How to enable button if all divs are selected in vanilla javascript? - javascript

I have some divs generated dynamically. Once all the divs are selected submit button has to be enabled, can someone please help me?
let card = document.getElementsByClassName('card');
let allSelected = document.querySelectorAll('selected');
let btn = document.getElementsByClassName('btn');
for (var i = 0; i < card.length; i++) {
card[i].addEventListener('click', function(e) {
e.target.classList.add('selected');
})
}
.card.selected{
background: #0173fb;
}
<section class='container'>
<ul class="cards">
<li class="cardItm">
<div class="card">
card items
</div>
</li>
</ul>
<button class='btn'>Submit</button>
</section>
let card = document.getElementsByClassName('card');
let allSelected = document.querySelectorAll('selected');
let btn = document.getElementsByClassName('btn');
for (var i = 0; i < card.length; i++) {
card[i].addEventListener('click', function(e) {
e.target.classList.add('selected');
})
}
In this code I am adding 'selected' class for the div onclick. I want this in pure javascript.. no jquery or any other library.
Thanks in advance.


try like this. Pure javascript.
document.addEventListener("DOMContentLoaded", function(event) {
document.getElementsByClassName('btn')[0].setAttribute("disabled","true");
});
let card = document.getElementsByClassName('card');
let btn = document.getElementsByClassName('btn');
for (var i = 0; i < card.length; i++) {
card[i].addEventListener('click', function(e) {
e.target.classList.toggle('selected');
if(card.length === document.getElementsByClassName('selected').length){
btn[0].removeAttribute("disabled");
}
else{
btn[0].setAttribute("disabled","true");
}
})
}
.card{
padding: 8px;
border: 1px solid #eee;
cursor: pointer;
}
ul, li{
list-style: none;
}
.card.selected{
background-color: rgb(155,155,155);
}
.btn{
padding: 10px;
margin: 10px;
}
<body>
<section class='container'>
<ul class="cards">
<li class="cardItm">
<div class="card">
card items 1
</div>
<div class="card">
card items 2
</div>
<div class="card">
card items 3
</div>
</li>
</ul>
<button class='btn'>Submit</button>
</section>
</body>
Or you can add eventListener without for. Like below:
let card = document.getElementsByClassName('card');
let btn = document.getElementsByClassName('btn');
document.body.addEventListener('click', function(e) {
if(e.target.classList.contains('card')){
e.target.classList.toggle('selected');
if(card.length === document.getElementsByClassName('selected').length){
btn[0].removeAttribute("disabled");
}
else{
btn[0].setAttribute("disabled","true");
}
}
});


Compare the available divs with the selected divs and enable the button if it matches.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<style>
div{
height: 10px;
background-color: red;
margin-bottom: 10px;
}
.selected{
background-color: blue;
}
</style>
</head>
<body>
<div class="card"></div>
<div class="card"></div>
<div class="card"></div>
<div class="card"></div>
<button class="btn" disabled>Click</button>
<script>
let card = document.getElementsByClassName('card');
let btn = document.getElementsByClassName('btn');
for (var i = 0; i < card.length; i++) {
card[i].addEventListener('click', function(e) {
// add seclected class to clicke div
e.target.classList.add('selected');
// get all selected/clicked divs
let allSelected = document.querySelectorAll('.selected');
// compare available divs with selected divs
if(card.length === allSelected.length){
console.log("Enable button", btn[0])
btn[0].onclick = () => {
alert("Button clicked");
};
// enable button
btn[0].disabled = false;
}
});
}
</script>
</body>
</html>
EDIT: Troubleshooting (https://github.com/Bhanumathi-a/cards)
Your problem with your code is that you add the "selected" class on sub elements too! `` When you add a console log on the event handler you see that there are other elements than the divs get selected which gives you the filled array that matches the length of the available divs:
You can clearly see that the array contains more elements than only divs.
To fix this, find the nearest div.card element from the clicked children:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Member FDIC</title>
<link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Roboto', sans-serif;
margin: 0;
padding: 0;
}
.container {
width: 100%;
margin: 0 auto;
min-width: 360px;
}
header {
display: block;
}
a.logo {
display: inline-block;
font-size: 50px;
color: #0173fb;
text-decoration: none;
padding: 15px;
}
nav {
display: inline-block;
}
.loanDetails {
background: #f8f8f8;
display: flex;
}
.cardBlk {
display: flex;
flex-wrap: wrap;
justify-content: space-between;
}
.cards {
display: flex;
flex-wrap: wrap;
list-style: none;
margin: 0;
padding: 0;
}
.cardItm {
display: flex;
padding: 10px;
}
#media(min-width:1240px) {
.container {
max-width: 1140px;
}
.cardItm {
width: 24%;
}
}
#media(min-width:1920px) {
.container {
max-width: 1820px;
}
.cardItm {
width: 33%;
}
}
.card {
background: #f8f8f8;
color: #2a2b2d;
border-radius: 10px;
padding: 15px 15px 30px 15px;
box-sizing: border-box;
width: 100%;
display: block;
overflow: hidden;
position: relative;
text-align: center;
cursor: pointer;
justify-content: center;
}
.card .info, .card .checked {
height: 39px;
width: 39px;
position: absolute;
top: 10px;
right: 10px;
border-radius: 50%;
}
.card .info {
background: url(assets/exclamation.png) no-repeat 0 0;
}
.card .checked {
background: url(assets/checked\ active.png) no-repeat 0 0;
}
.card img {
width: auto;
height: auto;
max-width: 50px;
margin: 25px auto;
}
.card.selected, .card:hover {
background: #0173fb;
color: #fff;
}
.card:hover .info, .card.selected .info {
background-image: url(assets/exclamation\ white.png);
}
.card:hover .checked, .card.selected .checked {
background-image: url(assets/checked\ inactive.png);
}
.btnBlk {
text-align: center;
display: block
}
.btn {
background: #0173fb;
border-radius: 25px;
padding: 10px 25px;
color: #fff;
text-align: center;
border: 1px solid #0173fb;
margin: 10px auto;
cursor: pointer;
display: inline-block;
text-transform: uppercase;
}
.btn:disabled {
background: #9ac5fb;
border-color: #9ac5fb;
cursor: default;
}
</style>
</head>
<body>
<header>
<div class="container">
Logo
<!-- <nav class="nav">
<ul>
<li>Dashboard</li>
<li>Welcome, John Doe</li>
</ul>
</nav> -->
</div>
</header>
<main>
<header class="loanDetails">
<div class="container">
loan
<progress value="30" max="100" id=progress>30%</progress>
</div>
</header>
<section class='container'>
<ul class="cards">
<li class="cardItm">
<div class="card 1">
<span class="checked"></span>
<img src="assets/location.png" alt="">
<div>
<h2>Get started</h2>
<span>(100% completed)</span>
</div>
</div>
</li>
<li class="cardItm">
<div class="card 2">
<span class="info"></span>
<img src="assets/property.png" alt="">
<div>
<h2>Get started</h2>
<span>(Not Started)</span>
</div>
</div>
</li>
<li class="cardItm">
<div class="card">
<span class="info"></span>
<img src="assets/income.png" alt="">
<div>
<h2>Get started</h2>
<span>(Not Started)</span>
</div>
</div>
</li>
<li class="cardItm">
<div class="card">
<span class="checked"></span>
<img src="assets/assets.png" alt="">
<div>
<h2>Get started</h2>
<span>(50% completed)</span>
</div>
</div>
</li>
<li class="cardItm">
<div class="card">
<span class="checked"></span>
<img src="assets/real estate.png" alt="">
<div>
<h2>Get started</h2>
<span>(70% completed)</span>
</div>
</div>
</li>
<li class="cardItm">
<div class="card">
<span class="info"></span>
<img src="assets/declarations.png" alt="">
<div>
<h2>Get started</h2>
<span>(90% completed)</span>
</div>
</div>
</li>
<li class="cardItm">
<div class="card">
<span class="checked"></span>
<img src="assets/e-concent.png" alt="">
<div>
<h2>Get started</h2>
<span>(Not Started)</span>
</div>
</div>
</li>
</ul>
<div class="btnBlk">
<button class="btn" id="submitBtn" disabled>Submit Application</button>
</div>
</section>
</main>
<footer>
</footer>
<script>
let card = document.getElementsByClassName('card');
let btn = document.getElementsByClassName('btn');
let progress = document.getElementById('progress');
for (var i = 0; i < card.length; i++) {
card[i].addEventListener('click', function (e) {
let closest = e.target.closest("div.card");
closest.classList.add('selected');
progress.value = progress.value + 10;
let allSelected = document.querySelectorAll('div.selected');
if (card.length === allSelected.length) {
btn[0].onclick = () => {
console.log('clicked');
};
btn[0].disabled = false;
}
});
}
</script>
</body>
</html>

