Develop Reference

disable scrolling untill animation is done

I have a simple animation and I want to disable scrolling on the website
until this animation is done, it should be like a loader basically
UPDATE
thank you so much, but I have an issue with that sorry for not mention because I'm using a fixed position on a container to be fixed to do smooth scrolling, so when I use 'fixed' position for any element it doesn't seem to stick in the same place here is the full code
html
<main id="app">
<div id="scroll-container" class="scroll-container">
<div class="loader">
<div class="loader__block"></div>
</div>
</div>
</main>
CSS
body {
overflow-x: hidden;
overflow-y: scroll;
background: $bg-color;
user-select: none;
font-family: 'Platform Regular';
}
#app {
overflow: hidden;
position: fixed;
height: 100vh;
width: 100vw;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
.scroll-container {
position: absolute;
overflow: hidden;
z-index: 10;
display: flex;
justify-content: center;
backface-visibility: hidden;
}
.loader {
width: 100vw;
height: 100vh;
position: absolute;
z-index: 999999;
overflow: hidden;
}
.loader__block {
position: absolute;
width: 0%;
height: 100vh;
background: #111111;
animation: go-left 4s cubic-bezier(.74, .06, .4, .92) forwards;
}
#keyframes go-left {
0% {
left: 0;
width: 0%;
}
50% {
left: 0;
width: 100%;
}
100% {
left: 100%;
width: 0;
}
these containers have a fixed position and overflow hidden because I'm making smooth page transition while scrolling and moving the 'y' position
here is also the js if it's going to help
function smoothScrolling() {
const html = document.documentElement;
const { body } = document;
const scroller = {
target: document.querySelector('#scroll-container'),
ease: 0.06, // <= scroll speed
endY: 0,
y: 0,
resizeRequest: 1,
scrollRequest: 0,
};
let requestId = null;
TweenLite.set(scroller.target, {
rotation: 0.01,
force3D: true,
});
function updateScroller() {
const resized = scroller.resizeRequest > 0;
if (resized) {
const height = scroller.target.clientHeight;
body.style.height = `${height}px`;
scroller.resizeRequest = 0;
}
const scrollY = window.pageYOffset || html.scrollTop || body.scrollTop || 0;
scroller.endY = scrollY;
scroller.y += (scrollY - scroller.y) * scroller.ease;
if (Math.abs(scrollY - scroller.y) < 0.05 || resized) {
scroller.y = scrollY;
scroller.scrollRequest = 0;
}
TweenLite.set(scroller.target, {
y: -scroller.y,
});
requestId = scroller.scrollRequest > 0 ? requestAnimationFrame(updateScroller) : null;
}
function onScroll() {
scroller.scrollRequest += 1;
if (!requestId) {
requestId = requestAnimationFrame(updateScroller);
}
}
function onResize() {
scroller.resizeRequest += 1;
if (!requestId) {
requestId = requestAnimationFrame(updateScroller);
}
}
function onLoad() {
updateScroller();
window.focus();
window.addEventListener('resize', onResize);
document.addEventListener('scroll', onScroll);
}
window.addEventListener('load', onLoad);
}

Use the CSS rule position: fixed; on your div with class loader which makes it to always stay in the same place even if the page is scrolled.
as so:
.loader {
width: 100vw;
height: 100vh;
position: absolute;
z-index: 999999;
overflow: hidden;
position: fixed;
}
.loader__block {
position: absolute;
width: 0%;
height: 100vh;
background: #111111;
animation: go-left 4s cubic-bezier(.74, .06, .4, .92) forwards;
}
#keyframes go-left {
0% {
left: 0;
width: 0%;
}
50% {
left: 0;
width: 100%;
}
100% {
left: 100%;
width: 0;
}
}
<main id="app">
<div id="scroll-container" class="scroll-container">
<div class="loader">
<div class="loader__block"></div>
</div>
</div>

How to position green div under the red one?

