Code Reading

Question 1

const fullName: string = ‘Cody Miller’

Answer 1

The string ‘Cody Miller’ is being assigned to the variable fullName of type string

Question 2

const isCool: boolean = true;

Answer 2

The boolean value true is being assigned to the variable isCool of type boolean

Question 3

const totalPets: number = 1000;

Answer 3

The number 1000 is being assigned to the variable totalPets of type number

Question 4

console.log(‘value of fullName:’, fullName);

Answer 4

The log method of the console object is being called with two arguments: The string value of fullName and the value of the variable fullName of type string.

Question 5

const area: number = width * height;

Answer 5

The result of the expression width times height, both of type number, is being assigned to the variable area of type number.

Question 6

motto += ‘ is the GOAT’;

Answer 6

The string value of the variable motto is being concatenated with ‘ is the GOAT’, and the result is being reassigned to the variable motto of type string.

Question 7

const bio: string = My name is ${firstName} ${lastName} and I am ${age} years old.;

Answer 7

A template literal with the variables firstName, lastName, and age is being interpolated and assigned to the variable bio of type string.

Question 8

const student: { firstName: string, lastName: string } = {
firstName: ‘Luke’,
lastName: ‘Skywalker’
};

Answer 8

// A TypeScript object is being assigned to the variable student with a firstName property of type string and a lastName property of type string.
// the string Luke is being assigned to the property firstName

Question 9

const fullName: string = student.firstName + ‘ ‘ + student.lastName;

Answer 9

The firstName property of the student object is being concatenated with a space, and then with the lastName property of the student object. The result is assigned to the variable fullName of type string.

Question 10

const colors: string[] = [‘red’, ‘white’, ‘blue’];

Answer 10

An array of strings [‘red’, ‘white’, ‘blue’] is being assigned to the variable colors of type array of strings.

Question 11

console.log(‘value of colors[0]:’, colors[0])

Answer 11

The log method of the console object is being called with two arguments:a string, and colors at 0.

Question 12

colors[2] = ‘green’;

Answer 12

The string ‘green’ is being assigned to colors at 2

Question 13

function convertMinutesToSeconds(minutes: number): number {
const seconds: number = minutes * 60;
return seconds;
}

Answer 13

A function named convertMinutesToSeconds is being defined with one parameter minutes of type number. It returns a value of type number.

Question 14

const convertMinutesToSecondsResult: number = convertMinutesToSeconds(5);

Answer 14

The function convertMinutesToSeconds is being called with the argument 5, and the returned value of that call is being assigned to the variable convertMinutesToSecondsResult of type number.

Question 15

function getArea(width: number, height: number): number {
const area: number = width * height;
return area;
}

Answer 15

A function named getArea is being defined with two parameters: width and height, both of type number. It returns a value of type number.

Question 16

const getAreaResult: number = getArea(17, 42);

Answer 16

The function getArea is being called with two arguments: 17 and 42, both of type number. The returned value is being assigned to the variable getAreaResult of type number.

Question 17

function isUnderFive(number: number): boolean {
if (number < 5) {
return true;
} else {
return false;
}
}

Answer 17

A function named isUnderFive is being defined with one parameter number of type number. It returns a value of type boolean.

Question 18

function recommendMovie(genre: string): string {
switch (genre) {
case ‘action’:
return ‘Die Hard’;
// other cases…
}
}

Answer 18

A function named recommendMovie is being defined with one parameter genre of type string. It returns a value of type string.

Question 19

const doggo: { bork: () => string; lick: () => string } = {
bork: function () {
return ‘bork! bork! bork!’;
},
lick: function () {
return ‘mlem’;
},
};

Answer 19

// An object with two methods, ‘bork’ and ‘lick’, both of type ‘function that returns a string’, is being assigned to the variable ‘doggo’.
// The ‘doggo’ object has a ‘bork’ property, which is a function returning a string, and a ‘lick’ property, which is also a function returning a string.
// The ‘bork’ method is being defined as a function that takes no parameters and returns the string ‘bork! bork! bork!’.
// The ‘lick’ method is being defined as a function that takes no parameters and returns the string ‘mlem’.

Question 20

Switch Statement / Case Clause

Answer 20

TBW

Question 21

Conditional Statement

Answer 21

TBW

Question 22

HTML elements

Answer 22

TBW

Question 23

CSS

Answer 23

TBW