I want to set the animation of the element while scrolling down the page. I want to use only JavaScript to achieve that.
I wanted it to work like this: There is no animation, but when you scroll down to second container, the JS sets the animation and the content inside the container is shown.
The problem is, when I load the page, there is no animation (That's good). When I scroll down, there is still no animation (That's bad!) but when I refresh the page with F5 while being on the bottom of the site, the animation shows up but still not showing my element with blue background.
Here is my full code for this part:
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
.main {
display: block;
margin: auto;
height: 1000px;
width: 100%;
background-color: grey;
}
.main-inner1 {
display: block;
margin: auto;
height: 600px;
width: 100%;
background-color: orange;
}
.main-inner2 {
display: block;
margin: auto;
height: 600px;
width: 100%;
background-color: green;
}
.main-inner2-container {
display: block;
position: relative;
height: 50px;
width: 200px;
overflow: hidden;
margin: auto;
}
.main-inner2-content1 {
display: block;
position: absolute;
top: 100%;
margin: auto;
height: 50px;
width: 200px;
background-color: blue;
}
#keyframes FadeIn {
{ from: top: 100%; }
{ to: top: 0; }
}
</style>
<script>
document.addEventListener("DOMContentLoaded", function(){
var y = window.scrollY;
var x = document.querySelector(".main-inner2-container").getBoundingClientRect().top;
if (y >= x) {
document.querySelector(".main-inner2-content1").style.animation = "FadeIn 1s linear 0s 1 forwards";
}
});
</script>
<body>
<div class="main">
<div class="main-inner1"></div>
<div class="main-inner2">
<div class="main-inner2-container">
<div class="main-inner2-content1">
</div>
</div>
</div>
</div>
I'm learning JS so it's important to me to not use any libraries :P
Thanks a lot
I modified your code a bit. You were listening for DOMContentLoaded event which is fired only once (after the DOM is completely loaded), instead of window scroll event.
window.onscroll = function() {
var y = window.scrollY;
var x = document.querySelector(".main-inner2-container").getBoundingClientRect().top;
if (y >= x) {
document.querySelector(".main-inner2-content1").style.animation = "FadeIn 1s linear 0s 1 forwards";
}
}
* {
margin: 0;
padding: 0;
}
.main {
display: block;
margin: auto;
height: 1000px;
width: 100%;
background-color: grey;
}
.main-inner1 {
display: block;
margin: auto;
height: 600px;
width: 100%;
background-color: orange;
}
.main-inner2 {
display: block;
margin: auto;
height: 600px;
width: 100%;
background-color: green;
}
.main-inner2-container {
display: block;
position: relative;
height: 50px;
width: 200px;
overflow: hidden;
margin: auto;
}
.main-inner2-content1 {
display: block;
position: absolute;
top: 100%;
margin: auto;
height: 50px;
width: 200px;
background-color: blue;
}
#keyframes FadeIn {
from { top: 100%; }
to {top: 0; }
}
<div class="main">
<div class="main-inner1"></div>
<div class="main-inner2">
<div class="main-inner2-container">
<div class="main-inner2-content1">
</div>
</div>
</div>
</div>
Also, your syntax for defining keyframe was incorrect. It is
#keyframes FadeIn {
from { top: 100%; }
to {top: 0; }
}
And not
#keyframes FadeIn {
{ from: top: 100%; }
{ to: top: 0; }
}
Related
This question already has answers here:
How To Get Font Size in HTML
(9 answers)
Closed 1 year ago.
I want to address to font-size to change the size of a ball when pressing keys, but in switch the program sees only size (instead of font-size) after a hyphen.
Task: Create a page that displays a balloon (using emoji https://emojipedia.org/balloon/). When you click the up arrow, the ball should inflate (increase) by 10 percent, and when you click the down arrow, it should inflate (decrease) by 10 percent.
