Develop Reference

Javascript audio object not playing on mobile devices

I made this audio player but the codesandbox does not work in mobile devices. It works perfectly fine in desktop.
I get 'Could not get the stack frame of error' error when i try to play song from my phone.
Audio player
The player gets audio files data in a javascript object and they get built into a list. The audios start playing when list item is clicked. The code looks like this
$(function () {
$("#time-progress").progress({ percent: 0 });
let audio = new Audio();
const songs = [
{
artist: "Yaru Makaveli & Yada Sads",
image: "https://i.ytimg.com/vi/rI2vJENDvmY/maxresdefault.jpg",
title: "Cypher Weyn",
song: "cypherweyn2.mp3"
},
{
artist: "Abebe Araya",
image: "https://i.ytimg.com/vi/mp_cR7pVEcw/maxresdefault.jpg",
title: "Natsnet",
song: "natsnet.mp3"
},
{
artist: "Shewit & Semere",
image: "https://i.ytimg.com/vi/ucolLdVzRyg/maxresdefault.jpg",
title: "Betey",
song: "betey.mp3"
},
{
artist: "Q Rap M.O.DB",
image: "https://i.scdn.co/image/ab6761610000e5eb749c5e25b3d167fd3008914b",
title: "Waero",
song: "waero.mp3"
},
{
artist: "Yaru Makaveli & Yada Sads",
image: "https://i.ytimg.com/vi/rI2vJENDvmY/maxresdefault.jpg",
title: "Tealime",
song: "tealime.mp3"
},
{
artist: "Eden Gebreselassie",
image:
"https://is4-ssl.mzstatic.com/image/thumb/Music116/v4/00/4a/14/004a1407-eaed-45d3-048d-12dae76b7d3f/artwork.jpg/375x375bb.jpg",
title: "Goblel",
song: "goblel.mp3"
},
{
artist: "Amanuel Yemane",
image: "https://i.ytimg.com/vi/iukjMznrHcI/maxresdefault.jpg",
title: "Adi Latni",
song: "adilatni.mp3"
},
{
artist: "Tmnit Welday",
image: "https://i.ytimg.com/vi/MqVT5GdW6hQ/maxresdefault.jpg",
title: "Segar",
song: "segar.mp3"
}
];
let list_of_songs = songs
.map(function (song, index) {
return ` <div class="item" data-src="${song.song}"" data-title="${song.title}" data-artist="${song.artist}" data-index=${index} data-image=${song.image}>
<img class="ui avatar image" src="${song.image}"">
<div class="content">
<div id="equalizer">
<div id="bar1"></div>
<div id="bar2"></div>
<div id="bar3"></div>
<div id="bar4"></div>
</div>
<i class="icon button-overlay circle outline"></i>
<span class="header">${song.title}</span>
<div class="description">${song.artist}</div>
</div>
</div>`;
})
.join("");
let play = document.querySelector("#play");
let currentSong = 0;
document.getElementById("song-list").innerHTML = list_of_songs;
audio = new Audio(`./music/${songs[0].song}`);
let icons = document.querySelectorAll(".icon");
$(document).on("click", ".item", function () {
let { src, artist, title, image, index } = this.dataset;
currentSong = Number(index);
let list_items = document.querySelectorAll(".item");
list_items.forEach((e) => {
e.classList.remove("active");
});
this.classList.add("active");
let newaudio = new Audio(`./music/${src}`);
if (audio.currentTime > 0 && !audio.paused && audio.src == newaudio.src) {
play.classList.remove("pause");
play.classList.add("play");
audio.pause();
this.querySelector(".button-overlay").classList.add("play");
this.querySelector(".button-overlay").classList.remove("pause");
} else if (
audio.currentTime > 0 &&
audio.paused &&
audio.src == newaudio.src
) {
play.classList.remove("play");
play.classList.add("pause");
this.querySelector(".button-overlay").classList.add("pause");
this.querySelector(".button-overlay").classList.remove("play");
audio.play();
} else {
this.querySelector(".button-overlay").classList.add("pause");
this.querySelector(".button-overlay").classList.remove("play");
playSong(src, artist, title, image);
}
});
audio.addEventListener("timeupdate", function (e) {
let currentTime = audio.currentTime;
let duration = audio.duration;
let minutes = Math.floor(currentTime / 60);
minutes = minutes >= 10 ? minutes : "0" + minutes;
