I have some JS that displays and plays audio.
However the load time is very long, I following this tutorial (http://www.dzyngiri.com/show-loading-image-while-the-website-loads/) to install a preloader.
I'm seeing the preloaded image appearing, however it goes away well before the entire page is loaded.
I've tried variation between $(window).load & $(document).ready neither shows the image until the JS and audio plays.
Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>cal christmas tree canvas 005</title>
<style type="text/css">
#spinner {
position: fixed;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
z-index: 9999;
background: url(images/Bitmap12.jpg) 50% 50% no-repeat #ede9df;
}
</style>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script src="cal christmas tree canvas 005.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js"></script>
<script type="text/javascript">// <![CDATA[
$(window).load(function() { $("#spinner").fadeOut("slow"); })
// ]]></script>
<script>
var canvas, stage, exportRoot;
function init() {
canvas = document.getElementById("canvas");
images = images||{};
var loader = new createjs.LoadQueue(false);
loader.installPlugin(createjs.Sound);
loader.addEventListener("fileload", handleFileLoad);
loader.addEventListener("complete", handleComplete);
loader.loadManifest(lib.properties.manifest);
}
function handleFileLoad(evt) {
if (evt.item.type == "image") { images[evt.item.id] = evt.result; }
}
function handleComplete() {
exportRoot = new lib.calchristmastreecanvas005();
stage = new createjs.Stage(canvas);
stage.addChild(exportRoot);
stage.update();
stage.enableMouseOver();
createjs.Ticker.setFPS(lib.properties.fps);
createjs.Ticker.addEventListener("tick", stage);
}
function playSound(id, loop) {
createjs.Sound.play(id, createjs.Sound.INTERRUPT_EARLY, 0, 0, loop);
}
</script>
</head>
<body onload="init();" style="background-color:#D4D4D4">
<div id="spinner"></div>
<canvas id="canvas" width="960" height="640" style="background-color:#FFFFFF"></canvas>
</body>
</html>
You call your init() function at the exact same time as you call your loader disappering function
<body onload="init();"
and
$(window).load(function() {} / or window.onload = function() {}
are the same thing with a different name.
You should take init() out of the onload tag and place it anywhere in your script, out of any onload events.
Related
I was trying to implement like similar website.
http://printio.ru/full_print_tees/new
Even i tried answer of following post but it is not working.Does any one have the solution or fiddle.
Fabric.js Clip Canvas (or object group) To Polygon
I have create following example but it is not working similar. Please let me know what is problem
<html>
<head>
<link rel="stylesheet" type="text/css" media="all" href="css/reset.css" /> <!-- reset css -->
<script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
<script type="text/javascript" src="fabric.min.js"></script>
<style>
body{ background-color: ivory; }
canvas{border: 1px solid red; }
</style>
<script>
$(function(){
var canvas = new fabric.Canvas('canvas');
var group = [];
fabric.loadSVGFromURL("http://fabricjs.com/assets/2.svg",function(objects,options) {
var loadedObjects = new fabric.Group(group);
loadedObjects.set({
left: 100,
top: 100
});
canvas.add(loadedObjects);
shape = canvas.item(0);
canvas.remove(shape);
canvas.clipTo = function(ctx) {
shape.render(ctx);
};
canvas.renderAll();
},function(item, object) {
object.set('id',item.getAttribute('id'));
group.push(object);
});
}); // end $(function(){});
</script>
</head>
<body>
<canvas id="canvas" width="300" height="300"></canvas>
</body>
</html>
Hello are you looking something like this on my example?
load one image (t-shirt)
add i-text object
manipulate text object (edit,move up/down/left/right) on the t-shirt
small snippet:
fabric.Image.fromURL(myImg, function(myImg) {
var img1 = myImg.scale(scaleFactor).set({ left: 0, top: 0 });
var text = new fabric.Text('the_text_sample\nand more', {
fontFamily: 'Arial',
fontSize:20,
});
text.set("top",myImg.height*scaleFactor-myImg.height*scaleFactor+150);
text.set("left",myImg.width*scaleFactor/2-text.width/2);
var group = new fabric.Group([ img1,text ], { left: 10, top: 10 });
canvas.add(group);
console.log(canvas._objects[0]._objects[1].text);
});
live example : https://jsfiddle.net/tornado1979/zrazuhcq/
Hope helps,good luck.
i am making a basic game loop so i started with the basic cube exercise and i wrote the exemple below but it isn't working. i tried to see if there is something misspell but i could find nothing aparently.
