practiceJS.js

// strings and manipulation of them
// var message = prompt("Enter your message.");
// var used = message.length;

// alert("You have used " + used + " characters. You have " + 180-used + " characters left.");
// alert("Your new message is " + message.slice(0, 181));

// var name = prompt("Enter your name.");
// var newname;

// var firstLetter= name.slice(0,1).toUpperCase();
// var restOfName = name.slice(1,name.length).toLowerCase();
// newname = firstLetter + restOfName;
// alert("Hello " + newname + ", Welcome to the course.");


// practicing multiple operators and order of operations
// var dogAge = prompt("Enter your dog's age.");
// var dogHumanAge = (dogAge - 2) * 4 + 21;
// alert("Your " + dogAge + " year old dog is "+ dogHumanAge +" years old in human age.");


// practicing functions -- with parameters
// function getMilk(money) {
//     var costOneBottle = 1.50;
//     var buyBottles = parseInt(money / 1.50);
//     console.log("leaveHouse");
//     console.log("moveRight");
//     console.log("moveRight");
//     console.log("moveUp");
//     console.log("moveUp");
//     console.log("moveUp");
//     console.log("moveUp");
//     console.log("moveRight");
//     console.log("moveRight");
//     console.log("buy " + buyBottles + " bottles of milk.");
//     console.log("moveLeft");
//     console.log("moveLeft");
//     console.log("moveDown");
//     console.log("moveDown");
//     console.log("moveDown");
//     console.log("moveDown");
//     console.log("moveLeft");
//     console.log("moveLeft");
//     console.log("enterHouse");
// }

// getMilk(5.50);


// practicing random nums
// prompt("What is your name?");
// prompt("What is your crush's name?");

// var loveScore = Math.random() * 100;
// loveScore = Math.floor(loveScore) + 1;

// if (loveScore > 70){
//   alert("Your love score is " + loveScore + "%. You love each other like Kanye loves Kanye.");
// } else{
//   alert("Your love score is " + loveScore + "%.");
// }


// simple program for practicing arrays
var name = prompt("Enter your name.");
var guests = ["john", "mary", "dawn"];

if (guests.includes(name)){
  alert("Welcome " + name + "!");
} else {
  alert("nah, get outta here.");
}

// print 1-100, multiple of 3 - fizz, 5 - buzz, both- FizzBuzz

for (let i = 1; i < 101; i++){
  if ((i % 3 === 0) && (i%5===0)){
    console.log("FizzBuzz");
  }
  else if (i % 3 === 0){
    console.log("Fizz");
  }
  else if (i%5===0){
    console.log("Buzz");
  } else{
    console.log(i);
  }
  
}


// var heading = document.lastElementChild.firstElementChild
// heading.innerHTML="Good bye";


// document.querySelector("ul").lastElementChild.innerHTML = "Jessieee";


// var items = document.querySelectorAll("li");
// undefined
// items[0].firstElementChild.color = "red";

// items[0].firstElementChild
// <a href=​"https:​/​/​wwww.google.com">​Google​</a>​
// items[0].firstElementChild.style.color = "red";

// working with higher order functions
function add(num1, num2){
  return num1+num2;
}

function divide(num1, num2){
  return num1/num2;
}

function multiply(num1, num2){
  return num1*num2;
}

function subtract(num1, num2){
  return num1+num2;
}

function calculator(num1, num2, operator){
  return operator(num1, num2);
}

// working with data structure (dictionary)
// var houseMaid1 = {
//   name: "Maria",
//   yearofExperience: 12,
//   duties: ["bathroom", "lobby", "bedroom"]
  
// }

// houseMaid1.name;

// constructor function (acts like a class - i think)
function HouseMaid(name, yearsofExperience, duties){
  this.name = name;
  this.yearsofExperience = yearsofExperience;
  this.duties = duties;
  this.clean = function () {
    alert("Cleaning in progress...");
  }
}

var houseMaid2 = new HouseMaid("Mary", 20, ["stairs", "kitchen"]);

houseMaid2.clean();