let seconds = Math.floor(currentTime % 60);
seconds = seconds >= 10 ? seconds : "0" + seconds;
document.querySelector("#timer").innerText = `${minutes}:${seconds}`;
//progress
let status = Math.floor((currentTime / duration) * 100);
$("#time-progress").progress({ percent: status });
});
let artist_img = document.querySelector(".artist-image");
let song_title = document.querySelector("#title");
icons.forEach((icon) => {
icon.addEventListener("click", (e) => {
let type = e.target.dataset.type;
let image, src, artist, title;
var list_items = document.querySelectorAll(".item");
switch (type) {
case "play":
if (audio.currentTime > 0) {
play.classList.remove("play");
play.classList.add("pause");
play.dataset.type = "pause";
audio.play();
} else {
currentSong = 0;
let item = document.querySelector(".item");
item.classList.add("active");
item.querySelector(".icon").classList.add("pause");
document
.querySelector(".item")
.querySelector(".button-overlay")
.classList.remove("play");
const { song, artist, title, image } = songs[0];
playSong(song, title, artist, image);
}
break;
case "pause":
audio.pause();
artist_img.classList.remove("rotate-image");
e.target.classList.remove("pause");
e.target.classList.add("play");
e.target.dataset.type = "play";
break;
case "prev":
currentSong =
currentSong - 1 < 0 ? songs.length - 1 : currentSong - 1;
list_items.forEach((e) => {
e.classList.remove("active");
});
list_items[currentSong].classList.add("active");
var off =
$(".item.active").offset().top - $("#song-list").offset().top;
$("#song-list").scrollTop(off);
image = songs[currentSong].image;
src = songs[currentSong].song;
artist = songs[currentSong].artist;
title = songs[currentSong].title;
playSong(src, title, artist, image);
break;
case "next":
currentSong =
currentSong + 1 > songs.length - 1 ? 0 : currentSong + 1;
list_items.forEach((e, index) => {
e.classList.remove("active");
});
list_items[currentSong].classList.add("active");
var off =
$(".item.active").offset().top - $("#song-list").offset().top;
$("#song-list").scrollTop(off);
image = songs[currentSong].image;
src = songs[currentSong].song;
artist = songs[currentSong].artist;
title = songs[currentSong].title;
playSong(src, title, artist, image);
break;
default:
break;
}
});
});
function playSong(src, artist, title, image) {
document.querySelector(
".artist-img-bg"
).style.backgroundImage = `url(${image})`;
audio.src = `./music/${src}`;
artist_img.src = `${image}`;
artist_img.classList.add("rotate-image");
song_title.innerText = `${artist} - ${title}`;
document.querySelector("#title").classList.add("song-title");
play.classList.remove("play");
play.classList.add("pause");
play.dataset.type = "pause";
audio.play();
}
$(document).on("click", ".button-overlay", function () {
if (audio.currentTime > 0) {
this.classList.remove("play");
this.classList.add("pause");
audio.play();
}
});
});
body {
margin: 0;
padding: 0;
z-index: 101;
}
.container {
padding: 15px;
margin: 0 auto;
width: 100%;
background: linear-gradient(#042a45, #7295ae);
display: flex;
height: 100vh;
align-items: center;
justify-content: center;
z-index: 100;
}
.music-player {
width: 400px;
height: auto;
background: linear-gradient(to top,#042a45, #7295ae);
border-radius: 1em;
display: flex;
align-items: center;
flex-direction: column;
padding: 10px;
}
#top-img-container {
width: 100%;
min-height: 200px;
position: relative;
display: flex;
flex-direction: column;
align-items: center;
}
.artist-img-bg {
filter: blur(3px);
-webkit-filter: blur(3px);
background-repeat: no-repeat;
background-size: cover;
background-position: center;
position: absolute;
z-index: 1;
width: 100%;
min-height: 200px;
}
.artist-image {
margin-top: 20px ;
max-height: 300px;
width: 150px;height: 150px;max-width: 300px;
border-radius: 50%;