Then finish the program as follows, if the ball is inflated to a certain size, it will explode. That is, you need to replace the emoji of the ball (balloon) with the emoji of the explosion (https://emojipedia.org/collision-symbol/). You need to remove the event handler (the explosion cannot be inflated or inflated)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<style>
html, body{
margin:0;
overflow:hidden;
}
#blueRect{
margin-left: auto;
margin-right: auto;
width:1000px;
height:1000px;
background-color: none;
font-size: 500px;
text-align: center;
cursor: default
}
.box1 {
position: relative;
margin-left: auto;
margin-right: auto;
top: auto;
bottom: auto;
height: 1500px;
width: 1000px;
}
.one {
height: 80%;
width: 80%;
position: absolute;
left: 0px;
top: 0px;
z-index: 1;
}
.two {
height: 80%;
width: 80%;
position: absolute;
left: 0px;
top: 0px;
visibility:hidden;
}
#second{
margin-left: auto;
margin-right: auto;
width:1000px;
height:1000px;
background-color: none;
font-size: 500px;
text-align: center;
cursor: default
}
</style>
</head>
<body>
<div class = "box1">
<div class = "one" id="blueRect">🎈</div>
<div class = "two" id="second">💥</div>
</div>
<script>
function moveRect(e){
var blueRect = document.getElementById("blueRect");
var cs = window.getComputedStyle(blueRect);
var size = parseInt(cs.style.fontSize);
switch(e.key)
{
case "ArrowUp":
blueRect.style.fontSize = size + 10 + "px"; /*setSize(size+10px)*/
break;
case "ArrowDown":
blueRect.style.fontSize = size - 10 + "px";
break;
}
}
addEventListener("keydown", moveRect);
if (size > 50px){
one.style.visibility = hidden;
two.style.visibility = visible;
}
</script>
</body>
</html>
You can use below codes with adding up your own functionality , below code is just to reference , make it use and develop accordingly based on your needs.Hope this may help. Codepen Demo.
var blueRect = document.getElementById("blueRect");
var size_val = window.getComputedStyle(blueRect,null).getPropertyValue("font-size");
var size = parseInt(size_val);
function moveRect(event){
//alert(event.type);
switch(event.type)
{
case "click":
var newSize = (size + 10);
size = newSize;
blueRect.style.fontSize = newSize +"px"; /*setSize(size+10px)*/
break;
}
}
blueRect.addEventListener("click", moveRect); // Put your arrowup and arrowdown similar to this here blueRect act as up similarly do it for down
html, body{
margin:0;
overflow:hidden;
}
#blueRect{
margin-left: auto;
margin-right: auto;
width:1000px;
height:1000px;
background-color: none;
font-size: 500px;
text-align: center;
cursor: default
}
.box1 {
position: relative;
margin-left: auto;
margin-right: auto;
top: auto;
bottom: auto;
height: 1500px;
width: 1000px;
}
.one {
height: 80%;
width: 80%;
position: absolute;
left: 0px;
top: 0px;
z-index: 1;
}
.two {
height: 80%;
width: 80%;
position: absolute;
left: 0px;
top: 0px;
visibility:hidden;
}
#second{
margin-left: auto;
margin-right: auto;
width:1000px;
height:1000px;
background-color: none;
font-size: 500px;
text-align: center;
cursor: default
}
<body>
<div class = "box1">
<div class = "one" id="blueRect">🎈</div>
</div>
</body>
I want to add a preloader to my website and I have this code:
<div class="loader" ></div>
<script>
document.addEventListener('DOMContentLoaded', function() {
jQuery(function($){
$('.loader').fadeOut('slow');
}); });
</script>
<style>
.elementor-element-edit-mode .loader{
display: none;
}
.loader {
position: fixed;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
z-index: 9999;
background: url('http://ibiza-bar.co.il/wp-content/uploads/2020/04/ibiza-logo.png') 50% 50% no-repeat #fff;
}
</style>
Instead of this simple fadeout effect, I want it to look like curtains closing, just like the following example:
Any idea how to achieve this unique fadeout effect based on the code I have?
Thank you!
Cover the background with a centered white box and let it collapse to 0 width.
setTimeout(() => {
$("#loader .logo").animate({ opacity: 0 }, 1000);
$("#loader .cover").animate({ width: "0%" }, 1000, () => {
$("#loader").hide(); // When animation is complete hide the element.
});
}, 1500);
#bg {
background: url('http://placekitten.com/630/195');
width: 630px;
height: 195px;
position: absolute;
}
#loader {
position: fixed;
height: 100%;
width: 100%;
display: flex;
justify-content: center;
align-items: center;
}
#loader .logo {
background: url('http://ibiza-bar.co.il/wp-content/uploads/2020/04/ibiza-logo.png');
background-repeat: no-repeat;
background-size: contain;
position: absolute;
width: 150px;
height: 150px;
}
#loader .cover {
background: #fff;
width: 100%;
height: 100%;
position: absolute;
}
body { margin: 0 }
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="bg"></div>
<div id="loader">
<div class="cover"></div>
<div class="logo"></div>
</div>
There are similar questions like this and this, but don't address this situation.
The goal is to slide a menu onto the screen with CSS translation when its parent is shown. However, showing the parent then applying the CSS class to trigger the translation happens instantly instead of over time. Effectively, there's no animation.
JavaScript could be used to slide the child element onto the screen, but the goal is to keep as much of the animation logic in CSS.
Setting the opacity to 0 doesn't work because we need the menu and its parent to not take any space or be part of the layout.