<!DOCTYPE HTML>
<html>
<head>
<title>Game</title>
<style type="text/css">
#GameCanvas {
background-color: #FF0000;
}
</style>
</head>
<body>
<canvas id="GameCanvas" width="1000" height="600"></canvas>
<script type="text/javascript">
var canvas = document.findElementById("GameCanvas");
var graphics = canvas.getContext("2d");
function Update() {}
function Draw() {
graphics.beginPath();
graphics.fillRect(20, 20, 50, 50);
graphics.fillStyle = "#FFFFFF";
graphics.fill();
graphics.closePath();
}
function GameLoop() {
Update();
Draw();
requestAnimFrame(GameLoop);
}
requestAnimFrame(GameLoop);
</script>
</body>
</html>
You have a couple bugs here, document.findElementById does not exist, change it to document.getElementById.
requestAnimFrame should be changed to requestAnimationFrame in both instances.
With these changes your loop runs and draws a square to the screen.
<!DOCTYPE HTML>
<html>
<head>
<title>Game</title>
<style type="text/css">
#GameCanvas {
background-color: #FF0000;
}
</style>
</head>
<body>
<canvas id="GameCanvas" width="1000" height="600"></canvas>
<script type="text/javascript">
var canvas = document.getElementById("GameCanvas");
var graphics = canvas.getContext("2d");
function Update() {}
function Draw() {
graphics.beginPath();
graphics.fillRect(20, 20, 50, 50);
graphics.fillStyle = "#FFFFFF";
graphics.fill();
graphics.closePath();
}
function GameLoop() {
Update();
Draw();
requestAnimationFrame(GameLoop);
}
requestAnimationFrame(GameLoop);
</script>
</body>
</html>
On a page with the following code, the textarea doesn't update with text that I type, until I click off of it. Why?
<html>
<head>
<style>
#canvas {
float: left;
}
</style>
<script>
window.onload = function() {
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
ctx.translate(0, 0);
}
</script>
</head>
<body>
<canvas id="canvas" width=439></canvas>
<textarea></textarea>
</body>
</html>
I've discovered that the textarea will update properly if I do any one of the following:
Change the width of the canvas to 438 or less
Remove ctx.translate(0,0);
Remove float: left;
This only happens in Chrome, I can't reproduce in Firefox.
I'm running Chrome 39.0.2171.95 and Firefox 34.0.5
That is really odd behavior. You can fix it by adding relative positioning to the textarea:
<html>
<head>
<style>
#canvas {
float: left;
}
textarea {
position: relative;
}
</style>
<script>
window.onload = function() {
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
ctx.translate(0, 0);
}
</script>
</head>
<body>
<canvas id="canvas" width=439></canvas>
<textarea></textarea>
</body>
</html>
I want to block html page until it loads completely with wait image by javascript or CSS but WITHOUT JQUERY
I want to achieve like these demos http://malsup.com/jquery/block/#demos
Please don't suggest with jquery solutions.
HTML code:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script>
var ld = (document.all);
var ns4 = document.layers;
var ns6 = document.getElementById && !document.all;
var ie4 = document.all;
if (ns4)
ld = document.loading;
else if (ns6)
ld = document.getElementById("loading").style;
else if (ie4)
ld = document.all.loading.style;
function init() {
if (ns4) { ld.visibility = "hidden"; }
else if (ns6 || ie4) ld.display = "none";
}
</script>
</head>
<body onload="init()">
//image which has size of 40 mb.
<img src="show.jpg" />
<div id="loading" style="position:absolute; width:100%; text-align:center; top:300px;">
//loading image to see while loading background image
<img src="loading.gif" />
</div>
</body>
</html>
Here a solution that will show the wait image when js is active, and keep the wait image hidden if js is not active:
Create a default rule that hides the #loading and a .is-loading #loading that shows the wait image
Use JS to add the class wait image to the html element
When the content (or image) is loaded remove the is-loading class.