box-shadow: 0 0 10px 10px #154275;
position: absolute;
z-index: 999;
}
.rotate-image {
animation:rotate 100s infinite;
animation-timing-function: linear;
}
#keyframes rotate {
from {
transform: rotate(0deg);
}
to {
transform: rotate(365deg);
}
}
.controls {
width: 100%;
margin-bottom: 2em;
margin-top: 1em;display: flex;
justify-content:space-around;
}
.icon {
color:aliceblue;
font-size: 1.5em !important;
cursor: pointer;
transition: transform .2s ease-in-out;
}
.icon:hover {
transform: scale(1.2);
}
.song-title-container {
position: relative;
overflow: hidden;
width: 90%;
margin: 10px auto 0;
}
.song-title {
margin: 10px 0 15px;
text-align: center;
color: #ffffff;
font-weight: 700;animation: song_title 7s infinite ease-in-out 3s;
animation-timing-function: linear;
position: relative;
}
#keyframes song_title {
0% {
left:0%;
} 49% {
left: -100%;
visibility: hidden;
} 50% {
left: 200%;
visibility: hidden;
}
51% {
left: 100%;
visibility: visible;
}
100% {
visibility: visible;
left: 0%
}
}
#timer, #song-list .header, #song-list .description {
color: white;
}
#playlist-title {
color: white;
width: 100%;
margin-left: 20px;
}
#song-list {
height: 200px;overflow-y: scroll;width: 95%;
background-color: #16415f;
border-radius: 1em;
}
#song-list .item {
cursor: pointer;
padding: 10px;
position: relative;
}
.item.active {
background-color: #38596e;
box-shadow: 0px 2px 10px #07141d;
}
.list-image {
position: relative;
display: inline;
}
.content .icon {
position: absolute;
left: 20px;
top: 20px;
visibility: hidden;
}
.item.active .content .button-overlay {
visibility: visible;
}
#song-list .avatar {
width: 3em;
height: 3em;
}
#song-list .item:hover {
background-color: #3a5a6f;
}
#equalizer {
position: absolute;
right: 5px;top: 50%;transform: translateY(-50%);width: 40px;
max-height: 20px;
visibility: hidden;
display: flex;
justify-content: space-evenly;
}
.item.active .content #equalizer {
visibility: visible;
}
#bar1, #bar2, #bar3, #bar4 {
background-color: #1aa303;
width: 2px;
}
#bar1 {
animation: bar1 1.2s linear infinite;
}
#bar2 {
animation: bar2 0.9s linear infinite;
}
#bar3 {
animation: bar2 1.4s linear infinite;
}
#bar4 {
animation: bar4 1s linear infinite;
}
#keyframes bar1 {
0% {
height: 5px;
}
50% {
height: 10px;
}
100% {
height: 5px;
}
}#keyframes bar2 {
0% {
height: 10px;
}
50% {
height: 5px;
}
100% {
height: 10px;
}
}
#keyframes bar3 {
0% {
height: 5px;
}
50% {
height: 10px;
}
100% {
height: 5px;
}
}
#keyframes bar4 {
0% {
height: 10px;
}
50% {
height:5px;
}
100% {
height: 10px;
}
}
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Music Player</title>
<link rel="stylesheet" href="./main.css" />
<link
href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.css"
rel="stylesheet"
/>
</head>
<body>
<div class="ui-container container">
<div class="music-player">
<div id="top-img-container">
<div class="artist-img-bg"></div>
<img
src="https://i.pinimg.com/originals/1d/3a/26/1d3a2651f9ad02fb12aae08f618a2847.png"
class="artist-image"
alt="on and on"
/>
</div>
<div class="song-title-container">
<h3 id="title"></h3>
<div id="time-progress" class="ui tiny progress">
<div style="min-width: 1%" class="bar"></div>
<div id="timer" class="label">-00:00-</div>
</div>
</div>
<div class="controls">
<i data-type="prev" id="prev" class="icon backward"></i>
<i data-type="play" id="play" class="icon play circle outline"></i>
<i data-type="next" id="pause" class="icon forward"></i>
</div>
<h3 id="playlist-title">Playlist - Best of 2021</h3>
<div id="song-list" class="ui middle aligned divided list"></div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.4.1/semantic.min.js"></script>
<script type="text/javascript" src="./main.js"></script>
</body>
</html>
It works fine in desktop browsers but it does not work in mobile devices. What am I doin wrong?

