor method rounds a number to the nearest integer, so using bodmas,
//the expressions are evaluated, the minimum which equals 1 is added to 1 then subtracted from maximum(100), after which it is multiplied by
//a random number between 0-1 exclusive and then rounded down to the nearest integer after which the minimum is added. The values produced ranges from 0-100
4 changes: 2 additions & 2 deletions Sprint-1/2-mandatory-errors/0.js
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
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?
//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?
2 changes: 1 addition & 1 deletion Sprint-1/2-mandatory-errors/1.js
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// trying to create an age variable and then reassign the value by 1

const age = 33;
let age = 33;
age = age + 1;
6 changes: 3 additions & 3 deletions Sprint-1/2-mandatory-errors/2.js
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
// 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}`);
// what's the error ? You cannot access a variable before initialization.
const cityOfBirth = "Bolton";
console.log(`I was born in ${cityOfBirth}`);

3 changes: 2 additions & 1 deletion Sprint-1/2-mandatory-errors/3.js
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
const cardNumber = 4533787178994213;
const cardNumber = '4533787178994213';
const last4Digits = cardNumber.slice(-4);

// The last4Digits variable should store the last 4 digits of cardNumber
Expand All @@ -7,3 +7,4 @@ const last4Digits = cardNumber.slice(-4);
// 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
//It didn't work because the method only works for strings so to make it work the card number should be saved as a string.
4 changes: 2 additions & 2 deletions Sprint-1/2-mandatory-errors/4.js
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
const 12HourClockTime = "8:53pm";
const 24hourClockTime = "20:53";
const TwelveHourClockTime = "8:53pm";
const TwentyFourHourClockTime = "20:53";
11 changes: 8 additions & 3 deletions Sprint-1/3-mandatory-interpret/1-percentage-change.js
Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
let carPrice = "10,000";
let priceAfterOneYear = "8,543";

carPrice = Number(carPrice.replaceAll(",", ""));
priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
carPrice = Number(carPrice.replaceAll(",",""));
priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",",""));

const priceDifference = carPrice - priceAfterOneYear;
const percentageChange = (priceDifference / carPrice) * 100;
Expand All @@ -12,11 +12,16 @@ 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
//The function call are made twice
//line 4, 5,


// 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
//Lines 7 & 8

// d) Identify all the lines that are variable declarations

//Lines 1 & 2
// e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
10 changes: 6 additions & 4 deletions Sprint-1/3-mandatory-interpret/2-time-format.js
Original file line number Diff line number Diff line change
Expand Up @@ -12,14 +12,16 @@ console.log(result);
// For the piece of code above, read the code and then answer the following questions

// a) How many variable declarations are there in this program?

//6
// b) How many function calls are there?

// c) Using documentation, explain what the expression movieLength % 60 represents
//4
// c) Using documentation, explain what the expression movieLength % 60 represents it represents the remainder when movielength is divided by 60
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators

// d) Interpret line 4, what does the expression assigned to totalMinutes mean?
//The expression assigned to totalMinutes means that the remaining seconds are subtracted from the movieLength and then divided by 60 to get the total number of minutes in the movie length.

// e) What do you think the variable result represents? Can you think of a better name for this variable?

//The variable result represents the total time of the movie, in hours minutes and seconds.
// f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer

8 changes: 6 additions & 2 deletions Sprint-1/3-mandatory-interpret/3-to-pounds.js
Original file line number Diff line number Diff line change
@@ -1,19 +1,23 @@
const penceString = "399p";
//initializes a string variable with the value "399p"

const penceStringWithoutTrailingP = penceString.substring(
0,
penceString.length - 1
);

//initializes a string variable by taking a substring of penceString up until the part where the p is, so without the p
const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
//it initializes a string variable by padding the start of the pencestringwithoutrailing with 0 if the length is less than 3
const pounds = paddedPenceNumberString.substring(
0,
paddedPenceNumberString.length - 2
);
//it initializes a string variable by taking all the strings except from the last two letters

const pence = paddedPenceNumberString
.substring(paddedPenceNumberString.length - 2)
.padEnd(2, "0");
//initializes a string variable by taking a substring from paddedpencenumberstring except from the last two letters and padding the end wih 0, if it is less than 2

console.log(`£${pounds}.${pence}`);

Expand All @@ -24,4 +28,4 @@ console.log(`£${pounds}.${pence}`);
// Try and describe the purpose / rationale behind each step

// To begin, we can start with
// 1. const penceString = "399p": initialises a string variable with the value "399p"
// 1. const penceString = "399p": initializes a string variable with the value "399p"
4 changes: 3 additions & 1 deletion Sprint-1/4-stretch-explore/chrome.md
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Expand Up @@ -11,8 +11,10 @@ In the Chrome console,
invoke the function `alert` with an input string of `"Hello world!"`;

What effect does calling the `alert` function have?

A pop up notification saying 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?
It brings up a input tab to enter an answer
What is the return value of `prompt`?
the input entered
12 changes: 7 additions & 5 deletions Sprint-1/4-stretch-explore/objects.md
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Expand Up @@ -5,12 +5,14 @@ In this activity, we'll explore some additional concepts that you'll encounter i
Open the Chrome devtools Console, type in `console.log` and then hit enter

What output do you get?

undefined/ f log() native code
Now enter just `console` in the Console, what output do you get back?

a list of all console types and how to use them
Try also entering `typeof console`

object
Answer the following questions:

What does `console` store?
What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
What does `console` store? The console object provides access to the debugging console. It stores text and data explicitly sent to it using methods like console.log() or console.info()
What does the syntax `console.log` or `console.assert` mean?
The assert() method writes a message to the console if an expression evaluates to false. The log() method writes (logs) a message to the console.
In particular, what does the `.` mean?
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