Related

Button click open and close function not working

Using Javascript to open and close a navbar but it's not working in my new project
When i use devtools i can see the function active but my nav bar does not open or close. So funny because i've used it for an old project which is working fine. I have no idea why this time it's frustrating. I need your help please if any
This is the js code
let Menupopupup = document.getElementById("dropdownheadernav");
function opendropdownheadernav() {
Menupopupup.classList.add("Openmenudrops");
document.body.style.overflow = "hidden";
}
function closedropdownheadernav() {
Menupopupup.classList.remove("Openmenudrops");
document.body.style.overflow = "auto";
}
This is my HTML
<nav class="firstnavigationbar">
<button id="Showscroll" type="submit" class="barsbutton" onclick="opendropdownheadernav()">
<div class="barbtnimagecontainer" >
<img class="barbtn"
src="./B-NFT-IMGS/Screenshot 2022-11-29 at 07.00.30.png"
height="23"
width="22"
alt=""
/></div></button>
<ul class="firstunorderedlist" id="dropdownheadernav">
<button id="Closescroll" type="button" class="closemenubutton" onclick="closedropdownheadernav()"><span class="closemenuspan">&#x2715</span></button>
This is my Css
.firstunorderedlist {
margin-top: -40px;
display: none;
color: #1e2329;
list-style: none;
line-height: 3.5;
background-color: #fff;
width: 320px;
overflow: hidden;
}

The element UL must be closed with /ul. As for javascript, you need to find the element by id and then use style.display and make it equal to the desired value. I attached the neatified code below. It does what you need and is made shorter.
<!DOCTYPE html>
<html>
<head>
<style>
.firstunorderedlist {
margin-top: -40px;
display: none;
color: #1e2329;
list-style: none;
line-height: 3.5;
background-color: #fff;
width: 320px;
overflow: hidden;
}
</style>
</head>
<body>
<nav class="firstnavigationbar">
<button id="Showscroll" type="submit" class="barsbutton" onclick="openNav()">
<div class="barbtnimagecontainer" >
<img class="barbtn"
src="./B-NFT-IMGS/Screenshot 2022-11-29 at 07.00.30.png"
height="23"
width="22"
alt="">
</div>
</button>
<ul class="firstunorderedlist" id="dropdownheadernav">
<li>Code</li>
<li>Goes</li>
<li>Here</li>
</ul>
<button id="Closescroll" type="button" class="closemenubutton" onclick="openNav()">
<span class="closemenuspan">&#x2715</span>
</button>
<script>
let navOpened = false;
function openNav() {
if (navOpened) {
navOpened = false;
document.getElementById("dropdownheadernav").style.display = 'none';
} else {
navOpened = true;
document.getElementById("dropdownheadernav").style.display = 'initial';
}
}
</script>
</body>
</html>