Java script game

I'm looking for some help with my java script game as i have just started getting into it now,
my problem is that my animation loops infinitely on autopay and reloads the page every time it meets the condition to restart,
what I want to achieve is have a start button that would start the game and the animation and score on click and if the condition for restart is met I have to press the start button again to play again
I would appreciate all the help I could get
const skate = document.getElementById("skate");
const rock = document.getElementById("rock");
const score = document.getElementById("score");
function jump() {
skate.classList.add("jump-animation");
setTimeout(() =>
skate.classList.remove("jump-animation"), 500);
}
document.addEventListener('keypress', (event) => {
if (!skate.classList.contains('jump-animation')) {
jump();
}
})
setInterval(() => {
const skateTop = parseInt(window.getComputedStyle(skate)
.getPropertyValue('top'));
const rockLeft = parseInt(window.getComputedStyle(rock)
.getPropertyValue('left'));
score.innerText++;
if (rockLeft < 0) {
rock.style.display = 'none';
} else {
rock.style.display = ''
}
if (rockLeft < 50 && rockLeft > 0 && skateTop > 150) {
location.reload();
}
}, 50);
#score { text-align: center; }
#game {
width: 600px;
height: 300px;
border: 2px solid black;
margin: auto;
background-image: url("./background.gif");
background-size: cover;
}
#skate {
height: 75px;
width: 75px;
top: 220px;
position: relative;
background-image: url("./skateboard.png");
background-size: cover;
}
#rock {
width: 50px;
height: 50px;
position: relative;
top: 175px;
left: 550px;
background-image: url("./rock.png");
background-size: cover;
animation: rock 1.33s infinite;
}
#keyframes rock {
0%{left: 550px;}
100%{left: -50px;}
}
.jump-animation {
animation: jump 0.5s;
}
#keyframes jump {
0%{top: 225px;}
50%{top: 75px;}
75%{top: 75px;}
100%{top: 225px;}
}
<div id="game">
<div id="skate"></div>
<div id="rock"></div>
</div>
<h1 id="score">0</h1>

The trick here is to have a variable at the top scope of this module to track the ID of the current animation so that the animation/interval can be turned off if the user presses the start button before the current game ends. It should also turn off once the end-game condition is met, although I'm not really sure why window.getComputedStyle() is being used to compute the variables used for that condition, but I guess it's still a work in progress.
EDIT: Somehow I didn't notice that the player and obstacle were already in the game so I added colors to them for easier debugging, at least on my end. This time I made it so that the rock will lose then immediately regain a class for its animation, but the re-addition needs to be asynchronous even if the delay is 0ms.
index.html
<head>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div id="game">
<div id="skate"></div>
<div id="rock"></div>
</div>
<h1 id="score">0</h1>
</div>
<div>
<button id="new-game">New Game </button>
</div>
</body>
<script>
const skate = document.getElementById("skate");
const rock = document.getElementById("rock");
const score = document.getElementById("score");
const newGameButton = document.getElementById("new-game");
function jump() {
skate.classList.add("jump-animation");
setTimeout(() => skate.classList.remove("jump-animation"), 500);
}
document.addEventListener('keypress', (event) => {
if (!skate.classList.contains('jump-animation')) {
jump();
}
});
let animationId;
newGameButton.addEventListener('click', () => {
resetScore();
resetRockAnimation();
playScoreAnimation();
function resetScore() {
clearInterval(animationId);
score.innerText = 0;
}
function resetRockAnimation() {
rock.classList = [];
setTimeout(() => rock.classList.add('rock-animation'), 0);
}
function playScoreAnimation() {
animationId = setInterval(() => {
const skateTop = parseInt(window.getComputedStyle(skate).getPropertyValue('top'));
const rockLeft = parseInt(window.getComputedStyle(rock).getPropertyValue('left'));
score.innerText++;
if (rockLeft < 0) {
rock.style.display = 'none';
}
else {
rock.style.display = '';
}
if (rockLeft < 50 && rockLeft > 0 && skateTop > 150) {
clearInterval(animationId);
}
}, 50);
}
});
</script>
style.css
#score {
text-align: center;
}
#game {
width: 600px;
height: 300px;
border: 2px solid black;
margin: auto;
background-image: url("./background.gif");
background-size: cover;
}
#skate {
height: 75px;
width: 75px;
top: 225px;
position: relative;
background-image: url("./skateboard.png");
background-size: cover;
background-color: slategrey;
}
#rock {
width: 50px;
height: 50px;
position: relative;
top: 175px;
left: 550px;
background-image: url("./rock.png");
background-size: cover;
background-color: lightcoral ;
}
.rock-animation {
animation: rock 1.33s infinite;
}
#keyframes rock {
0% {
left: 550px;
}
100% {
left: -50px;
}
}
.jump-animation {
animation: jump 0.5s;
}
#keyframes jump {
0% {
top: 225px;
}
50% {
top: 75px;
}
75% {
top: 75px;
}
100% {
top: 225px;
}
}

Javascript, problem calling function, key event not working

I'm practicing js and for long time i cant solve problem bellow.