Codepen: https://codepen.io/Crashalot/pen/YzXmjYj
function toggleSidebar() {
$("#sidebar").toggleClass("show");
}
$("#button").on("click", function() {
toggleSidebar();
});
body {
margin: 0;
padding: 0;
}
#button {
position: fixed;
top: 0;
left: 200px;
width: 150px;
height: 50px;
background: yellow;
display: flex;
justify-content: center;
align-items: center;
z-index: 8;
cursor: pointer;
}
#sidebar {
display: none;
}
#sidebar.show {
display: block;
}
.overlay {
position: fixed;
width: 100vw;
height: 100vh;
background: red;
z-index: -1;
}
.menuBox {
width: 200px;
height: 100vh;
background: blue;
transition: 0.3s ease-in-out;
transform: translate(-100%);
}
#sidebar.show .menuBox {
transform: translate(0);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="sidebar">
<div class="overlay"></div>
<div class="menuBox"></div>
</div>
<div id="button">CLICK ME</div>
You can't animate display: none; Set opacity to 0 and then 1 on toggle class. Here's the CodePen for you. ;)
I added a button for the toggle event. Let me know if you need any more help!
enter link description here
$(".btn").on("click", toggleSidebar);
function toggleSidebar() {
$("#sidebar").toggleClass("show");
}
body {
margin: 0;
padding: 0;
}
#sidebar {
opacity: 0;
transition: all 300ms ease-in-out;
}
#sidebar.show {
display: block;
opacity: 1;
}
.overlay {
position: fixed;
width: 100vw;
height: 100vh;
background: red;
z-index: -1;
}
.menuBox {
width: 200px;
height: 100vh;
background: blue;
transition: 300ms ease-in-out;
-webkit-transform: translate(-100%);
}
#sidebar.show .menuBox {
-webkit-transform: translate(0);
}
.btn {
position: absolute;
top: 10px;
left: 20px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="sidebar">
<div class="overlay"></div>
<div class="menuBox"></div>
</div>
<button class="btn">Click</button>
You need to consider an animation. The animation will run automatically when the element appear on the screen
function toggleSidebar() {
$("#sidebar").toggleClass("show");
}
$("#button").on("click", function() {
toggleSidebar();
});
body {
margin: 0;
padding: 0;
}
#button {
position: fixed;
top: 0;
left: 200px;
width: 150px;
height: 50px;
background: yellow;
display: flex;
justify-content: center;
align-items: center;
z-index: 8;
cursor: pointer;
}
#sidebar {
display: none;
}
#sidebar.show {
display: block;
}
.overlay {
position: fixed;
width: 100vw;
height: 100vh;
background: red;
z-index: -1;
}
.menuBox {
width: 200px;
height: 100vh;
background: blue;
transform: translate(-100%);
animation: show 0.3s ease-in-out forwards;
}
#keyframes show {
to {
transform: translate(0);
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="sidebar">
<div class="overlay"></div>
<div class="menuBox"></div>
</div>
<div id="button">CLICK ME</div>
updating display to a value other than none will start all animations applied to the element by the animation-name property, as well as all animations applied to descendants with display other than none. ref
I think you should define the action for your function called. When load page or on click like below:
$(document).ready(function () {
$('#sidebar').on('click', function () {
$(this).toggleClass('show');
});
});
When scrolling down the page the sticky menu is enabled and gets little jerky. What's the issue and how to get smooth animation.
var elementPosition = $('.head_section').offset();
$(window).scroll(function() {
if ($(window).scrollTop() > elementPosition.top + 150) {
$('.head_section').fadeOut(100);
$('.sticky-menu').fadeIn(100);
} else {
$('.head_section').fadeIn(100);
$('.sticky-menu').fadeOut(100);
}
});
.home {
height: 2000px;
}
.head_section {
height: 100px;
width: 100%;
background: black;
}
.sticky-menu {
display: none;
position: fixed;
top: 0;
background: red;
height: 100px;
right: 0;
left: 0;
z-index: 9999;
transition: all 0.1s;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="home">
<div class="head_section"></div>
<div class="sticky-menu"></div>
</div>
Is there any solution for this?
In your example, you used jQuery for the animation. So you need to remove the transition from your CSS. You can only use one, jQuery OR CSS, but not both in this case.
var elementPosition = $('.head_section').offset();
$(window).scroll(function() {
if ($(window).scrollTop() > elementPosition.top + 150) {
$('.head_section').fadeOut(1000);
$('.sticky-menu').fadeIn(1000);
} else {
$('.head_section').fadeIn(1000);
$('.sticky-menu').fadeOut(1000);
}
});
.home {
height: 2000px;
}
.head_section {
height: 100px;
width: 100%;
background: black;
}
.sticky-menu {
display: none;
position: fixed;
top: 0;
background: red;
height: 100px;
right: 0;
left: 0;
z-index: 9999;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="home">
<div class="head_section"></div>
<div class="sticky-menu"></div>
</div>
I'm trying to make a simple scroll left and right div on hover. I'm really not sure what I'm doing wrong, I hover, but it only moves the 50 specified in the if statement. Do I need to add some kind of loop while I'm still hovering? Any help would be greatly appreciated.