function myFunction() {
var x = document.getElementById("myLinks");
if (x.style.display === "block") {
x.style.display = "none";
} else {
x.style.display = "block";
}
}
.mobile-container {
max-width: 480px;
margin: auto;
background-color: blue;
height: 500px;
color: white;
border-radius: 10px;
}
.topnav {
overflow: hidden;
background-color: red;
position: relative;
}
.topnav #myLinks {
display: none;
}
.topnav a {
color: white;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
display: block;
}
.topnav a.icon {
background: black;
display: block;
position: absolute;
right: 0;
top: 0;
}
.topnav a:hover {
background-color: #ddd;
color: black;
}
.active {
background-color: #04AA6D;
color: white;
}
<html>
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body>
<body>
<div class="mobile-container">
<div class="topnav">
Navbar
<div id="myLinks">
News
Contact
About
</div>
<a href="javascript:void(0);" class="icon" onclick="myFunction()">
<i class="fa fa-bars"></i>
</a>
</div>
<div style="padding-left:16px">
<h3>Vertical Mobile Navbar</h3>
<p>This example demonstrates how a navigation menu on a mobile/smart phone could look like.</p>
<p>Click on the hamburger menu (three bars) in the top right corner, to toggle the menu.</p>
</div>
</div>
</body>
<html>

How to animate a js filtering

I'm using Bootstrap and I get the JavaScript code for the filterable div elements from W3Schools. It's an easy mode to filter but it's a bit bored without animations.
Because of this, I'm trying to add some animations by CSS or js in my filter code and I don't know how to run it. I tried CSS and js animations but nothing, it's not working.
HTML
<div class="container-fluid">
<div id="myBtnContainer">
<ul>
<li class="list-inline-item"><button class="btn active" onclick="filterSelection('all')">All</button></li>
<li class="list-inline-item"><button class="btn" onclick="filterSelection('category1')">Category1</button></li>
<li class="list-inline-item"><button class="btn" onclick="filterSelection('category2')">Category2</button></li>
</ul>
</div>
<div class="row row-cols-1 row-cols-sm-2 row-cols-lg-3 g-3 pt-2 pb-5">
<div class="col fade-in-image filterDiv category1 show">
<a href="http://localhost:8888/test01/projects/project1/">
<div class="card">
<img width="480" height="320" src="http://localhost:8888/test01/wp-content/uploads/2021/06/img1.jpeg" class="img-fluid wp-post-image" alt="" loading="lazy">
<div class="hover-project">
<h3 class="titol-projecte">Project 1</h3>
<p class="location pb-4">Location 1</p>
<p class="category">Category 1</p>
</div>
</div>
</a>
</div>
<div class="col fade-in-image filterDiv category-2 show">
<a href="http://localhost:8888/test01/projects/project2/">
<div class="card">
<img width="480" height="320" src="http://localhost:8888/test01/wp-content/uploads/2021/06/img2.jpeg" class="img-fluid wp-post-image" alt="" loading="lazy">
<div class="hover-project">
<h3 class="titol-projecte">Project 2</h3>
<p class="location pb-4">Location 2</p>
<p class="category">Category 2</p>
</div>
</div>
</a>
</div>
</div>
</div>
The JavaScript I used:
filterSelection("all")
function filterSelection(c) {
var x, i;
x = document.getElementsByClassName("filterDiv");
if (c == "all") c = "";
// Add the "show" class (display:block) to the filtered elements, and remove the "show" class from the elements that are not selected
for (i = 0; i < x.length; i++) {
w3RemoveClass(x[i], "show");
if (x[i].className.indexOf(c) > -1) w3AddClass(x[i], "show");
}
}
// Show filtered elements
function w3AddClass(element, name) {
var i, arr1, arr2;
arr1 = element.className.split(" ");
arr2 = name.split(" ");
for (i = 0; i < arr2.length; i++) {
if (arr1.indexOf(arr2[i]) == -1) {
element.className += " " + arr2[i];
}
}
}
// Hide elements that are not selected
function w3RemoveClass(element, name) {
var i, arr1, arr2;
arr1 = element.className.split(" ");
arr2 = name.split(" ");
for (i = 0; i < arr2.length; i++) {
while (arr1.indexOf(arr2[i]) > -1) {
arr1.splice(arr1.indexOf(arr2[i]), 1);
}
}
element.className = arr1.join(" ");
}
// Add active class to the current control button (highlight it)
var btnContainer = document.getElementById("myBtnContainer");
var btns = btnContainer.getElementsByClassName("btn");
for (var i = 0; i < btns.length; i++) {
btns[i].addEventListener("click", function() {
var current = document.getElementsByClassName("active");
current[0].className = current[0].className.replace(" active", "");
this.className += " active";
});
}
The CSS i used
.filterDiv {
display: none; /* Hidden by default */
visibility: hidden;
opacity: 0;
}
/* The "show" class is added to the filtered elements */
.show {
display: block;
visibility: visible;
opacity: 1;
}
Thank you!!