I have function for changing the blurry background "changeBg", but it does not work when called.
Also key event function are not working dont know why.
I will appreciate any hints where to search for problems.
I know the code is wet but it's far from end "product".
//counting img tags
var n = $("img").length;
var m = n - 2;
//alert("jest " + m + "tagow img");
//adding onclick to source of file
var source = $(".slider-inner > img").attr("src");
$(".slider-inner > img").attr("onclick", "location.href=\'" + source + "\'");
for (i = 1; i <= m; i++) {
$(".dotcontainer").append($("<div class=\"dot\">x</div>"));
$('.slider-inner img').attr('id', function (i) {
return 'x' + (i + 1);
});
$('.dotcontainer div').attr('id', function (i) {
return 'x' + (i + 1);
});
var url = $('.slider-inner img:nth-child(' + i + ')').attr("src");
console.log(i);
}
///temporary solution for initial background
$(".bg").css('background', "url('"+ source +"')");
$(".bg").css('background-repeat', "no-repeat");
$(".bg").css('background-size', "cover");
$(".bg").css('background-position', "center");
//making first dot active
$('.dotcontainer div:nth-child(' + 1 + ')').addClass('activee');
//function changing backgorund
function changeBg() {
$(".bg").css('background', "url('"+ source +"')");
$(".bg").css('background-repeat', "no-repeat");
$(".bg").css('background-size', "cover");
$(".bg").css('background-position', "center");
};
// next buttton
$('.next').on('click', function nextImage() {
var currentImg = $('.active');
var nextImg = currentImg.next();
var currentdot = $('.activee');
var nextdot = currentdot.next();
if (nextImg.length) {
currentImg.removeClass('active').css('z-index', -10);
nextImg.addClass('active').css('z-index', 10);
currentdot.removeClass('activee');
nextdot.addClass('activee');
var source = nextImg.attr("src");
nextImg.attr("onclick", "location.href=\'" + source + "\'");
changeBg();
} else {
currentImg.removeClass('active').css('z-index', -10);
$('#x1').addClass('active').css('z-index', 10);
currentdot.removeClass('activee');
$('.dotcontainer div:nth-child(' + 1 + ')').addClass('activee');
}
});
//prev button
$('.prev').on('click', function prevImage() {
var currentImg = $('.active');
var prevImg = currentImg.prev();
var currentdot = $('.activee');
var prevdot = currentdot.prev();
var n = $("img").length;
var m = n - 2;
if (prevImg.length) {
currentImg.removeClass('active').css('z-index', -10);
prevImg.addClass('active').css('z-index', 10);
currentdot.removeClass('activee');
prevdot.addClass('activee');
changeBg();
} else {
currentImg.removeClass('active').css('z-index', -10);
$('.slider-inner img:nth-child(' + m + ')').addClass('active').css('z-index', 10);
currentdot.removeClass('activee');
$('.dotcontainer div:nth-child(' + m + ')').addClass('activee');
}
});
//switch active dots
$(".dot").click(function (event) {
$('.activee').attr('class', 'dot');
$(this).attr('class', 'dot activee');
var aktkrop = $(".activee").attr("id");
var fotoa = $('.slider-inner .active').attr("id");
$(".active").removeClass("active");
$("#" + aktkrop).attr("class", "active")
});
//temp shadowbox temporary solution
$('.btn').on('click', function () {
$(".boxx").css("display", "block");
});
$('.close').on('click', function () {
$(".boxx").css("display", "none");
});
document.addEventListener('keydown',function(e){
if (e.keyCode === 37) {
prevImage();
} else if(e.keyCode === 39) {
nextImage();
}
});
body {
font-family: "Arial", sans-serif;
font-size: 14px;
color: #fff;
background-repeat: no-repeat;
background-attachment: fixed;
background-position: center;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