Below is the demo code which fully represent the actual code
I've placed some content on the red div which I want users to see when the page loads. The problem is that I'm using scrollmagic.js animations on this page. Everything was working perfect but when I tried to use smoothscroll, The .setPin fuctions of scrollmagic stopped working. The animations are still working but the red div is being scrolled with the other divs. I want the red div to stay on it's place until the animation don't finish. The smoothscroll pushes the red div along the other divs before the animation completes.
Can you please help me placing green and blue div under the red one while the red div's position is fixed and stays responsive so that everything will work on all screen sizes?
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Test Code</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.20.2/TweenMax.min.js"></script>
</head>
<style>
.viewport {
overflow: hidden;
position: fixed;
height: 100%;
width: 100%;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
.scroll-container {
position: absolute;
overflow: hidden;
z-index: 10;
display: flex;
justify-content: center;
backface-visibility: hidden;
transform-style: preserve-3d;
}
.div1 {
width: 70%;
height: 70vh;
border: 5px solid red;
position: fixed;
transform: translateX(20%);
}
.div2 {
width: 70%;
height: 70vh;
border: 5px solid green;
transform: translateX(20%);
}
.div3 {
width: 70%;
height: 70vh;
border: 5px solid blue;
transform: translateX(20%);
}
</style>
<body>
<div class="div1"></div>
<div class="viewport">
<div id="scroll-container">
<div class="div2"></div>
<div class="div3"></div>
</div>
</div>
</body>
<script>
var html = document.documentElement;
var body = document.body;
var scroller = {
target: document.querySelector("#scroll-container"),
ease: 0.05, // <= scroll speed
endY: 0,
y: 0,
resizeRequest: 1,
scrollRequest: 0,
};
var requestId = null;
TweenLite.set(scroller.target, {
rotation: 0.01,
force3D: true
});
window.addEventListener("load", onLoad);
function onLoad() {
updateScroller();
window.focus();
window.addEventListener("resize", onResize);
document.addEventListener("scroll", onScroll);
}
function updateScroller() {
var resized = scroller.resizeRequest > 0;
if (resized) {
var height = scroller.target.clientHeight;
body.style.height = height + "px";
scroller.resizeRequest = 0;
}
var scrollY = window.pageYOffset || html.scrollTop || body.scrollTop || 0;
scroller.endY = scrollY;
scroller.y += (scrollY - scroller.y) * scroller.ease;
if (Math.abs(scrollY - scroller.y) < 0.05 || resized) {
scroller.y = scrollY;
scroller.scrollRequest = 0;
}
TweenLite.set(scroller.target, {
y: -scroller.y
});
requestId = scroller.scrollRequest > 0 ? requestAnimationFrame(updateScroller) : null;
}
function onScroll() {
scroller.scrollRequest++;
if (!requestId) {
requestId = requestAnimationFrame(updateScroller);
}
}
function onResize() {
scroller.resizeRequest++;
if (!requestId) {
requestId = requestAnimationFrame(updateScroller);
}
}
</script>
</html>