Basically, I want to be able to hover over the two black boxes right and left and while it's hovered move right or left, when I remove the mouse it should stop.
$("#left").hover(function() {
var leftPos = $('#wrapper').scrollLeft();
$("#wrapper").animate({
scrollLeft: leftPos - 50
}, 1);
});
$("#right").hover(function() {
var leftPos = $('#wrapper').scrollLeft();
$("#wrapper").animate({
scrollLeft: leftPos + 50
}, 1);
});
html,
body {
background-color: #eeeeee;
margin: 0;
overflow-x: scroll;
overflow-y: hidden;
}
#left {
position: absolute;
width: 10vw;
height: 100vh;
top: 0;
left: 0;
z-index: 1;
background-color: black;
}
#right {
position: absolute;
width: 10vw;
height: 100vh;
top: 0;
right: 0;
z-index: 1;
background-color: black;
}
#wrapper {
width: 100%;
height: 100vh;
white-space: nowrap;
overflow-y: hidden;
overflow-x: scroll;
}
#inner_wrap {
width: 4000px;
height: 100vh;
align-items: center;
display: flex;
}
#firstcontent {
align-items: center;
display: flex;
vertical-align: middle;
color: white;
float: left;
margin-left: 20vw;
width: 400px;
height: 250px;
background-color: #2d2d2d;
}
.thumbone {
width: 400px;
height: 250px;
background-color: lightgrey;
display: inline-block;
}
.thumbtwo {
width: 400px;
height: 250px;
background-color: grey;
display: inline-block;
}
<script src="https://corporate3.bdjobs.com/js/jquery.min.js"></script>
<div id="left"></div>
<div id="right"></div>
<div id="wrapper">
<div id="inner_wrap">
<div id="firstcontent">hover or scroll</div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
</div>
</div>
Link to script
jsfiddle
[also a side note, why does this work only on jsfiddle and no where else?]
Your issue is because the mouseenter and mouseleave events (which underpin the hover() logic) only fire once, when the mouse enters/leaves the targeted element. If you want to repeatedly perform an action whilst the element is over those elements you'll need to implement your own logic.
To achieve this you can use an interval within the mouseenter handler of the hover() to repeatedly shift the scroll position of the required element. Then in the mouseleave you can clear that timer.
Also note that you can DRY up your code by using a common class on both elements along with a data attribute to govern the movement increment per tick of the interval. Try this:
var timer;
$('.hover-scroll').hover(function() {
var increment = $(this).data('pos');
timer = setInterval(function() {
var leftPos = $("#wrapper").scrollLeft();
$("#wrapper").animate({
scrollLeft: leftPos + increment
}, 1);
}, 50);
}, function() {
clearInterval(timer);
});
html,
body {
background-color: #eeeeee;
margin: 0;
overflow-x: scroll;
overflow-y: hidden;
}
#left {
position: absolute;
width: 10vw;
height: 100vh;
top: 0;
left: 0;
z-index: 1;
background-color: black;
}
#right {
position: absolute;
width: 10vw;
height: 100vh;
top: 0;
right: 0;
z-index: 1;
background-color: black;
}
#wrapper {
width: 100%;
height: 100vh;
white-space: nowrap;
overflow-y: hidden;
overflow-x: scroll;
}
#inner_wrap {
width: 4000px;
height: 100vh;
align-items: center;
display: flex;
}
#firstcontent {
align-items: center;
display: flex;
vertical-align: middle;
color: white;
float: left;
margin-left: 20vw;
width: 400px;
height: 250px;
background-color: #2d2d2d;
}
.thumbone {
width: 400px;
height: 250px;
background-color: lightgrey;
display: inline-block;
}
.thumbtwo {
width: 400px;
height: 250px;
background-color: grey;
display: inline-block;
}
<script src="https://corporate3.bdjobs.com/js/jquery.min.js"></script>
<div id="left" class="hover-scroll" data-pos="-50"></div>
<div id="right" class="hover-scroll" data-pos="50"></div>
<div id="wrapper">
<div id="inner_wrap">
<div id="firstcontent">hover or scroll</div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
<div class="thumbone"></div>
<div class="thumbtwo"></div>
</div>
</div>
If you want to speed up or slow down the scroll, change the delay on the interval