margin: 0;
padding: 0;
}
.bg{
z-index: -2;
position: absolute;
width: 100%;
height: 100%;
filter: blur(30px);
-webkit-filter: blur(30px);
background-repeat: no-repeat;
background-attachment: fixed;
background-position: center;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
margin: 0;
padding: 0;
}
.blackshadow{
z-index: -1;
position: absolute;
width: 100%;
height: 100%;
background-color: black;
opacity: 0.6;
}
a {
color: #fff;
text-decoration: none;
}
h1 {
text-align: center;
}
.container {
width: 540px;
margin: 40px auto;
overflow: auto;
}
.slider-inner {
width: 500px;
height: 300px;
position: relative;
overflow: hidden;
float: left;
padding: 3px;
border: #666 solid 1px;
}
.slider-inner img {
display: none;
width: 500px;
height: 300px;
}
.slider-inner img.active {
display: inline-block;
}
.prev,
.next {
float: left;
margin-top: 130px;
cursor: pointer;
}
.prev {
position: relative;
margin-right: -45px;
z-index: 100;
}
.next {
position: relative;
margin-left: -45px;
z-index: 100;
}
.buba {
display: flex;
align-items: center;
justify-content: center;
}
.dotcontainer {
position: relative;
display: flex;
flex-direction: row;
align-items: center;
align-items: center;
justify-content: center;
}
.dot {
cursor: pointer;
margin: 5px;
width: 20px;
height: 20px;
background-color: gray;
border-radius: 50%;
text-align: center;
justify-content: center;
color: black;
font-weight: 800;
}
.activee {
background-color: white;
}
.boxx {
width: 100%;
height: 100%;
background-color: black;
opacity: 0.6;
position: fixed;
z-index: 11;
margin: 0;
padding: 0;
display: none;
}
.close {
margin-left: 300px;
margin-top: 300px;
z-index: 11;
}
<html>
<head>
<title>Page Title</title>
<meta charset="UTF-8">
<meta name="viewport" content="initial-scale=1.0">
<link rel="stylesheet" href="style.css">
<script src="https://code.jquery.com/jquery-3.1.1.js" integrity="sha256-16cdPddA6VdVInumRGo6IbivbERE8p7CQR3HzTBuELA="
crossorigin="anonymous"></script>
</head>
<body>
<div class="bg"></div>
<div class="blackshadow"></div>
<div class="boxx">
<div class="closee">
<button class="close">Close</button>
</div>
</div>
<button class="btn">Kliknij</button>
<div class="container">
<h1>JQSlider</h1>
<div class="slider-outer">
<img src="http://www.fotem.pl/data/7d87e07a3066629171add66003d.png" id="prev" class="prev" alt="Prev">
<div class="slider-inner">
<img src="https://cdn.pixabay.com/photo/2018/01/14/23/12/nature-3082832_1280.jpg" class="active">
<img src="https://cdn.pixabay.com/photo/2015/12/01/20/28/green-1072828_1280.jpg">
<img src="https://cdn.pixabay.com/photo/2015/04/23/22/00/tree-736885_1280.jpg">
<img src="https://cdn.pixabay.com/photo/2015/06/19/21/24/the-road-815297_1280.jpg">
<img src="https://cdn.pixabay.com/photo/2015/01/28/23/35/landscape-615429_1280.jpg">
<img src="https://cdn.pixabay.com/photo/2019/09/30/14/51/squirrel-4515962_1280.jpg">
<img src="https://cdn.pixabay.com/photo/2016/07/22/16/29/fog-1535201_1280.jpg">
<img src="https://cdn.pixabay.com/photo/2016/11/23/13/48/beach-1852945_1280.jpg">
</div>
<img src="http://www.fotem.pl/data/6f1498615d84ca14dbf0de784bd.png" id="next" class="next" alt="Next">
</div>
</div>
<div class="dotcontainer">
</div>
</body>
<script type="text/javascript" src="script.js">
</script>
</html>
Thank you in advance.
Code:
https://codepen.io/odzeradodeveloperajava/pen/EMLbzz

The background did not change as the source variable was not up-to date with the image src. You will need to ensure, that the source is not only declared once, but the value in it will always be updated on every event.