Use z-index to place the red div above the other divs:
https://www.w3schools.com/cssref/pr_pos_z-index.asp
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Test Code</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.20.2/TweenMax.min.js"></script>
</head>
<style>
.viewport {
overflow: hidden;
position: fixed;
height: 100%;
width: 100%;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
.scroll-container {
position: absolute;
overflow: hidden;
z-index: 10;
display: flex;
justify-content: center;
backface-visibility: hidden;
transform-style: preserve-3d;
}
.div1 {
width: 70%;
height: 70vh;
border: 5px solid red;
position: fixed;
transform: translateX(20%);
z-index: 10;
}
.div2 {
width: 70%;
height: 70vh;
border: 5px solid green;
transform: translateX(20%);
}
.div3 {
width: 70%;
height: 70vh;
border: 5px solid blue;
transform: translateX(20%);
}
</style>
<body>
<div class="div1"></div>
<div class="viewport">
<div id="scroll-container">
<div class="div2"></div>
<div class="div3"></div>
</div>
</div>
</body>
<script>
var html = document.documentElement;
var body = document.body;
var scroller = {
target: document.querySelector("#scroll-container"),
ease: 0.05, // <= scroll speed
endY: 0,
y: 0,
resizeRequest: 1,
scrollRequest: 0,
};
var requestId = null;
TweenLite.set(scroller.target, {
rotation: 0.01,
force3D: true
});
window.addEventListener("load", onLoad);
function onLoad() {
updateScroller();
window.focus();
window.addEventListener("resize", onResize);
document.addEventListener("scroll", onScroll);
}
function updateScroller() {
var resized = scroller.resizeRequest > 0;
if (resized) {
var height = scroller.target.clientHeight;
body.style.height = height + "px";
scroller.resizeRequest = 0;
}
var scrollY = window.pageYOffset || html.scrollTop || body.scrollTop || 0;
scroller.endY = scrollY;
scroller.y += (scrollY - scroller.y) * scroller.ease;
if (Math.abs(scrollY - scroller.y) < 0.05 || resized) {
scroller.y = scrollY;
scroller.scrollRequest = 0;
}
TweenLite.set(scroller.target, {
y: -scroller.y
});
requestId = scroller.scrollRequest > 0 ? requestAnimationFrame(updateScroller) : null;
}
function onScroll() {
scroller.scrollRequest++;
if (!requestId) {
requestId = requestAnimationFrame(updateScroller);
}
}
function onResize() {
scroller.resizeRequest++;
if (!requestId) {
requestId = requestAnimationFrame(updateScroller);
}
}
</script>
</html>

Adapt image movement to window size in javascript

I made an animation on my website which moves if clicked on. The problem is that on the javascript function that manage it, I gave a series of coordinates which fits only if the browser is in full screen. Here are some example:
https://imgur.com/a/Ug6eQlp and https://imgur.com/a/bPrVg5y
This is my javascript function:
function init(){
imgObj = document.getElementById('minion');
immagine = document.getElementById('immagine_minion');
imgObj.style.position= 'absolute';
imgObj.style.top = '240px';
imgObj.style.left = '-300px';
imgObj.style.visibility='hidden';
appaer();
}
And this, for example, the method which moves it as soon as I open the page:
function appaer(){
immagine.src="../img/minion_dx.png";
if (parseInt(imgObj.style.left)<200) {
imgObj.style.left = parseInt(imgObj.style.left) + 5 + 'px';
imgObj.style.visibility='visible';
animate = setTimeout(appaer,20);
} else
stop();
}
How can I make it fit for every screen resolution?

this should get you started
var stage_number = 0
function go_to_next_stage() {
stage_number++
var stage = document.getElementById("stage" + stage_number)
me.style.left = getComputedStyle(stage).getPropertyValue("left")
me.style.top = getComputedStyle(stage).getPropertyValue("top")
if (stage_number > 3) stage_number = 0
}
img {
position: absolute;
left: -100px;
top: 0;
transition: left 2s, top 2s
}
.stage {
width: 100px;
height: 100px;
border: 1px solid black;
position: absolute;
}
#stage1 {
left: 0;
top: 0;
}
#stage2 {
right: 0;
top: 0;
}
#stage3 {
right: 0;
bottom: 0;
}
#stage4 {
left: 0;
bottom: 0;
}
div {
width: 100vw;
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
}
<img id="me" src="https://de.gravatar.com/userimage/95932142/195b7f5651ad2d4662c3c0e0dccd003b.png?size=100" />
<div onclick="go_to_next_stage()">click anywhere to continue</div>
<div class="stage" id="stage1">
</div>
<div class="stage" id="stage2">
</div>
<div class="stage" id="stage3">
</div>
<div class="stage" id="stage4">
</div>