<!DOCTYPE html>
<html>
<head>
<title></title>
<script type="text/javascript">
(function() {
var html = document.getElementsByTagName('html')[0];
html.className += ' is-loading';
window.onload = function() {
html.className = String(html.className).replace('is-loading','');
}
}());
</script>
<style>
#loading {
display : none;
position : absolute;
width : 100%;
text-align : center;
top : 300px;
}
.is-loading #loading {
display: block;
}
</style>
</head>
<body>
<!--image which has size of 40 mb. -->
<img src="show.jpg" >
<div id="loading">
<!-- loading image to see while loading background image -->
<img src="loading.gif" >
</div>
</body>
</html>
I have anchors on a page that displays a different background image on mouse hover and mouse out. I have preloaded the images to avoid flickering and re-requesting the images from the server on mouse hover/out. The scripts works fine on IE8/FF but Chrome behaves differently. In the latest version of Chrome, the first time I hover on the anchor, the image is re-requested from the server causing a flicker, why is this? Succeeding mouse hover/out works fine and there is no flicker.
Code below:
<html>
<head>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<style type="text/css">
body:after
{
content: url('/images/1.png') url('/images/1a.png')
position: absolute;
top: -9999px;
left: -9999px;
}
.imageHover
{
display:inherit;
width:25px;
height:50px;
background:url('/images/1.png') no-repeat;
}
.imageOut
{
display:inherit;
width:25px;
height:50px;
background:url('/images/1a.png') no-repeat;
}
</style>
<script language="javascript" type="text/javascript">
var oneSelected = new Image();
var oneUnselected = new Image();
oneSelected.src="/images/1.png";
oneUnselected.src="/images/1a.png";
function OnImageMouseOver(target) {
$(target).toggleClass('imageHover', true);
$(target).toggleClass('imageOut', false);
}
function OnImageMouseOut(target) {
$(target).toggleClass('imageHover', false);
$(target).toggleClass('imageOut', true);
}
</script>
</head>
<body>
</body>
</html>
Converted anchor to image, but it still won't work in Chrome:
<html>
<head>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<script language="javascript" type="text/javascript">
if (document.images) {
var oneSelected = new Image();
var oneUnselected = new Image();
oneUnselected.src = '/images/1a.png';
oneSelected.src = '/images/1.png';
}
function OnRatingMouseOver(target, newSrc) {
$(target).attr('src', newSrc);
}
function OnRatingMouseOut(target, newSrc) {
$(target).attr('src', newSrc);
}
</script>
</head>
<body>
<div id="mainDiv" style="width:400px;">
<div id="inputDiv">
<table id="inputTable">
<tr>
<td>Rating</td>
<td>
<img id='rating1Anchor'
src='/images/1a.png'
onmouseover="OnRatingMouseOver(this, '/images/1.png');"
onmouseout="OnRatingMouseOut(this, '/images/1a.png');"
onclick="OnRatingClick(this, '/images/1.png', 1);">
</td>
</tr>
</table>
</div>
</div>
</body>
<html>
It may not be preloading them at all, as it's not displaying them it's just adding to the DOM? Try the following code to preload your images.
var preload = new Array();
function preload_image(){
for (var x = 0; x < preload_image.arguments.length; x++)
{
preload[x] = new Image();
preload[x].src = preload_image.arguments[x];
}
}
I have to say I very much doubt that the pngs are actually being rerequested from the server in Chrome. Can you post a screenshot of the Timeline in dev Tools showing the request going off twice? :) I think it's far more likely that you're just experiencing a slight hesitation during the repaint.
Is there a reason you aren't using image sprites? They are the canonical solution to this problem. The idea is simply that a single image is loaded that contains both the normal and "hover" or "active" states. The portion of the graphic shown gets swapped out using css "background-position". Here's a tutorial, and here's a table of support for "background-position" which goes all the way back to IE4.
Code should look something like this:
<html>
<head>
<style>
#myCoolLink {
background-image:url('img/image.gif');
background-position:0px 0px;
}
#myCoolLink:hover,
#myCoolLink.active {
background-position:0px -72px; //depending of course on the image
}
</style>
</head>
<body>
</body>
</html>
No script required, and it's much terser. The other great advantage of this is that you can still programmatically change the image over to the "hover" anytime you want by toggling the "active" class on the link, if you ever need to.