The keyup event handler is throwing exceptions as it cannot access the nextImage() and prevImage() methods. You will need to separate the methods and re-use them when needed as callBackFunction or just call it directly:
function prevImage() {
// code inside
}
function nextImage() {
// code inside
}
$('.next').on('click', nextImage);
$('.prev').on('click', prevImage);
document.addEventListener('keyup', function (e) {
if (e.keyCode === 37) {
prevImage();
} else if (e.keyCode === 39) {
nextImage();
}
});
I've made several changes to the example you've shared. Here is a working Pen: https://codepen.io/attila-antal/pen/KKKVGEd

first of all you have to declare your function nextImage and prevImage outside of the event listener. for example:
function nextImage() {
// your code
}
$('.next').on('click', nextImage);
The background does not change because you have to pass new source to your function. for example:
function changeBg(source) {
// your code
}
When you want to invoke changeBg function you should pass new source: for example: changeBg(newImageUrl);

Jquery effect function call not working in javascript

I have a code which displays congradulations and displays stars popping out when body loads in a blue screen for for a timeout of 4000
when body loads it calls a function animatecongrat() which has two functions in it given below
The text congradulations is animated in function animatetext(), and stars animated in animateblobs()
My problem is text congradulation is animated and bluescreen appears for a timeout of 4000 but stars ( var numberOfStars = 20; in blob) are not appearing and animated in blue screen.
How to solve this? How do i achieve this effect?
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src='http://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js'></script>
<script src='http://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js'></script>
<script>
var timeOut;
function animateCongrat()
{
debugger;
$('.congrats').show();
clearTimeout(timeOut);
addBlueBody();
reset();
var numberOfStars = 20;
for (var i = 0; i < numberOfStars; i++) {
$('.congrats').append('<div class="blob fa fa-star ' + i + '"></div>');
}
animateText();
animateBlobs();
hideCongratAndBlueBody();
}
function addBlueBody() {
$('body').addClass('bodyblue');
$('#2').hide();
$('.hiddenimage').show();
}
function hideCongratAndBlueBody() {
timeOut = setTimeout(() => {
$('.congrats').hide();
$('body').removeClass('bodyblue');
}, 4000);
}
function reset() {
$.each($('.blob'), function(i) {
TweenMax.set($(this), {
x: 0,
y: 0,
opacity: 1
});
});
TweenMax.set($('h1'), {
scale: 1,
opacity: 1,
rotation: 0
});
}
function animateText() {
TweenMax.from($('h1'), 0.8, {
scale: 0.4,
opacity: 0,
rotation: 15,
ease: Back.easeOut.config(4),
});
}
function animateBlobs() {
debugger;
var xSeed = _.random(500, 500);
debugger;
var ySeed = _.random(300, 300);
$.each($('.blob'), function(i) {
var $blob = $(this);
var speed = _.random(1, 5);
var rotation = _.random(5, 100);
var scale = _.random(0.8, 1.5);
var x = _.random(-xSeed, xSeed);
var y = _.random(-ySeed, ySeed);
TweenMax.to($blob, speed, {
x: x,
y: y,
ease: Power1.easeOut,
opacity: 0,
rotation: rotation,
scale: scale,
onStartParams: [$blob],
onStart: function($element) {
$element.css('display', 'block');
},
onCompleteParams: [$blob],
onComplete: function($element) {
$element.css('display', 'none');
}
});
});
}
#font-face {
font-family: 'Sigmar One';
font-style: normal;
font-weight: 400;
src: local('Sigmar One Regular'), local('SigmarOne-Regular'), url(https: //fonts.gstatic.com/s/sigmarone/v8/co3DmWZ8kjZuErj9Ta3do6Tpow.ttf) format('truetype');
}
#import url(https: //fonts.googleapis.com/css?family=Sigmar+One);
body {
overflow: hidden;
}
.dashed {
border: 2px dashed #999 !important;
}
.bodyblue {
background: #3da1d1;
color: #fff;
width: 0.3vw;
height: 0.5vh;
}
.congrats {
position: absolute;
top: 140px;
width: 550px;
height: 100px;
padding: 20px 10px;
text-align: center;
margin: 0 auto;
left: 0;
right: 0;
display: none;
}
h1 {
transform-origin: 50% 50%;
font-size: 50px;
font-family: 'Sigmar One', cursive;
cursor: pointer;
z-index: 2;
text-align: center;
width: 100%;
position: absolute;
top:-10.5vh;
left: 0.3vw;
}
.blob {
height: 50px;
width: 50px;
color: #ffcc00;
position: absolute;
top: 45%;
left: 45%;
z-index: 1;
font-size: 30px;
display: none;
}
.heading{
margin-left:20%;
margin-right:20%;
margin-top:-2%;
}
.text {
padding: 20px;
margin:7 px;
margin-top:10px;
color:white;
font-weight:bold;
text-align:center;
}
body{
background-image:
background-size: 100vw 100vh;
}
.next{
margin-right:50%;
margin-left:50%;
margin-bottom:10%;
float:right;
}
ul{
-moz-border-radius: 50%;
-webkit-border-radius: 50%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body onload="animateCongrat();">
<div class="congrats">
<h1>Congratulations!</h1>
</div>
</body>

Skrollr image flickers and some images doesnt load in chrome

I am using Skrollr librabry. In the start it works fine,but as I'm scrolling down,I am experiencing flickering and images do not load. The content of my website are just images. Works fine on firefox, but not on Chrome. Could you please help me. I am using approximately 190 images. Is that an issue?