mousedown and touchstart not registering on mobile devices

I have created the following simple image comparison slider - modified from the version on w3schools (I know my mistake to use their code).
This all works fine on a desktop but when I try to use it on a mobile, nothing happens - it doesn't even register the console.log on the mousedown/touchstart (when I press on the slider button with my finger).
I was wondering if anyone could spot anything obvious with why it isn't working on mobile devices
(() => {
$.fn.imageComparisonSlider = function() {
var returnValue = this.each((index, item) => {
var $container = $(this);
var $overlay = $container.find('.image-comparison-slider__bottom-image');
var $slider = $('<span class="image-comparison-slider__slider"></span>');
var $window = $(window);
var touchStarted = false;
var width = $container.outerWidth();
$container.prepend($slider);
$container.on('mousedown touchstart', '.image-comparison-slider__slider', event => {
event.preventDefault();
console.log('touchstart');
touchStarted = true;
});
$window.on("mousemove touchmove", windowEvent => {
if (touchStarted) {
// get the cursor's x position:
let pos = getCursorPos(windowEvent);
// prevent the slider from being positioned outside the image:
if (pos < 0) pos = 0;
if (pos > width) pos = width;
// execute a function that will resize the overlay image according to the cursor:
slide(pos);
}
});
$window.on('mouseup touchend', event => {
event.preventDefault();
touchStarted = false;
});
function getCursorPos(e) {
var thisEvent = e || window.event;
// calculate the cursor's x coordinate, relative to the image
return thisEvent.pageX - $container.offset().left;
}
function slide(x) {
// set the width of the overlay
$overlay.width(width - x);
// position the slider
$slider[0].style.left = x + 'px';
}
function resetSlider() {
$overlay.width('50%');
$slider[0].style.left = $overlay.width() + 'px'
width = $container.outerWidth();
}
});
return returnValue;
};
})($);
$('.image-comparison-slider__container').imageComparisonSlider();
.image {
display: block;
width: 100%;
}
.image-comparison-slider__title {
text-align: center;
}
.image-comparison-slider__container,
.image-comparison-slider__image-holder {
position: relative;
}
.image-comparison-slider__bottom-image {
position: absolute;
overflow: hidden;
top: 0;
right: 0;
bottom: 0;
z-index: 1;
width: 50%;
}
.image-comparison-slider__caption {
position: absolute;
padding: 1rem;
color: white;
background: rgba(0, 0, 0, 0.6);
z-index: 2;
white-space: nowrap;
}
.image-comparison-slider__top-image .image-comparison-slider__caption {
top: 0;
left: 0;
}
.image-comparison-slider__bottom-image .image-comparison-slider__caption {
bottom: 0;
right: 0;
}
.image-comparison-slider__image {
display: block;
z-index: 1;
}
.image-comparison-slider__bottom-image .image {
position: absolute;
right: 0;
top: 0;
height: 100%;
width: auto;
}
.image-comparison-slider__slider {
position: absolute;
z-index: 3;
cursor: ew-resize;
/*set the appearance of the slider:*/
width: 50px;
height: 50px;
background-color: rgba(255, 96, 38, 0.8);
border-radius: 50%;
top: 50%;
left: 50%;
display: flex;
justify-content: center;
align-items: center;
transform: translate(-50%, -50%);
}
.image-comparison-slider__slider:after {
content: "< >";
color: white;
font-weight: bold;
font-size: 25px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="image-comparison-slider__container">
<div class="image-comparison-slider__image-holder image-comparison-slider__top-image">
<img src="https://www.fillmurray.com/g/400/300" alt="A test image 1" class="image">
<div class="image-comparison-slider__caption">Left Image</div>
</div>
<div class="image-comparison-slider__image-holder image-comparison-slider__bottom-image">
<img src="https://www.fillmurray.com/400/300" alt="A test image 2" class="image">
<div class="image-comparison-slider__caption">Right Image</div>
</div>
</div>
Fiddle link for code

