This is a little hard to explain, So I'll try my best
So while a HTML page loads, I'd like there to be a cool loading screen going on. When it finishes loading, I want the loading screen to clear and the HTML document to be shown.
Basically, I want This:
CSS:
/* Absolute Center CSS Spinner */
.loading {
position: fixed;
z-index: 999;
height: 2em;
width: 2em;
overflow: show;
margin: auto;
top: 0;
left: 0;
bottom: 0;
right: 0;
}
/* Transparent Overlay */
.loading:before {
content: '';
display: block;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(0,0,0,0.3);
}
/* :not(:required) hides these rules from IE9 and below */
.loading:not(:required) {
/* hide "loading..." text */
font: 0/0 a;
color: transparent;
text-shadow: none;
background-color: transparent;
border: 0;
}
.loading:not(:required):after {
content: '';
display: block;
font-size: 10px;
width: 1em;
height: 1em;
margin-top: -0.5em;
-webkit-animation: spinner 1500ms infinite linear;
-moz-animation: spinner 1500ms infinite linear;
-ms-animation: spinner 1500ms infinite linear;
-o-animation: spinner 1500ms infinite linear;
animation: spinner 1500ms infinite linear;
border-radius: 0.5em;
-webkit-box-shadow: rgba(0, 0, 0, 0.75) 1.5em 0 0 0, rgba(0, 0, 0, 0.75) 1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) 0 1.5em 0 0, rgba(0, 0, 0, 0.75) -1.1em 1.1em 0 0, rgba(0, 0, 0, 0.5) -1.5em 0 0 0, rgba(0, 0, 0, 0.5) -1.1em -1.1em 0 0, rgba(0, 0, 0, 0.75) 0 -1.5em 0 0, rgba(0, 0, 0, 0.75) 1.1em -1.1em 0 0;
box-shadow: rgba(0, 0, 0, 0.75) 1.5em 0 0 0, rgba(0, 0, 0, 0.75) 1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) 0 1.5em 0 0, rgba(0, 0, 0, 0.75) -1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) -1.5em 0 0 0, rgba(0, 0, 0, 0.75) -1.1em -1.1em 0 0, rgba(0, 0, 0, 0.75) 0 -1.5em 0 0, rgba(0, 0, 0, 0.75) 1.1em -1.1em 0 0;
}
/* Animation */
@-webkit-keyframes spinner {
0% {
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-ms-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
}
100% {
-webkit-transform: rotate(360deg);
-moz-transform: rotate(360deg);
-ms-transform: rotate(360deg);
-o-transform: rotate(360deg);
transform: rotate(360deg);
}
}
@-moz-keyframes spinner {
0% {
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-ms-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
}
100% {
-webkit-transform: rotate(360deg);
-moz-transform: rotate(360deg);
-ms-transform: rotate(360deg);
-o-transform: rotate(360deg);
transform: rotate(360deg);
}
}
@-o-keyframes spinner {
0% {
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-ms-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
}
100% {
-webkit-transform: rotate(360deg);
-moz-transform: rotate(360deg);
-ms-transform: rotate(360deg);
-o-transform: rotate(360deg);
transform: rotate(360deg);
}
}
@keyframes spinner {
0% {
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-ms-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
}
100% {
-webkit-transform: rotate(360deg);
-moz-transform: rotate(360deg);
-ms-transform: rotate(360deg);
-o-transform: rotate(360deg);
transform: rotate(360deg);
}
}
HTML:
<div class="loading">Loading…</div>
to be happening while the page loads. when the page loads, That is cleared, and the rest of the HTML document is displayed. (I'm making a credits system and while the credits load i just really need it to say it's loading, people complain they can't click anything and i have to tell them all it's just loading)
I'd like to stay away from Ajax as much as possible since I'd like to learn Javascript.
This question is related to
javascript
jquery
html
css
loading
At the beginning of your loading script, just make your
visible through css [display:block;] and make the rest of the page invisible through css[display:none;].
Once the loading is done, just make the loading invisible and the page visible again with the same technique. You can use the document.getElementById() to select the divs you want to change the display.
Edit: Here's what it would sort of look like. When the body finishes loading, it will call the javascript function that will change the display values of the different elements. By default, your style would be to have the page not visible the loading visible.
<head>
<style>
#page{
display: none;
}
#loading{
display: block;
}
</style>
<script>
function myFunction()
{
document.getElementById("page").style.display = "block";
document.getElementById("loading").style.display = "none";
}
</script>
</head>
<body onload="myFunction()">
<div id="page">
</div>
<div id="loading">
</div>
</body>
To build further upon the ajax part which you may or may not use (from the comments)
a simple way to load another page and replace it with your current one is:
<script>
$(document).ready( function() {
$.ajax({
type: 'get',
url: 'http://pageToLoad.from',
success: function(response) {
// response = data which has been received and passed on to the 'success' function.
$('body').html(response);
}
});
});
<script>
This method uses the WindowOrWorkerGlobalScope.setInterval(https://developer.mozilla.org/en-US/doc)
method to track the ready states of the document & see if the <body> element exists.
