JavaScript-from-Beginner-to-Professional/Chapter 4/exercises

//Exercise 1
/*
const test = false;
console.log((test));
if(test){
    console.log("Its True");
}
if(!test){
    console.log("False now");
}

//Exercise 2
let age = 10;
let cost = 0;
let message;
if (age < 3) {
    cost = 0;
    message = "Access is free under three.";
} else if (age >= 3 && age < 12) {
    cost = 5;
    message ="With the child discount, the fee is 5 dollars";
} else if (age >= 12 && age < 65) {
    cost = 10;
    message ="A regular ticket costs 10 dollars.";
} else {
    cost = 7;
    message ="A ticket is 7 dollars.";
}

console.log(message);
console.log("Your Total cost "+cost);



let age = prompt("How old are you?");
age = Number(age);
let message;
if(age >= 21){
    message = "You can enter and drink.";
}else if(age >= 19){
    message = "You can enter but not drink.";
}else{
    message = "You are not allowed in!";
}
console.log(message);


//Exercise 3
const id = true;
const message = (id) ? "Allowed In" : "Denied Entry";
console.log(message);



//Exercise 4
let prize = prompt("Pick a number 0-10");
prize = Number(prize);
let output = "My Selection: ";
switch (prize){
    case 0: 
        output += "Gold ";
    case 1:
        output += "Coin ";
        break;
    case 2:
        output += "Big ";
    case 3:
        output += "Box of ";
    case 4:
        output += "Silver ";
    case 5:
        output += "Bricks ";
        break;
    default:
        output += "Sorry Try Again";
}
console.log(output);


//Project 1
let answer = "Something went wrong";
let question = prompt("Ask me anything");
const randomNumber = Math.floor(Math.random() * 6);
switch (randomNumber) {
    case 0:
        answer = "It will work out";
        break;
    case 1:
        answer = "Maybe maybe not";
        break;
    case 2:
        answer = "Probably not";
        break;
    case 3:
        answer = "Highly likely";
        break;
    default:
        answer = "I don"t know about that";
}
let output = "You asked me " + question + ". I think that " + answer;
console.log(output);


const myArr = ["Rock", "Paper", "Scissors"]; 
let computer = Math.floor(Math.random() * 3); 
let player = Math.floor(Math.random() * 3); 
let message = "player " + myArr[player] + " vs computer " + myArr[computer] + " "; 

if (player === computer) { 
    message += "its a tie"; 
} else if (player > computer) { 
    if (computer == 0 && player == 2) { 
        message += "Computer Wins"; 
    } else { 
        message += "Player Wins"; 
    } 
} else { 
    if (computer == 2 && player == 0) { 
        message += "Player Wins"; 
    } else { 
        message += "Computer Wins"; 
    } 
} 
console.log(message); 



//Question 1

const q = 1;

switch (q) {
    case "1":
        answer = "one";
    case 1:
        answer = 1;
    case 2:
        answer = "this is the one";
        break;
    default:
        answer = "not working";
}
console.log(answer);


let myTime = 9;
let output;
if (myTime >= 8 && myTime < 12) {
    output = "Wake up its morning";
} else if (myTime >= 12 && myTime < 13) {
    output = "go to Lunch";
} else if (myTime >= 13 && myTime <= 16) {
    output = "Go to work";
} else if (myTime > 16 && myTime < 20) {
    output = "Dinner Time";
} else if (myTime >= 22) {
    output = "Time to go to sleep";
} else {
    output = "You should be sleeping";
}
console.log(output);



let today = prompt("pick a number");
today = Number(today);
let output;
switch (today) {
case 0:
  output = "Sunday";
  break;
case 1:
  output = "Monday";
  break;
case 2:
  output = "Tuesday";
  break;
case 3:
  output = "Wednesday";
  break;
case 4:
  output = "Thursday";
  break;
case 5:
  output = "Friday";
  break;
case 6:
  output = "Saturday";
  break;
default:
  output = "Not found";
}
console.log("Today is "+output);



let val = 100;
let message = (val > 100) ? "${val} was greater than 100" : "${val} was LESS or Equal to 100";
console.log(message);
let check = (val % 2) ? "Odd" : "Even";
check = "${val} is ${check}";
console.log(check);

let a = 5; 

let b = 10; 

let c = 20; 

let d = 30; 

console.log(a > b || b > a); 

console.log(a > b && b > a); 

console.log(d > b || b > a); 

console.log(d > b && b > a); 



let age = prompt("How old are you?");
age = Number(age);
if (!age) {
    age = prompt("Enter a Number?");
}
let message;
if (age >= 21) {
    message = "You are " + age + " and allowed to come in and drink.";
} else if (age >= 18) {
    message = "You are " + age + "  and allowed to come in but NOT drink.";
} else {
    message = "You are NOT allowed in.  Sorry you are only " + age + " ";
}
console.log(message);

let val = prompt("what number?");
val = Number(val);
let num = 100;
let message = "nothing";
if (val > num) {
    message = val + "  was greater than " + num;
} else if (val == num) {
    message = val + "  was equal to " + num;
} else {
    message = val + " is less than " + num;
}
console.log(message);

let person = prompt("Enter a name?");
let message;
switch (person) {
    case "John" :
    case "Larry" :
    case "Jane" :
    case "Laurence" :
    message = person +" is my friend";
    break;
    default :
    message = "I don\"t know "+person;
}
console.log(message);

*/

const userNames = ["Mike", "John", "Larry"]; 
const userInput = "John"; 
let htmlOutput = ""; 
if (userNames.indexOf(userInput) > -1) { 
    htmlOutput = "Welcome, that is a user"; 
} else { 
    htmlOutput = "Denied, was not a usernot true "; 
} 
console.log(htmlOutput + ":, " + userInput);