Ok have managed to fix this - the touch wasn't registering because of the transform so I changed that and just used negative margin as the button was a fixed size.
I then had to fix the thisEvent.pageX for android - so did a check with isNaN and then set it to e.originalEvent.touches[0].pageX if it was true.
Working version:
(() => {
$.fn.imageComparisonSlider = function() {
var returnValue = this.each((index, item) => {
var $container = $(this);
var $overlay = $container.find('.image-comparison-slider__bottom-image');
var $slider = $('<span class="image-comparison-slider__slider"></span>');
var $window = $(window);
var touchStarted = false;
var width = $container.outerWidth();
$container.prepend($slider);
$container.on('mousedown touchstart', '.image-comparison-slider__slider', event => {
event.preventDefault();
console.log('touchstart');
touchStarted = true;
});
$window.on("mousemove touchmove", windowEvent => {
if (touchStarted) {
// get the cursor's x position:
let pos = getCursorPos(windowEvent);
// prevent the slider from being positioned outside the image:
if (pos < 0) pos = 0;
if (pos > width) pos = width;
// execute a function that will resize the overlay image according to the cursor:
slide(pos);
}
});
$window.on('mouseup touchend', event => {
event.preventDefault();
touchStarted = false;
});
function getCursorPos(e) {
var thisEvent = e || window.event;
let xVal = thisEvent.pageX;
if (isNaN(xVal)) {
xVal = e.originalEvent.touches[0].pageX;
}
// calculate the cursor's x coordinate, relative to the image
return xVal - $container.offset().left;
}
function slide(x) {
// set the width of the overlay
$overlay.width(width - x);
// position the slider
$slider[0].style.left = x + 'px';
}
function resetSlider() {
$overlay.width('50%');
$slider[0].style.left = $overlay.width() + 'px'
width = $container.outerWidth();
}
});
return returnValue;
};
})($);
$('.image-comparison-slider__container').imageComparisonSlider();
.image {
display: block;
width: 100%;
}
.image-comparison-slider__title {
text-align: center;
}
.image-comparison-slider__container,
.image-comparison-slider__image-holder {
position: relative;
}
.image-comparison-slider__bottom-image {
position: absolute;
overflow: hidden;
top: 0;
right: 0;
bottom: 0;
z-index: 1;
width: 50%;
}
.image-comparison-slider__caption {
position: absolute;
padding: 1rem;
color: white;
background: rgba(0, 0, 0, 0.6);
z-index: 2;
white-space: nowrap;
}
.image-comparison-slider__top-image .image-comparison-slider__caption {
top: 0;
left: 0;
}
.image-comparison-slider__bottom-image .image-comparison-slider__caption {
bottom: 0;
right: 0;
}
.image-comparison-slider__image {
display: block;
z-index: 1;
}
.image-comparison-slider__bottom-image .image {
position: absolute;
right: 0;
top: 0;
height: 100%;
width: auto;
}
.image-comparison-slider__slider {
position: absolute;
z-index: 3;
cursor: ew-resize;
width: 50px;
height: 50px;
background-color: rgba(255, 96, 38, 0.8);
border-radius: 50%;
top: 50%;
left: 50%;
display: flex;
justify-content: center;
align-items: center;
margin: -25px 0 0 -25px;
}
.image-comparison-slider__slider:after {
content: "< >";
color: white;
font-weight: bold;
font-size: 25px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="image-comparison-slider__container">
<div class="image-comparison-slider__image-holder image-comparison-slider__top-image">
<img src="https://www.fillmurray.com/g/400/300" alt="A test image 1" class="image">
<div class="image-comparison-slider__caption">Left Image</div>
</div>
<div class="image-comparison-slider__image-holder image-comparison-slider__bottom-image">
<img src="https://www.fillmurray.com/400/300" alt="A test image 2" class="image">
<div class="image-comparison-slider__caption">Right Image</div>
</div>
</div>