Here is one ready example you can use for your code, its pretty amazing in my opinion
<div class="wrap">
<div class="container">
<div class="row">
<div class="twelve columns">
<h4>Filter Programs</h4>
</div>
</div><!-- end of row -->
<div class="row">
<div class="twelve columns">
<div class="programs">
<button class="filter-btn" data-filter="all">All</button>
<button class="filter-btn" data-filter=".undergraduate">Undergraduate</button>
<button class="filter-btn" data-filter=".graduate">Graduate</button>
<button class="filter-btn" data-filter=".phd">PhD</button>
</div>
</div>
</div><!-- end of row -->
<div class="row">
<div class="columns twelve">
<h4>Sort Programs</h4>
</div>
</div><!-- end of row -->
<div class="row">
<div class="columns twelve">
<div class="programs">
<button class="sort-btn" data-sort="default:asc">Default</button>
<button class="sort-btn" data-sort="random">Random</button>
<button class="sort-btn" data-sort="order:asc">Ascending</button>
<button class="sort-btn" data-sort="year:desc order:desc">Descending<span
class="multi">(Multi)</span></button>
</div>
</div>
</div><!-- end of row -->
<div class="row">
<div class="twelve columns">
<h4>Programs List</h4>
</div>
</div><!-- end of row -->
<div class="row">
<div class="twelve columns">
<ul class="courses" id="mix-wrapper">
<li class="mix-target undergraduate" data-order="5" data-year="4">Economics<span>(U)</span></li>
<li class="mix-target graduate" data-order="14" data-year="2">Pharmacology<span>(G)</span></li>
<li class="mix-target graduate" data-order="7" data-year="1">Informatics<span>(G)</span></li>
<li class="mix-target phd" data-order="4" data-year="3">Criminology<span>(P)</span>
</li>
<li class="mix-target undergraduate" data-order="16" data-year="3">Sociology<span>(U)</span></li>
<li class="mix-target undergraduate" data-order="6" data-year="4">Greek<span>(U)</span></li>
<li class="mix-target phd" data-order="1" data-year="3">Astrophysics<span>(P)</span>
</li>
<li class="mix-target undergraduate" data-order="12" data-year="4">Nursing<span>(U)</span></li>
<li class="mix-target undergraduate" data-order="10" data-year="5">Microbiology<span>(U)</span></li>
<li class="mix-target undergraduate" data-order="9" data-year="4">Mathematics<span>(U)</span></li>
<li class="mix-target graduate" data-order="11" data-year="3">Nanoscience<span>(G)</span></li>
<li class="mix-target phd" data-order="2" data-year="2">Biochemistry<span>(P)</span>
</li>
<li class="mix-target phd" data-order="13" data-year="3">Pathology<span>(P)</span>
</li>
<li class="mix-target graduate" data-order="8" data-year="1">Management<span>(G)</span></li>
<li class="mix-target graduate" data-order="3" data-year="2">Biostatistics<span>(G)</span></li>
<li class="mix-target phd" data-order="15" data-year="4"><a href="#">Public
Health<span>(P)</span></a></li>
</ul>
</div>
</div>
</div>
</div>
The CSS:
#import url(https://fonts.googleapis.com/css?family=Alegreya+Sans+SC);
body {
background: #ededed;
font-family: 'Alegreya Sans SC', sans-serif;
}
h4 {
font-size: 21px;
border-radius: 5px;
margin: 0 auto;
text-align: center;
background: #d2d2d2;
color: white;
font-weight: 700;
padding: 3px 0;
}
li {
margin: 0;
}
a {
font-size: 18px;
text-decoration: none;
}
span {
display: block;
font-size: .75em;
font-style: italic;
position: relative;
top: 5px;
}
.multi {
display: inline;
top: 0;
left: 3px;
}
img {
max-width: 100%;
}
.programs,
.courses {
margin: 8px 0 0 0;
}
.programs {
font-size: 0;
margin-bottom: 15px;
}
.programs button {
outline: none;
margin-bottom: 0;
background: whitesmoke;
width: 50%;
height: auto;
font-weight: normal;
border: 1px solid #ededed;
color: #000000;
font-size: 14px;
padding: 4px 0;
text-shadow: 0px 0px 0px #2f6627;
}
.programs button:hover {
background: #99cfe0;
}
.programs button.programs-filter-btn-active,
.programs button.programs-sort-btn-active {
box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.5) inset, 0px 0px 1px transparent;
background: #3a9fbf;
color: white;
}
.courses {
margin-bottom: 15px;
font-size: 0;
background: whitesmoke;
}
.courses li {
text-align: center;
font-size: 14px;
display: inline-block;
width: 46%;
margin: 0 2%;
}
.courses a {
display: block;
height: 60px;
margin: 15px 0;
padding-top: 12.5px;
background: whitesmoke;
color: black;
border: 1px solid white;
transition: all .4s ease;
}
.courses a:hover {
background: #99cfe0;
}
.p, .p a {
font-family: Arial, sans-serif;
font-size: 14px;
text-align: center;
}
/* MEDIA QUERIES STYLES
–––––––––––––––––––––––––––––––––––––––––––––––––– */
#media only screen and (min-width: 750px) {
.container {
width: 95%;
}
.courses a {
background: #EBEBEB;
border: none;
}
h4 {
width: 50%;
margin-top: 12px;
}
img {
margin-bottom: 0;
}
.programs {
margin-bottom: 0;
}
.programs button {
width: 25%;
margin-bottom: 15px;
}
.courses li {
width: 21%;
}
}
The JS:
mixitup('#mix-wrapper', {
load: {
sort: 'order:asc'
},
animation: {
effects: 'fade rotateZ(-180deg)',
duration: 700
},
classNames: {
block: 'programs',
elementFilter: 'filter-btn',
elementSort: 'sort-btn'
},
selectors: {
target: '.mix-target'
}
});