// Function > Loader Screen Script
(function LoaderScreenScript(window = window, document = window.document, undefined = window.undefined || void 0) {
// Initialization > (Processing Time, Condition, Timeout, Loader (...))
let processingTime = 0,
condition = function() {
// Return
return document.body
},
timeout = function() {
// Return
return (processingTime * 1e3) / 2
},
loaderScreenFontSize = typeof window.loaderScreenFontSize != 'undefined' ? window.loaderScreenFontSize : 14,
loaderScreenMargin = typeof window.loaderScreenMargin != 'undefined' ? window.loaderScreenMargin : 10,
loaderScreenMessage = typeof window.loaderScreenMessage != 'undefined' ? window.loaderScreenMessage : 'Loading, please wait…',
loaderScreenOpacity = typeof window.loaderScreenOpacity != 'undefined' ? window.loaderScreenOpacity : .75,
loaderScreenTransition = typeof window.loaderScreenTransition != 'undefined' ? window.loaderScreenTransition : .675,
loaderScreenWidth = typeof window.loaderScreenWidth != 'undefined' ? window.loaderScreenWidth : 7.5;
// Function > Update
function update() {
// Set Timeout
setTimeout(function() {
// Initialization > (Data, Metadata)
var data = document.createElement('loader-screen-element'),
metadata = setInterval(function() {
/* Logic
[if:else if:else statement]
*/
if (document.readyState == 'complete') {
// Alpha
alpha();
// Test
test()
}
});
// Insertion
document.body.appendChild(data);
// Style > <body> > Overflow
document.body.style = ('overflow: hidden !important; pointer-events: none !important; user-drag: none !important; user-select: none !important;' + (document.body.getAttribute('style') || ' ')).trim();
// Modification > Data
// Inner HTML
data.innerHTML =
'<style media=all type=text/css>' +
'body::selection {' +
'background-color: transparent !important;' +
'text-shadow: none !important' +
'} ' +
'@keyframes rotate {' +
'0% { transform: rotate(0) }' +
'to { transform: rotate(360deg) }' +
'}' +
'</style>' +
"<div style='animation: rotate 1s ease-in-out 0s infinite backwards; border: " + loaderScreenWidth + "px solid rgba(0, 0, 0, " + loaderScreenOpacity + "); border-top-color: rgba(0, 51, 255, " + loaderScreenOpacity + "); border-radius: 50%; height: 75px; margin: 0 auto; margin-bottom: " + loaderScreenMargin + "px; width: 75px'> </div>" +
"<small style='color: rgba(127, 127, 127, .675); font-family: \"Open Sans\", \"Calibri Light\", Calibri, sans-serif; font-size: " + loaderScreenFontSize + "px !important; margin: 0 auto; margin-top: " + loaderScreenMargin + "px; text-align: center'> " + loaderScreenMessage + " </small>";
// Style
data.style = 'align-items: center; background-color: rgba(255, 255, 255, .98); display: flex; flex-direction: column; height: ' + innerHeight + 'px; justify-content: center; left: 0; margin: auto; max-height: 100% !important; max-width: 100% !important; min-height: 100vh; min-width: 100vh; position: fixed; top: 0; transition: ' + loaderScreenTransition + 's ease-in-out; width: ' + innerWidth + 'px; z-index: 2147483647';
// Function
// Alpha
function alpha() {
// Clear Interval
clearInterval(metadata)
};
// Test
function test() {
// Style > Data
// Background Color
data.style.backgroundColor = 'transparent';
// Opacity
data.style.opacity = 0;
// Set Timeout
setTimeout(function() {
// Deletion
data.remove();
// Modification > <body> > Style
document.body.style = document.body.getAttribute('style').replace('overflow: hidden !important;', '').replace('pointer-events: none !important;', '').replace('user-drag: none !important;', '').replace('user-select: none !important;', '');
(document.body.getAttribute('style') || '').trim() || document.body.removeAttribute('style')
}, ((+getComputedStyle(data).getPropertyValue('animation-delay').replace(/[a-zA-Z]/g, '').trim() + +getComputedStyle(data).getPropertyValue('animation-duration').replace(/[a-zA-Z]/g, '').trim() + +getComputedStyle(data).getPropertyValue('transition-delay').replace(/[a-zA-Z]/g, '').trim() + +getComputedStyle(data).getPropertyValue('transition-duration').replace(/[a-zA-Z]/g, '').trim()) * 1e3) + 100);
}
}, timeout())
};
/* Logic
[if:else if:else statement]
*/
if (condition())
// Update
update();
else {
// Initialization > Data
var data = setInterval(function() {
/* Logic
[if:else if:else statement]
*/
if (condition()) {
// Update > Processing Time
processingTime += 1;
// Update
update();
// Metadata
metadata()
}
});
// Function > Metadata
function metadata() {
// Clear Interval
clearInterval(data);
/* Logic
[if:else if:else statement]
> Deletion
*/
if ('data' in window && typeof data == 'undefined')
delete window.data
}
}
})(window, window.document, window.undefined || void 0)
This pre-loading screen was made by Lapys @ https://github.com/LapysDev
If in your site you have ajax calls loading some data, and this is the reason the page is loading slow, the best solution I found is with
$(document).ajaxStop(function(){
alert("All AJAX requests completed");
});
https://jsfiddle.net/44t5a8zm/ - here you can add some ajax calls and test it.
I would suggest adding class no-js to your html to nest your CSS selectors under it like:
.loading {
display: none;
}
.no-js .loading {
display: block;
//....
}
and when you finish loading your credit code remove it:
$('html').removeClass('no-js');
This will hide your loading spinner as there's no no-js class in html it means you already loaded your credit code
Source: Stackoverflow.com