How to move two different images across the screen using JavaScript

I have been challenged with a website that requires me to make two images race at random across the screen to a finish line. I am required to make this happen using JavaScript. Unfortunately I have ran into some trouble here making this happen.
I have the script that allows a div container and an object "animate" (which is a small square) to move across the screen to the right as I am supposed to do. My question comes into play when trying to do this to two different images.
The goal is to have the animation I have created to apply to the images, I cannot figure out how to apply the functions to the images already placed on the page to make it seem as if they are racing on random intervals across the page to the finish line.
I understand the concept of the animation and the JavaScript behind it, I just dont understand how to make it apply to an image, and more than 1 image at that.
Please advise.
Here is my code that I am using: you can see that I left my demo animation on the page, and the two images I am looking to apply it to.
function myMove()
{
var elem = document.getElementById("animate");
var pos = 0;
var id = setInterval(frame, 5);
function frame()
{
if (pos == 350)
{
clearInterval(id);
}
else
{
pos++;
elem.style.left = pos + 'px';
}
}
}
<div id="traffic-light">
<div id="stopLight" class="bulb"></div>
<div id="yeildLight" class="bulb"></div>
<div id="goLight" class="bulb"></div>
</div>
<style>
body {
overflow: hidden;
}
#bluefish {
position: absolute;
top: 31pc;
width: 17pc;
left: -.5pc;
}
#turtle {
position: absolute;
width: 15pc;
top: 20pc;
}
body {
background-image: url("http://www.hpud.org/wp-content/uploads/2015/08/WaterBackground2.jpg")
}
.finishline {
position: absolute;
right: -12pc;
top: 18pc;
}
#traffic-light {
height: 10pc;
width: 4pc;
background-color: #333;
border-radius: 20pc;
position: absolute;
}
.bulb {
height: 2pc;
width: 2pc;
background-color: #111;
border-radius: 50%;
margin: 15px auto;
transition: background 500ms;
}
#container {
width: 400px;
height: 400px;
position: relative;
background: yellow;
}
#animate {
width: 50px;
height: 50px;
position: absolute;
background: red;
}
</style>
<img id="bluefish" src="http://clipartist.net/openclipart.org/2013/July/Blue_Fish_Goldfish.png">
<img id="turtle" src="http://www.clipartkid.com/images/386/turtle-free-stock-photo-illustration-of-a-green-sea-turtle-uPgZrm-clipart.png">
<img src="https://t1.rbxcdn.com/877010da8ce131dfcb3fa6a9b07fea89" class="finishline">
<p>
<button onclick="myMove()">Click Me</button>
</p>
<div id="container">
<div id="animate"></div>
</div>