I am using async calls to fetch the data,and every image is being loaded before the skrollr is rendered.
Here's my working example : https://jsfiddle.net/if_true/v1mLhutc/7/
html
<body>
<div id="fakeloader"></div>
<div style="transform: translate3d(0,0,0);"></div>
<div class="DESKScreen">
<div id="info" hidden="hidden">0</div>
<section id="slide">
<div class="bcg"></div>
</section>
</div>
</body>
CSS
*,:before,:after {
-moz-box-sizing:border-box;
-webkit-box-sizing:border-box;
box-sizing:border-box;
-webkit-backface-visibility:hidden;
backface-visibility: hidden;
}
#info{
position: fixed;
top: 20px;
left: 20px;
background-color: rgba(0, 0, 0, 0.5);
color: #fff;
padding: 20px;
z-index: 9999;
}
body {
margin: 0;
width: 100%;
height: 100%;
}
html{
width: 100%;
height: 100%;
}
section {
width: 100%;
max-width: 100%;
height: 100%;
position: fixed;
left: 0;
right: 0;
margin: auto;
}
#slide .bcg {
height: 100%;
width: 100%;
background-size: 100%;
background-position: center top;
background-attachment: fixed;
position: absolute;
transform:translateZ(0)
}
.img{
background-size: cover;
background-repeat: no-repeat;
background-position: center;
display: table;
margin: auto;
max-height: 100vh !important;
height: 100% !important;
}
.item {
width: 100%;
position: absolute;
opacity: 1;
}
`Js`
$(document).ready(function() {
DivImage("sup");
var s = skrollr.init({
render: function(data) {
console.log(data.curTop);
}
});
//Check the screen size.
(function() {
if (screen.width < 768) {
$("#fullpage").fullpage({
//scrollingSpeed: 0,
});
$(".DESKScreen").css("display", "none");
} else if (screen.width > 768) {
$(".MObileScreen").css("display", "none");
}
})();
//Fakeloader for the loadtime
function loader() {
$("#fakeloader").fakeLoader({
timeToHide: 4000,
bgColor: "#e74c3c",
spinner: "spinner2"
});
}
loader();
});
function DivImage(name) {
//console.log(name);
//a counter to set for div id
let counter = 0;
//create the urls based on a nr
var Images = makeUrls();
//first create the div and pass the counter to it
CreateDiv(Images);
}
function makeUrls() {
let base = "images/";
let rest = ".jpg";
let result = [];
for (let i = 0; i < 191; i++) {
let baseNr = 1 + i;
if (baseNr === 2000) {
console.log("base");
} else {
result.push(base + baseNr + rest);
}
}
return result;
}
function CreateDiv(images) {
// debugger;
var from = 0,
to = 0;
let result = [];
for (let i of images) {
var newDiv = $('<div class="img-div"></div>');
newDiv.css({
backgroundImage: `url(${i})`
});
newDiv.attr("data--" + from + "-top", "opacity: 0;");
from += 125;
newDiv.attr("data--" + from + "-top", "opacity: 0;");
from += 125;
newDiv.attr("data--" + from + "-top", "opacity: 1;");
newDiv.attr("data-anchor-target", "#slide");
newDiv.attr("data-skrollr-decks-speed", "300");
$("#slide").append($(newDiv));
}
}