/*1- Create a function that takes 3 arguments and returns the sum of the these arguments.*/

function sum(x, y ,c) {

return x+y+c;

}

console.log(sum(2,3,5));

/* 2- Create a function named colorCar that receives a color, and prints out, 'a red car' for example.*/

function colorCar(color){

console.log("a %o car", color);

}

colorCar("red");

/* 3- Create an object and a function that takes the object as a parameter and prints out all of its properties and values.*/

const myDetails = {

Name : "Mosleh",

Age : 30,

Hoppies: ["bascketball" , "movies"]

}

function aboutMe(myDetails){

return console.log(myDetails);

}

aboutMe(myDetails);

// I tried also to get this result using for loop

// for (let key in myDetails){

// console.log(key + ": " +myDetails[key]);

// }

/* 4-Create a function named vehicleType that receives a color, and a code, 1 for car, 2 for motorbike. And prints 'a blue motorbike' for example when called as vehicleType("blue", 2)*/

function vehicleType(color, code){

if (code === 1){

console.log("a %o car", color )

}else if (code ===2)

console.log("a %o motorbike", color)

}

vehicleType("blue",1);

vehicleType("red",2);

/* 5- Can you write the following without the if statement, but with just as a single line with console.log(...);?

if (3 === 3) {

console.log("yes");

} else {

console.log("no");

}*/

switch (3===3){

case (true):

console.log('Yes');

break;

default:

console.log('No');

}

// using single line

console.log((3===3 ? 'Yes' :'No'));

/* 6- Create a function called vehicle, like before, but takes another parameter called age, so that vehicle("blue", 1, 5) prints 'a blue used car'*/

function vehicle(color, code, age){

if (code === 1 && age > 0 ){

console.log("a %o used car", color);

} else if (code ===2 && age > 0){

console.log("a %o used motorbike", color);}

else if (code ===1 && age === 0){

console.log("a %o new motorbike", color);}

else if (code ===2 && age === 0){

console.log("a %o new motorbike", color);}

}

vehicle("blue",1,0);

vehicle("red",1,1);

/* 7- Make a list of vehicles, you can add "motorbike", "caravan", "bike", or more.*/

let myVehicles = ["motorbike", "caravan", "bike","car"];

/* 8- How do you get the third element from that list?*/

console.log(myVehicles[2]); // third element has index 2

/* 9- Change the function vehicle to use the list of question 7. So thxat vehicle("green", 3, 1) prints "a green new bike".*/

let i=0;

function vehicles(color,age,i){

if (age > 0 ){

console.log("a %o used %o",color,myVehicles[i])

}

else if ( age === 0 )

console.log ("a %o new %o",color,myVehicles[i] )

}

vehicles("green",0,2);

/* 10- Use the list of vehicles to write an advertisement. So that it prints something like: "Amazing Joe's Garage, we service cars, motorbikes, caravans and bikes."*/

function advertisement (arr) {

let first = myVehicles.slice(0, myVehicles.length - 1);

let last = myVehicles.slice(-1);

return first.join('s, ') + 's & ' + last+'s';

}

console.log("Amazing Joe's Garage, we service "+advertisement(myVehicles));

/*11- What if you add one more vehicle to the list, can you have that added to the advertisement without changing the code for question 10?*/

myVehicles.push("mopid");

console.log("Amazing Joe's Garage, we service "+advertisement(myVehicles));

/*12- Create an empty object.*/

let firstMethod ={};

let secondMethod = new Object();

console.log(firstMethod);

console.log(secondMethod);

/* 13- Create an object that contains the teachers that you have had so far for the different modules.*/

teachers=[{

Name: 'Rob',

language: 'HTML/CSS',

},{

Name: 'Philipp',

language: 'HTML/CSS',

},{

Name: 'Unmes',

language: 'CLI',

},{

Name: 'Yash',

language: 'Javascript1',

}]

console.log(teachers);

/*14- Add a property to the object you just created that contains the languages that they have taught you.*/

let teachers1={

teacher: 'Rob, Philipp, Unmesh, Yash',

languages:'HTML, CSS, CLI, JS',

}

console.log(teachers1);

/*15- Test the following:*/

let x = [1, 2, 3];

let y = [1, 2, 3];

let z = y;

// What do you think will happen with

// x == y

console.log(x == y); // false

// x === y

console.log(x === y); //false

// z==y

console.log(z == y); // true

// z==x

console.log(z == x); // false

// Explanation:

// - Arrays are compared by their reference.

// - That comparison checks if the array point to the same location in memory (if yes then returns true otherwise return false)

// - x & y are arrays with exactly the same elements and order but each one refer to diffierent instance.`

// -> as a result ( x == y, x === y, z == x) all returns false

// - On the other hand y & z both refer to the same instance.

// -> as a result (z === y) returns true

/*16- Take a look at the following code:*/

let o1 = { foo: "bar" };

let o2 = { foo: "bar" };

let o3 = o2;

/* - Show that changing o2 changes o3 (or not) and changing o1 changes o3(or not).*/

// Explanation:

//Both o2 and o3 are pointing to the same object which means that change o2 will definitely lead to change o3

//In the other hand o1 is another object and point to another location in the memory so the modification of o1 doesn't effect o3

/* - Does the order that you assign (o3 = o2 or o2 = o3) matter?*/

// Explanation:

//- const o3 = o2;

// -> This statement is pointing 03 to o2 which is already declared and initialized.

//- const 02 = 03;

// -> Means that we redeclare a variable which is return SyntaxError

//- o2 = o3

// -> Means that o2 is pointing to not declared object(03) which result in ReferenceError: s3 is not defined

/* 17- What does the following code return? (And why?)

let bar = 42;

typeof typeof bar;*/

let bar = 42;

console.log( typeof typeof bar) // return "string"

// what happened is the following:

typeof bar // coerce the variable to "number" which is string

console.log(typeof bar)

typeof "number" // return the data type of the "number"

console.log(typeof "number")