Onload Clash? Better Image Preload?
Jan 22, 2006
I've got 2 questions if that's OK. I have a number of scripts running on a site i'm working on and I think I may be getting a clash with the image preload and another font resizing script. As I am new to javascript I have picked up the code from elsewehere. I am trying to get my head around it reading tutorials etc but am getting stuck when it comes to multiple scripts on the page
There are a number of scripts running: browser detect, png opacity, image preload, layer show/hide and a font resize.
here is the site
Q1 In IE5.5+ on the PC neither the font sizer nor the image preload is working - i think it is a clash of onload events. Can anyone suggest a fix?
Q2 I think there must be a better way to have my images preload. The current code is the dreamweaver version. Is there a better way?
function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
onload = function()
{
MM_preloadImages(
'../images/icons/iconO_01.gif',
'../images/icons/iconO_02.gif',
'../images/icons/iconO_03.gif',
'../images/icons/iconO_04.gif',
'../images/menu/menuDown_01.gif',
'../images/menu/menuDown_02.gif',
'../images/menu/menuDown_03.gif',
'../images/menu/menuDown_04.gif',
'../images/menu/menuDown_05.gif',
'../images/menu/menuDown_06.gif',
'../images/menudrop/coD_01.gif',
'../images/menudrop/coD_02.gif',
'../images/menudrop/coD_03.gif',
'../images/menudrop/coD_04.gif',
'../images/menudrop/coD_05.gif',
'../images/menudrop/prD_01.gif',
'../images/menudrop/prD_02.gif',
'../images/menudrop/prD_03.gif',
'../images/menudrop/seD_01.gif',
'../images/menudrop/seD_02.gif',
'../images/menudrop/seD_03.gif',
'../images/menudrop/seD_04.gif',
'../images/menudrop/seD_05.gif',
'../images/menudrop/seD_06.gif',
'../images/menudrop/soD_01.gif',
'../images/menudrop/soD_02.gif',
'../images/menudrop/soD_03.gif',
'../images/menudrop/soD_04.gif',
'../images/menudrop/paD_01.gif',
'../images/menudrop/paD_02.gif',
'../images/menudrop/paD_03.gif',
'../images/menudrop/neD_01.gif',
'../images/menudrop/neD_02.gif',
'../images/menudrop/neD_03.gif',
'../images/disc/discCD_01.gif',
'../images/disc/discCD_02.gif',
'../images/disc/discCD_03.gif'
);
}
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Aug 28, 2009
I have this working fine, and I can append the preloaded image to a hidden div then fade the div in for a smooth effect.
Problem is I want to set this preloaded image as a css background image, not as a <img /> in a container. But if when the image is loaded, instead of .prepend() I do .css() and set the css property of a background-image to be the preloaded images URL, then when it carries on with displaying it the browser loads the image again. Rather than using the preloaded one.
I want the image to be a background image as I want it centered in the page background, even if it is too large for the viewport.
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Jan 8, 2005
I got a script that rotates my images, but I have almost 300 in stock and it is preloading all 300 once the script is started. How do I get it to preload one at a time, or nothing at all? Code:
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Aug 23, 2005
My question is can I use home page preload some images which will not be used for this page, but will be (potentially) used for later pages?
My problem is the home page does not have any images at all, I use following code in head section:
<script language="javascript>
img0 = new Image();
img1 = new Image();
img2 = new Image();
img3 = new Image();
img4 = new Image();
img5 = new Image();
img0.src = "./images/arrowUp.gif";
img1.src = "./images/arrowUp.gif";
img2.src = "./images/track.gif";
img3.src = "./images/drag.gif";
img4.src = "./images/arrowDown.gif";
img5.src = "./images/bottom.gif";
</script>
This cause the home page display nothing.
Any ideas or thought?
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Dec 8, 2005
This isn't working and I can't figure out what I'm doing wrong:
var c_imgs = new Array(
'images/champascari.jpg',
'images/champfangio.jpg',
'images/champhawthorn.jpg',
'images/champhill.jpg',
'images/champsurtees.jpg',
'images/champlauda.jpg',
'images/champschumacher.jpg');
var pre_img;
for (var i = 0; i < c_imgs.length; i++)
{
pre_img[i] = new Image();
pre_img[i].src = c_imgs[i];
}
If this code is correct, should I put it in a function and then call for
it ?
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Jul 8, 2009
I trying to:
- preload an image
- then call it as a a background image.
But cant get it to work- here is my code...
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Aug 10, 2011
I want to use an image as a CSS background-image so I used the Image constructor to load the image: [URL] but I noticed that the browser (Firefox) load the image from the URL and not from the memory when changing the background-image property (it takes about 1.5 seconds before showing the image, and every time I reload the page!)
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Aug 2, 2005
Will this code suffise to preload two given images into the browsers' cache, before the page has loaded?
// preload images
tipTransparentImage = new Image();
tipTransparentImage.src = 'images/bg.png'
tipTransparentBgImage = new Image();
tipTransparentBgImage.src = 'images/bgs.png'
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Jul 30, 2010
I recently switched my image pre-loading to more "efficient" code I came across.