Try this one:
function myMove()
{
var elemBluefish = document.getElementById("bluefish");
var elemBluefishWin = document.getElementById("bluefishwin");
var elemTurtle = document.getElementById("turtle");
var elemTurtleWin = document.getElementById("turtlewin");
var posBluefish = 0;
var posTurtle = 0;
var hasWinner = false;
elemBluefishWin.style.display = 'none';
elemTurtleWin.style.display = 'none';
var id = setInterval(frame, 5);
function frame()
{
if(posBluefish >= 350 && posTurtle >= 350)
{
clearInterval(id);
return;
}
if(posBluefish < 350)
{
posBluefish += Math.round(Math.random()*10);
if(posBluefish >= 350)
{
posBluefish = 350;
if(!hasWinner){
hasWinner = true;
elemBluefishWin.style.display = 'unset';
}
}
elemBluefish.style.left = posBluefish + 'px';
}
if(posTurtle < 350)
{
posTurtle += Math.round(Math.random()*10);
if(posTurtle >= 350)
{
posTurtle = 350;
if(!hasWinner){
hasWinner = true;
elemTurtleWin.style.display = 'unset';
}
}
elemTurtle.style.left = posTurtle + 'px';
}
}
}
<div id="traffic-light">
<div id="stopLight" class="bulb"></div>
<div id="yeildLight" class="bulb"></div>
<div id="goLight" class="bulb"></div>
</div>
<style>
body {
overflow: hidden;
}
#bluefish {
position: absolute;
top: 31pc;
width: 17pc;
left: -.5pc;
}
#turtle {
position: absolute;
width: 15pc;
top: 20pc;
}
#bluefishwin {
position: absolute;
right: 1pc;
top: 31pc;
display: none;
}
#turtlewin {
position: absolute;
right: 1pc;
top: 20pc;
display: none;
}
body {
background-image: url("http://www.hpud.org/wp-content/uploads/2015/08/WaterBackground2.jpg")
}
.finishline {
position: absolute;
right: -12pc;
top: 18pc;
}
#traffic-light {
height: 10pc;
width: 4pc;
background-color: #333;
border-radius: 20pc;
position: absolute;
}
.bulb {
height: 2pc;
width: 2pc;
background-color: #111;
border-radius: 50%;
margin: 15px auto;
transition: background 500ms;
}
/*#container {
width: 400px;
height: 400px;
position: relative;
background: yellow;
}
#animate {
width: 50px;
height: 50px;
position: absolute;
background: red;
}*/
</style>
<img id="bluefish" src="http://clipartist.net/openclipart.org/2013/July/Blue_Fish_Goldfish.png">
<img id="turtle" src="http://www.clipartkid.com/images/386/turtle-free-stock-photo-illustration-of-a-green-sea-turtle-uPgZrm-clipart.png">
<img src="https://t1.rbxcdn.com/877010da8ce131dfcb3fa6a9b07fea89" class="finishline">
<img id="bluefishwin" src="http://a.dryicons.com/images/icon_sets/coquette_part_3_icons_set/png/128x128/prize_winner.png">
<img id="turtlewin" src="http://a.dryicons.com/images/icon_sets/coquette_part_3_icons_set/png/128x128/prize_winner.png">
<p>
<button onclick="myMove()">Click Me</button>
</p>
<div id="container">
<div id="animate"></div>
</div>
It gets an element for each image and adds every 5ms a random amount of pixels (between 0 and 9) to each pos of image.
If both "racers" reached the target (350px) the interval is cleared and the race is over.
The winner gets an image displayed at the finish line.

an example:
function startRace() {
animateRacer("player1", true);
animateRacer("player2", true);
}
function animateRacer(playerId, reset) {
var elem = document.getElementById(playerId);
var pos = parseInt(elem.style.left, 10);
if (isNaN(pos) || reset) {
pos = 0;
}
//console.log(playerId + ': ' + pos);
if (pos < 450) {
pos += randStep(3);
elem.style.left = pos + 'px';
setTimeout('animateRacer("' + playerId + '")', randStep(5));
}
}
function randStep(max) {
var min = 1;
return Math.floor(Math.random() * (max - min)) + min;
}
body {
overflow: hidden;
}
#container {
width: 500px;
height: 160px;
position: relative;
background-color: yellow;
}
.player {
width: 50px;
height: 50px;
background-color: gray;
position: relative;
}
#player1 {
background-color: red;
top: 20px;
}
#player2 {
background-color: blue;
top: 40px;
}
<p>
<button onclick="startRace()">Start Race</button>
</p>
<div id="container">
<div id="player1" class="player"></div>
<div id="player2" class="player"></div>
</div>

function mover(obj) {
this.obj=obj;
this.pos = 0;
this.id = setInterval(this.frame, 5);
}
mover.prototype.frame=function() {
if (this.pos == 350) {
clearInterval(this.id);
} else {
this.pos++;
this.obj.style.left = this.pos + 'px';
}
}
}
Simply do:
img1=new mover(document.getElementById("pic1"));
You can repeat this with every image and you could store them into an array:
images=[];
function letsmove(){
images.push(new mover(someid));
...
}
And you can do this with all images on the site:
images=[];
function letsmove(){
domimages=document.getElementsByTagName("img");
domimages.forEach(function(img){
images.push(new mover(img));
});
}
}
See JS OOP and JS Prototyping for more explanation