CSS slideshow animations will not occure

I am mocking a slide show animation by W3 Schools by integrating it into one of my websites. The slides do change in right times but the fade top/bot commands do not seem to do anything. I have checked my divs and javascript but it gets tricking trying to mock something and translating it into my website
is there an issue on my animation callout or what may be the problem?
var myIndex = 0;
carousel();
function carousel() {
var i;
var x = document.getElementsByClassName("mySlides");
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
myIndex++;
if (myIndex > x.length) {
myIndex = 1
}
x[myIndex - 1].style.display = "block";
setTimeout(carousel, 2550);
}
body {
font: 15px/1.5 Ariel, Helvetica, sans-serif;
padding: 0;
margin: 0;
background-color: #f4f4f4;
}
/*Global Settings*/
.container {
width: 80%;
margin: auto;
overflow: hidden;
}
nav {
float: right;
margin-top: 10px;
}
/* Header */
header {
background: #0D98BA;
color: #FFD700;
padding-top: 30px;
min-height: 70px;
border-bottom: #FF4500 3px solid;
}
#a {
color: #ffffff;
text-decoration: none;
text-transform: uppercase;
font-size: 16px;
}
header ul {
margin: 0;
padding: 0;
}
header li {
float: left;
display: inline;
padding: 0 20px 0 20px;
}
header #branding {
float: left;
}
header #branding h1 {
margin: 0;
}
header .highlight,
header .current a {
color: #000000;
font-weight: bold;
}
header a:hover {
color: #fffffff;
font-weight: bold;
}
/* Showcase */
#showcase {
min-height: 400px;
background: url('');
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<meta name="Developer" content="Alejandro Muratalla / ElitePower">
<title>Power Training | Home</title>
</head>
<body>
<header>
<div class="container">
<div id="branding">
<h1>Power Clan <span class="highlight">Training</span></h1>
</div>
<nav>
<ul>
<li><span class="highlight">Home</span></li>
<li>Theory</li>
<li>More</li>
</ul>
</nav>
</div>
</header>
<section id="showcase">
<div class="container">
<div class="w3-content w3-section" style="max-width:500px">
<img class="slides w3-animate-top" src=" https://www.w3schools.com/w3css/img_rr_04.jpg " style="width:100%">
<img class="slides w3-animate-bottom" src=" https://www.w3schools.com/w3css/img_rr_01.jpg " style="width:100%">
<img class="slides w3-animate-top" src=" https://www.w3schools.com/w3css/img_rr_03.jpg " style="width:100%">
</div>
<h1>Learn Professional Stratagies With Us</h1>
<p>rggr hgirhg gh rh ruhgrgh rhr rrugrughghrh</p>
</div>
</section id="newslater">
<div class="container">
<h1>Subscribe To Our Channel</h1>
<form action="https://www.youtube.com">
<button id="subscribe">Subscribe</button>
</form>
<section id="boxes">
<div class="container">
<div class="box">
<img src=" http://res.freestockphotos.biz/pictures/14/14337-illustration-of-an-open-book-pv.png ">
<h3>Learn Theory</h3>
<p></p>
</div>
<div class="box">
<img src=" https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Tactics_ballonicon2.svg/150px-Tactics_ballonicon2.svg.png ">
<h3>Explore Team Plays</h3>
<p></p>
</div>
<div class="box">
<img src=" https://cdn.pixabay.com/photo/2013/07/12/18/54/idea-153974_960_720.png ">
<h3>Tips and Tricks Videos</h3>
<p></p>
</div>
</div>
</section>
<footer>
<p>© Power Clan Super Rocketball , ElitePower 2018</p>
</footer>
</body>
</html>

In javascript the class name you have used is mySlides
var x = document.getElementsByClassName("mySlides");
but in HTML you have used class name as slides
Change on either side and it will start working.
var myIndex = 0;
carousel();
function carousel() {
var i;
var x = document.getElementsByClassName("slides");
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
myIndex++;
if (myIndex > x.length) {
myIndex = 1
}
x[myIndex - 1].style.display = "block";
setTimeout(carousel, 2550);
}
body {
font: 15px/1.5 Ariel, Helvetica, sans-serif;
padding: 0;
margin: 0;
background-color: #f4f4f4;
}
/*Global Settings*/
.container {
width: 80%;
margin: auto;
overflow: hidden;
}
nav {
float: right;
margin-top: 10px;
}
/* Header */
header {
background: #0D98BA;
color: #FFD700;
padding-top: 30px;
min-height: 70px;
border-bottom: #FF4500 3px solid;
}
#a {
color: #ffffff;
text-decoration: none;
text-transform: uppercase;
font-size: 16px;
}
header ul {
margin: 0;
padding: 0;
}
header li {
float: left;
display: inline;
padding: 0 20px 0 20px;
}
header #branding {
float: left;
}
header #branding h1 {
margin: 0;
}
header .highlight,
header .current a {
color: #000000;
font-weight: bold;
}
header a:hover {
color: #fffffff;
font-weight: bold;
}
/* Showcase */
#showcase {
min-height: 400px;
background: url('');
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<meta name="Developer" content="Alejandro Muratalla / ElitePower">
<title>Power Training | Home</title>
</head>
<body>
<header>
<div class="container">
<div id="branding">
<h1>Power Clan <span class="highlight">Training</span></h1>
</div>
<nav>
<ul>
<li><span class="highlight">Home</span></li>
<li>Theory</li>
<li>More</li>
</ul>
</nav>
</div>
</header>
<section id="showcase">
<div class="container">
<div class="w3-content w3-section" style="max-width:500px">
<img class="slides w3-animate-top" src=" https://www.w3schools.com/w3css/img_rr_04.jpg " style="width:100%">
<img class="slides w3-animate-bottom" src=" https://www.w3schools.com/w3css/img_rr_01.jpg " style="width:100%">
<img class="slides w3-animate-top" src=" https://www.w3schools.com/w3css/img_rr_03.jpg " style="width:100%">
</div>
<h1>Learn Professional Stratagies With Us</h1>
<p>rggr hgirhg gh rh ruhgrgh rhr rrugrughghrh</p>
</div>
</section id="newslater">
<div class="container">
<h1>Subscribe To Our Channel</h1>
<form action="https://www.youtube.com">
<button id="subscribe">Subscribe</button>
</form>
<section id="boxes">
<div class="container">
<div class="box">
<img src=" http://res.freestockphotos.biz/pictures/14/14337-illustration-of-an-open-book-pv.png ">
<h3>Learn Theory</h3>
<p></p>
</div>
<div class="box">
<img src=" https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Tactics_ballonicon2.svg/150px-Tactics_ballonicon2.svg.png ">
<h3>Explore Team Plays</h3>
<p></p>
</div>
<div class="box">
<img src=" https://cdn.pixabay.com/photo/2013/07/12/18/54/idea-153974_960_720.png ">
<h3>Tips and Tricks Videos</h3>
<p></p>
</div>
</div>
</section>
<footer>
<p>© Power Clan Super Rocketball , ElitePower 2018</p>
</footer>
</body>
</html>