However, it doesn't seem to be working as the images only load on mouse over.code...
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Jun 11, 2003
Any way to have a "status bar" popup while images are loading???
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Feb 7, 2011
Basically what I'm trying to achieve is when a new image is selected(clicked), the 'click' passes the new image name (and width, height) to the 'changeimg' function, I want this function to fade the current img so we can see the back ground wait img. then when the new image has preloaded successully, replace the current image and fade it back to full. It appears to do this mostly, but its not preloading the image, sometimes the contain will exapand to the new size and I'll see the image loading into it.
I'm wondering if I'm using the preload (new Image()) correctly, I cant locate any examples similar to what I'm doing. Most exapmles I see all appear to be to do with image rollovers. Which isn't what I need, I also do not want to pre load any images until they have been requested.
[Code]...
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Oct 3, 2009
I'm trying to preload an image before it fades in and I'm using the following code to do so. Could someone please tell why it doesn't work? The layer fades in and then the image suddenly shows up.
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Feb 20, 2011
I have a large image that I change by clicking on some small images to change it.
I use this code to preload images and then fade in, but it doesn't look nice. Once the images are cached into the computer the fading is perfect, but the first time it seems like it fades at the same time as it loads. I wonder if it could be done in some other way? Perhaps use a callback or preload all images into an array, but I'm new and don't really knows how to put i together yet?
$("#bild1").click(function(){
$("#main_image").attr("src","bild1.jpg").hide().fadeIn(1000); });
I use the code above for each thumnail images.
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Aug 4, 2003
This code seems so simple but I can not get it to work. I am trying to preload images for use in an image swap. This is the code I am using:
<body onLoad="preloadimages('ro_bui.jpg', 'ro_mar.jpg', 'ro_sto.jpg', 'ro_mec.jpg', 'ro_pai.jpg', 'ro_fib.jpg')">
<script language="JavaScript" type="text/javascript">
<!--
function preloadimages() {
var roimages=new Array();
var arguments=preloadimages.arguments;
for (i=0;i<arguments.length;i++){
roimages[i]=new Image();
roimages[i].src=preloadimages.arguments[i];
}
}
-->
</script>
In the mouseover event I have
<a href="marina.htm" onmouseover="document.images['ro'].src=roimage[0].src" onmouseout="document.images['ro'].src='ro_base.jpg'">
for each rollover....
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Nov 24, 2006
Does anyone have a code snippet that would preload and entire directory (and sub-directories)?
I'm using a basic JS array to load individual images but was hoping I could find a more scaleable/efficient way of doing it?
var yourImages = new Array("images/1.jpg", "images/2.jpg")
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Sep 23, 2010
I'm trying to find a JQuery plugin that will:
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c) fade out showing each image once it's downloaded
d) as a consequence of (a) allow the page to render (show) quicker even if (depending on server speed, connection speed and user computer speed) the remaining images are still in a 'load state'.
e) is based on JQuery so not to increase page's footprint via adding Mootools, Prototype, YUI or the like (unless the additional 100KB or so is so worth it).
I've scouted Google and there a few out there but amazingly none seem to focus on doing this for a web page's image's but rather seem to focus on galleries/lightbox windows and so forth.
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Of course the simple solution is not to add the Twitter feed, but since this is exactly one of the uses I was planning for this sliding panel, that's a fat 'non' option. All the JQuery code I have used for the theme has 'no conflict' calls and I have even added specific calls for specific code - so stuff like:
[Code]...
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I find that either of these plugins work in isolation but together they are clashing. The first to be specified in my initialisation code works, the following doesn't. Initialisation code looks like this:
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(function($){
// Infinite Carousel
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'transitionSpeed' : 2000,
'displayTime' : 10000,
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'speedIn' : 600,
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Web pages:
Carousel working: [URL]
Fancybox not working: [URL]
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May 18, 2011
When I write this 2 scripts togeder only one of them works. What do I need to do to make them both work togeder?
[Code]...
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Jul 23, 2005
With image elements I can do <IMG src="..." onLoad="..."> where
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I plan to render a series of maps which sometimes take a while to
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Jul 23, 2005
I can't get Opera to fire an event when an image object's src has
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---------------------------------
window.onload=go
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Code is in a file on it's own referenced from the xhtml. Using either
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Code works as expected in Firefox, Mozilla, Konqueror, IE. If I
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Apr 26, 2006
If I create an image element using the DOM methods and assign it an onload event handler, at what point is the image actually loaded and the event handler run?
So, given the following and assuming that "parent" references a node already in the document:
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Mar 4, 2010
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<html>
<head>
<noscript></noscript><!-- --><script type="text/javascript" src="[URL]"></script><script type="text/javascript">
//DATE CONVERSION BEGINS:
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Jun 4, 2009
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Aug 18, 2009
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[code]....
The problem is with IE6, it randomly decides not to work without any sign from the debugger that anything is wrong. This is my first time using onLoad with an image, is there any quirks with it such as page load order (e.g. if the image finishes loading before the text loads this wouldn't appear to run?).
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