msb-public
/
30-Days-Of-JavaScript
mirror of https://github.com/Asabeneh/30-Days-Of-JavaScript
1
0
Code Issues Projects Releases Wiki Activity

big exercises for day 3, lots of functions :)

Browse Source
pull/862/head
Dzykas 2 years ago
parent 0e8863cc4b
commit f44e5814a7
3 changed files with 185 additions and 0 deletions
Show Stats Download Patch File Download Diff File

38
solutions/day-03/index.html
Unescape View File

@ -0,0 +1,38 @@
<!DOCTYPE html>
<html lang="en">
<head>
<title>30DaysOfJavaScript: Day 03</title>
</head>
<body style="background-color: black; color: white;">
<h1>30DaysOfJavaScript: Day 03</h1>
<h2>Booleans, undefined, null, date object</h2>
<!-- import your scripts here -->
<script src="main.js"></script>
<script src="level2.js"></script>
</body>
<style>
button{
color: white;
background-color: black;
padding: 5px;
margin: 5px;
border-radius: 7px;
}
</style>
<button onclick="triangleA()">Area of a triangle</button><br>
<button onclick="triangleP()">Perimeter of a triangle</button><br>
<button onclick="rectPA()">Perimeter and area of a rectangle</button><br>
<button onclick="circleA()">Area of a circle</button><br>
<button onclick="calcSlope()">Calculate slope</button><br>
<button onclick="weeklyEarning()">Calculate weekly earnings</button><br>
<button onclick="nameLength()">Is your name long ?</button><br>
<button onclick="compareNames()">Is your first name longer than your last name ?</button><br>
<button onclick="ageCompare()">Age compare</button><br>
<button onclick="canDrive()">Are you allowed to drive ?</button><br>
<button onclick="lifeLength()">How many seconds have you lived ?</button><br>
<button onclick="calendar()">What's the time?</button><br>
</html>

98
solutions/day-03/level2.js
Unescape View File

@ -0,0 +1,98 @@
function triangleA() {
let base = prompt("Input the triangles base length:");
let height = prompt("Input the triangles base height:");
let area = 0.5 * base * height;
alert(`The area of the triangle is ${area}`);
}
function triangleP() {
let a = prompt("Enter the length of side a");
let b = prompt("Enter the length of side b");
let c = prompt("Enter the length of side c");
let p = parseInt(a) + parseInt(b) + parseInt(c);
alert(p);
}
function rectPA() {
let width = parseInt(prompt("Enter the width of the rectangle."));
let height = parseInt(prompt("Enter the height of the rectangle."));
let p = 2 * (width + height);
let a = width * height;
alert(`The perimeter of the rectangle is ${p}\nThe area of the rectangle is ${a}`);
}
function circleA() {
const PI = 3.14;
let r = parseInt(prompt("Enter the radius of the circle."));
let a = PI * (r * r);
alert(`The area of the circle is ${a}`);
}
function calcSlope() {
let x1 = parseInt(prompt("Enter the x position of the first point."));
let y1 = parseInt(prompt("Enter the y postiion of the first point"));
let x2 = parseInt(prompt("Enter the x postiion of the second point"));
let y2 = parseInt(prompt("Enter the y postiion of the second point"));
let m = (y2-y1)/(x2-x1);
alert(`The slope between points (${x1},${y1}) and (${x2},${y2}) is ${m}`)
}
function weeklyEarning() {
let h = parseInt(prompt("Enter hours"));
let rate = parseInt(prompt("Enter rate"));
let earning = h * rate;
alert(`Your weekly earning is ${earning}`);
}
function nameLength() {
let name = prompt("Enter your name")
if (name.length > 7){
alert("Your name is long!")
}
else {
alert("Your name is short!")
}
}
function compareNames() {
let firstName = prompt("Enter your first name.")
let lastName = prompt("Enter your last name.")
if (firstName.length > lastName){
alert(`Your first name, ${firstName} is longer than your family name, ${lastName}`)
}
else {
alert(`Your first name, ${firstName} is not longer than your family name, ${lastName}`)
}
}
function ageCompare() {
let myAge = 250;
let yourAge = 25;
alert(`I am ${myAge - yourAge} years older than you.`);
}
function canDrive() {
let age = parseInt(prompt("Enter birth year."));
if (age > 18){
alert(`You are ${age}. You are old enough to drive.`);
}
else{
alert(`You are ${age}. You will be allowed to drive after ${18 - age} years.`);
}
}
function lifeLength() {
let age = parseInt(prompt("Enter the number of years you have lived"));
let sec = age * 365 * 24 * 60 * 60;
alert(`You have lived ${sec} seconds.`);
}
function calendar() {
const now = new Date();
const currentYear = now.getFullYear();
const month = now.getMonth() + 1;
const date = now.getDate();
const hours = now.getHours();
const minutes = now.getMinutes();
alert(`${currentYear}-${month}-${day} ${hours}:${minutes}`)
}

49
solutions/day-03/main.js
Unescape View File

@ -0,0 +1,49 @@
let firstName = "Eligijus"
let lastName = "Dzikavicius"
let country = "Lithuania"
let city = "Kupiskis"
let age = "17"
let isMarried = false
let year = "2023"
console.log(parseInt("10"))
console.log(parseInt("9.8"))
let truthy1 = 12 // truthy
let truthy2 = "string" // truthy
let truthy3 = true // truthy
let falsy1 = 0 // falsy
let falsy2 = "" // falsy
let falsy3 = null // falsy
console.log(4 > 3) // true
console.log(4 >= 3) // true
console.log(4 < 3) // false
console.log(4 <= 3) // false
console.log(4 == 4) // true
console.log(4 === 4) // true
console.log(4 != 4) // false
console.log(4 !== 4) // false
console.log(4 != '4') // false
console.log(4 == '4') // true
console.log(4 === '4') // false
console.log("python".length != "jargon".length) // false
// All correct !
const now = new Date()
const currentYear = now.getFullYear()
const month = now.getMonth() + 1
const date = now.getDate()
const day = now.getDay() + 1
const hours = now.getHours()
const minutes = now.getMinutes()
const seconds = now.getSeconds()
const allTime = now.getTime()
console.log(`The current year is ${currentYear}`)
console.log(`The current month is ${month}`)
console.log(`The current date is ${date}`)
console.log(`The current day of the week is ${day}`)
console.log(`The current time is ${hours}:${minutes}:${seconds}`)
console.log(`The amount of seconds passed since Jan 1, 1970 is ${allTime}`)
Write Preview
Loading…
Cancel
Save