Dividing a website into 3 sections -> 1 horizontally and 2 vertically below

i have a Sidebar on the left of the Screen. I can toggle it by pressing a button. On the right I have the content.
I want to place the button on a horizontal bar on the top. The sidebar seems to cover this bar so I can not see the button.
This is my current code:
The Html File:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>
</title>
</head>
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"></script>
<script src="MainController.js"></script>
<link rel="stylesheet" type="text/css" href="MainStyle.css">
<body onload="InitDocument()">
<div id="topBar">
<button id="btnNavToggle" type="button" onclick="ToggleNavbar()">Menu</button>
</div>
<div id="container">
<div id="sideNav">
<button type="button" onclick="NewEntry()">+</button>
<p>test</p>
</div>
<div id="mainArea">
<p>Title:</p>
<input id="titleInputField" type="text">
<p>Text:</p>
<textarea id="textArea"> </textarea>
<p></p>
<button type="button" onclick="SaveEntry()">Save</button>
</div>
</div>
</body>
</html>
The Css File:
body{
background-color: #EEEEEE;
color: #000000;
}
* {
margin: 0;
padding: 0;
}
#sideNav {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
top: 0;
left: 0;
overflow-x: hidden;
background-color: #333333;
color: #EEEEEE;
}
The Js File:
var navIsOpen = true;
function InitDocument(){ // Initialization
ToggleNavbar();
}
function ToggleNavbar(){ // show - hide the navbar
var sideNavWidth = "0px";
var mainAreaWidth = "0px";
if (navIsOpen)
{
sideNavWidth = "200px";
mainAreaWidth = "200px";
}
$("#sideNav").width(sideNavWidth);
$("#mainArea").css('margin-left',mainAreaWidth);
navIsOpen = !navIsOpen;
}
function SaveEntry(){ // save the entry
var txtTitle = $("#titleInputField").val();
var txtField = $("#textArea").val();
alert(txtTitle + "#" + txtField);
}
function NewEntry() { // create a new entry
alert("neuer Eintrag");
}
This is what I want to archieve
It seems I just have to fix the CSS to get it done.

I added margin-top:0; to your topBar and removed top: 0; from your sideNav.
Try this:
var navIsOpen = true;
function InitDocument(){ // Initialization
ToggleNavbar();
}
function ToggleNavbar(){ // show - hide the navbar
var sideNavWidth = "0px";
var mainAreaWidth = "0px";
if (navIsOpen)
{
sideNavWidth = "200px";
mainAreaWidth = "200px";
}
$("#sideNav").width(sideNavWidth);
$("#mainArea").css('margin-left',mainAreaWidth);
navIsOpen = !navIsOpen;
}
function SaveEntry(){ // save the entry
var txtTitle = $("#titleInputField").val();
var txtField = $("#textArea").val();
alert(txtTitle + "#" + txtField);
}
function NewEntry() { // create a new entry
alert("neuer Eintrag");
}
body{
background-color: #EEEEEE;
color: #000000;
}
*{
margin: 0;
padding: 0;
}
#topBar {
margin-top:0;
background-color: navy;
}
#sideNav {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
left: 0;
overflow-x: hidden;
background-color: #333333;
color: #EEEEEE;
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>
</title>
</head>
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"></script>
<script src="MainController.js"></script>
<link rel="stylesheet" type="text/css" href="MainStyle.css">
<body onload="InitDocument()">
<div id="topBar">
<button id="btnNavToggle" type="button" onclick="ToggleNavbar()">Menu</button>
</div>
<div id="container">
<div id="sideNav">
<button type="button" onclick="NewEntry()">+</button>
<p>test</p>
</div>
<div id="mainArea">
<p>Title:</p>
<input id="titleInputField" type="text">
<p>Text:</p>
<textarea id="textArea"> </textarea>
<p></p>
<button type="button" onclick="SaveEntry()">Save</button>
</div>
</div>
</body>
</html>

Try this:
var navIsOpen = true;
function InitDocument(){ // Initialization
ToggleNavbar();
}
function ToggleNavbar(){ // show - hide the navbar
var sideNavWidth = "0px";
var mainAreaWidth = "0px";
if (navIsOpen)
{
sideNavWidth = "200px";
mainAreaWidth = "200px";
}
$("#sideNav").width(sideNavWidth);
$("#mainArea").css('margin-left',mainAreaWidth);
navIsOpen = !navIsOpen;
}
function SaveEntry(){ // save the entry
var txtTitle = $("#titleInputField").val();
var txtField = $("#textArea").val();
alert(txtTitle + "#" + txtField);
}
function NewEntry() { // create a new entry
alert("neuer Eintrag");
}
body{
background-color: #EEEEEE;
color: #000000;
}
* {
margin: 0;
padding: 0;
}
#main {
display: flex;
flex-direction: column;
}
#sideNav {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
top: 50px;
left: 0;
overflow-x: hidden;
background-color: #333333;
color: #EEEEEE;
}
#topBar {
position: fixed;
display: inline-block;
width: 100%;
height: 50px;
background-color: red;
}
#container {
display: flex;
padding-top: 50px;
flex: 1;
flex-direction: row;
}
<html>
<head>
<meta charset="utf-8" />
<title>
</title>
</head>
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"></script>
<script src="MainController.js"></script>
<link rel="stylesheet" type="text/css" href="MainStyle.css">
<body onload="InitDocument()">
<div id="main">
<div id="topBar">
<button id="btnNavToggle" type="button" onclick="ToggleNavbar()">Menu</button>
</div>
<div id="container">
<div id="sideNav">
<button type="button" onclick="NewEntry()">+</button>
<p>test</p>
</div>
<div id="mainArea">
<p>Title:</p>
<input id="titleInputField" type="text">
<p>Text:</p>
<textarea id="textArea"> </textarea>
<p></p>
<button type="button" onclick="SaveEntry()">Save</button>
</div>
</div>
</div>
</body>
</html>
Take a look flex-box concepts

Checkout this example of using the new HTML5 semantic elements.
http://www.w3schools.com/html/html5_semantic_elements.asp
I have taken most of the example elements from the link above and created a simple HTML5 page.
You can add/remove/modify any of the section below by removing the HTML or removing/adding additional CSS properties.
var toggleButton = document.getElementById('toggle-button');
var pageWrapper = document.getElementsByClassName('wrapper')[0];
toggleButton.addEventListener('click', function() {
toggleClass(pageWrapper, 'toggle-hidden')
});
function toggleClass(el, className) {
if (el.classList) {
el.classList.toggle(className);
} else {
var classes = el.className.split(' ');
var existingIndex = classes.indexOf(className);
if (existingIndex >= 0) classes.splice(existingIndex, 1);
else classes.push(className);
el.className = classes.join(' ');
}
}
header, footer {
width: 100%;
text-align: center;
background: #DDD;
padding: 0.25em !important;
}
.title {
font-weight: bold;
font-size: 2.25em;
margin-bottom: 0.5em;
}
.subtitle {
font-size: 1.5em;
font-style: italic;
}
.wrapper {
background: #EEE;
}
nav {
text-align: center;
background: #CCC;
padding: 0.25em !important;
}
aside {
float: left;
top: 0;
width: 12em;
height: 100%;
padding: 0.25em !important;
}
aside a {
display: block;
text-decoration: none;
margin-bottom: 0.5em;
}
aside a:before {
content: '➢ ';
}
article, section {
margin-left: 12em !important;
background: #FFF;
padding: 0.25em !important;
}
/* Default HTML4 typography styles */
h1 { font-size: 2.00em !important; margin: 0.67em 0 !important; }
h2 { font-size: 1.50em !important; margin: 0.75em 0 !important; }
h3 { font-size: 1.17em !important; margin: 0.83em 0 !important; }
h5 { font-size: 0.83em !important; margin: 1.50em 0 !important; }
h6 { font-size: 0.75em !important; margin: 1.67em 0 !important; }
h1, h2, h3, h4, h5, h6 { font-weight: bolder !important; }
p { font-size: 1.00em !important; margin: 1em 0 !important; }
#toggle-button {
display: block;
position: absolute;
width: 5em;
height: 5em;
line-height: 1.5em;
text-align: center;
}
.wrapper.toggle-hidden aside {
display: none;
width: 0;
}
.wrapper.toggle-hidden article, .wrapper.toggle-hidden section {
margin-left: 0 !important;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css" rel="stylesheet"/>
<header>
<button id="toggle-button">Toggle<br />Sidebar</button>
<div class="title">What Does WWF Do?</div>
<div class="subtitle">WWF's mission:</div>
</header>
<div class="wrapper">
<nav>
HTML |
CSS |
JavaScript |
jQuery
</nav>
<aside>
<h1>Links</h1>
HTML
CSS
JavaScript
jQuery
</aside>
<section>
<h1>WWF</h1>
<p>The World Wide Fund for Nature (WWF) is....</p>
</section>
<article>
<h1>What Does WWF Do?</h1>
<p>WWF's mission is to stop the degradation of our planet's natural environment,
and build a future in which humans live in harmony with nature.</p>
</article>
</div>
<footer>
<p>Posted by: Hege Refsnes</p>
<p>Contact information: someone#example.com.</p>
</footer>

Why is my carousel snapping to the top on user interaction?

I've made a carousel on my single page website that displays some of my photography work. The problem I'm having is that whenever I click one of the arrows to access the next picture - left or right, I am instantly snapped to the top of the page!
I've checked through both the CSS and JS and I can't seem to find any reason as to why this would be occurring.
HTML:
<div class="container">
<h3><span class="underline">Exploration</span></h3>
<p>I love exploring and capturing epic moments on my journeys. Here's some of my favourites from my latest trip across the west coast of America.</p>
</div>
<div class="slider">
<!--SLIDE 1 START-->
<div class="slide active-slide slide-feature slide-feature-1">
<div class="container">
<div class="row">
</div>
</div>
</div>
<!--SLIDE 1 END-->
<!--SLIDE 2 START-->
<div class="slide slide-feature slide-feature-2">
<div class="container">
<div class="row">
</div>
</div>
</div>
<!--SLIDE 2 END-->
<!--SLIDE 3 START-->
<div class="slide slide-feature slide-feature-3">
<div class="container">
<div class="row">
</div>
</div>
</div>
<!--SLIDE 3 END-->
<!--SLIDE 4 START-->
<div class="slide slide-feature slide-feature-4">
<div class="container">
<div class="row">
</div>
</div>
</div>
<!--SLIDE 4 END-->
<!--SLIDE 5 START-->
<div class="slide slide-feature slide-feature-5">
<div class="container">
<div class="row">
</div>
</div>
</div>
<!--SLIDE 5 END-->
</div>
<div class="slider-nav">
<img src="images/arrow-left.svg">
<ul class="slider-dots">
<li class="dot active-dot">•</li>
<li class="dot">•</li>
<li class="dot">•</li>
<li class="dot">•</li>
<li class="dot">•</li>
</ul>
<img src="images/arrow-right.svg">
</div>
</div>
<!--FLIPBOARD ENDS HERE-->
</div>
CSS:
.exploration {
height: 1100px;
background-color: #ffffff;
}
.exploration .container {
position: relative;
top: 35px;
width: 1200px;
}
.exploration h3 {
color: #313131;
font-size: 40px;
font-family: 'Oswald', sans-serif;
font-weight: 300;
padding-bottom: 20px;
text-align: center;
}
.exploration p {
color: #313131;
font-size: 20px;
font-family: 'Oswald', sans-serif;
font-weight: 300;
text-align: center;
}
.slider {
position: relative;
top: 50px;
width: 100%;
height: 800px;
}
.slide {
display: none;
width: 100%;
height: 100%;
}
.active-slide {
display: block;
}
/* Slide feature */
.slide-feature {
text-align: center;
height: 800px;
}
.slide-feature-1 {
background-image: url('https://scontent-lhr.xx.fbcdn.net/hphotos-xaf1/t31.0-8/11036160_10152854777396270_5157414753497878003_o.jpg');
background-position: center;
}
.slide-feature-2 {
background-image: url('https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xta1/t31.0-8/11218515_10152909922431270_7749144937209461633_o.jpg');
background-position: center;
}
.slide-feature-3 {
background-image: url('https://scontent-lhr.xx.fbcdn.net/hphotos-xpa1/t31.0-8/11187795_10152891725491270_1769195601160147349_o.jpg');
background-position: bottom;
}
.slide-feature-4 {
background-image: url('https://scontent-lhr.xx.fbcdn.net/hphotos-xaf1/t31.0-8/11154672_10152854784061270_3532862830070230799_o.jpg');
background-position: center;
}
.slide-feature-5 {
background-image: url('https://scontent-lhr.xx.fbcdn.net/hphotos-xap1/t31.0-8/11164749_10152909922426270_8192461025609874418_o.jpg');
background-position: center;
}
.slide-feature img {
margin-top: 112px;
margin-bottom: 28px;
}
.slider-nav {
text-align: center;
margin-top: 20px;
}
.arrow-prev {
margin-right: 45px;
display: inline-block;
vertical-align: top;
margin-top: 9px;
position: relative;
top: 40px;
}
.arrow-next {
margin-left: 45px;
display: inline-block;
vertical-align: top;
margin-top: 9px;
position: relative;
top: 40px;
}
.slider-dots {
list-style: none;
display: inline-block;
padding-left: 0;
margin-bottom: 0;
position: relative;
top: 40px;
}
.slider-dots li {
color: #bbbcbc;
display: inline;
font-size: 30px;
margin-right: 5px;
}
.slider-dots li.active-dot {
color: #7FCCE5;
}
JS:
var main = function() {
$('.dropdown-toggle').click(function() {
$('.dropdown-menu').toggle();
});
//Next Arrow Functionality
$('.arrow-next').click(function() {
var currentSlide=$('.active-slide');
var nextSlide=currentSlide.next();
var currentDot=$('.active-dot');
var nextDot=currentDot.next();
if (nextSlide.length == 0) {
nextSlide=$('.slide').first();
nextDot=$('.dot').first();
}
currentSlide.fadeOut(600).removeClass('active-slide');
nextSlide.fadeIn(600).addClass('active-slide');
currentDot.removeClass('active-dot');
nextDot.addClass('active-dot');
});
//Previous Arrow Click Functionality
$('.arrow-prev').click(function() {
var currentSlide=$('.active-slide');
var prevSlide=currentSlide.prev();
var currentDot=$('.active-dot');
var prevDot=currentDot.prev();
if(prevSlide.length == 0) {
prevSlide=$('.slide').last();
prevDot=$('.dot').last();
}
currentSlide.fadeOut(600).removeClass('active-slide');
prevSlide.fadeIn(600).addClass('active-slide');
currentDot.removeClass('active-dot');
prevDot.addClass('active-dot');
});
//Load Jumbotron text on page open.
$("#test h1").addClass("load");
};
$(document).ready(main);

You need to add e.preventDefault(); to your onlick functions
Check the fiddle
EDIT
As I just commented in the comment section it is the href="#" that is causing the page to the jump to the top. So technically if you remove the achor tag the e.preventDefault(); is not necessary. But it is good to keep it.

Add a parameter (e) to your click callback functions then prevent default post (that an anchor tag with href set has) with this line:
e.preventDefault();
like this:
//Next Arrow Functionality
$('.arrow-next').click(function (e) {
var currentSlide = $('.active-slide');
var nextSlide = currentSlide.next();
var currentDot = $('.active-dot');
var nextDot = currentDot.next();
if (nextSlide.length == 0) {
nextSlide = $('.slide').first();
nextDot = $('.dot').first();
}
currentSlide.fadeOut(600).removeClass('active-slide');
nextSlide.fadeIn(600).addClass('active-slide');
currentDot.removeClass('active-dot');
nextDot.addClass('active-dot');
e.preventDefault();
});
//Previous Arrow Click Functionality
$('.arrow-prev').click(function (e) {
var currentSlide = $('.active-slide');
var prevSlide = currentSlide.prev();
var currentDot = $('.active-dot');
var prevDot = currentDot.prev();
if (prevSlide.length == 0) {
prevSlide = $('.slide').last();
prevDot = $('.dot').last();
}
currentSlide.fadeOut(600).removeClass('active-slide');
prevSlide.fadeIn(600).addClass('active-slide');
currentDot.removeClass('active-dot');
prevDot.addClass('active-dot');
e.preventDefault();
});

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