Preloading Images That Are Used As Background In Css?

May 1, 2010

I have a page where there are 4 images that are loaded as a div background via css file.

When I try to use javascript to preload them it just does not look like its pre loading them.

I tried doing the following but the images don't pre loaded. They appear one after another.

Code:
<SCRIPT language="JavaScript">
<!--
pic1= new Image(100,25);
pic1.src="http://someplace.com/image1.gif";
//-->
</SCRIPT>

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Preloading Images In A Background Table Attribute Tag?

Jun 19, 2009

i know that the background attribut on table is not official but you can still use it and it will load an image as a background but i have an already coded site wich uses this background tag and a preload image js function wont work correctly, is there an solution to this?, right now i only see changing the code of the page(it's a damn nasty table based code)

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Preloading A Background Image

Mar 16, 2005

I issue a css rule for my table that will contain the masthead thus:

table.banner{background-image:url(background.gif);background-repeat:no-repeat;}
Afterwhich i preloaded the background image using javascript thus:

<script>
banner=new Array();
banner[1]=new Image();
banner[1].src="background.gif";
</script>

when i tested this script i didn't notice that the background image got pre loaded pls am i doing anything wrong?

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Preloading Images In IE9?

Apr 14, 2011

I'm finding IE9 handles the preloading of images using the Image object differently to its earlier versions.For example:

This code in the <head>

Code:

<script type="text/javascript">
var picData = ['num1.jpg','num2.jpg','num2.jpg','num2.jpg'];
picO = new Array();

[code]....

Earlier versions of IE seem to work as FF4 does.It appears that the window.onload event in IE9 does not take into account if all the images have completed downloading via the above FOR loop whereas FF4 and the others do.

The workaround I am using is to preload the images in hidden <img>'s at the top of the <body> and then loading them into an Image object to get the jpg's actual width and height. This is working in IE9, FF4 and the other majors.

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Preloading Images - IE 5 Bug

Apr 30, 2001

I'm using ie 5 and I was preloading these images for a rollover and I noticed the preloading wasn't working.

I looked at my code from all angles and couldn't figure it out - checked online examples on how to do it - same way I'm doing it.

Checked a different browser - worked fine.

So is there a security setting in IE that may disable preloading stuff? Or idoes my browser just need to be reinstalled?

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Preloading Images In IE9 ?

Apr 14, 2011

I'm finding IE9 handles the preloading of images differently to IE8 and FF4 and the latest versions of other browsers.

In IE9 the preloading still works ok unless I want to use the width or height properties of the created Image object before the src of the new Image has been assigned to an <img>

For example:

This code in the <head>

Code:

outputs '0 0' in IE9 and '150 250' in FF4 and the latest versions of the major browsers. 150 and 250 are the actual width and height of mypic1.jpg

Earlier versions of IE seem to work as FF4 does.

It appears that the window.onload event in IE9 does not take into account if all the images have completed downloading via the above FOR loop whereas FF4 and the others do.

The workaround I am using is to preload the images in hidden <img>'s at the top of the <body> and then loading them into an Image object to get the jpg's actual width and height. This is working in IE9, FF4 and the other majors.

Have I missed or misunderstood something in the the way IE9 works?

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Preloading The Images One-by-one?

Aug 9, 2011

I am attempting to preload an array of images on my website so that they preload in order and only preload one at a time (the images are large and I want them to load in the order they will be viewed in.)So far I have this:

Code:

var images = new Array();
images[0]="website/users/user1/images/0001_000_808460.jpg"
images[1]="website/users/user1/images/0001_001_800872.jpg"

[code]....

This preloads the images all at once. I have yet to figure out a way so that "images[0]" loads first and completely before "images[1]" (and so on).

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Question About Preloading Images

Jul 23, 2005

Is this the correct way to preload an image...?

Var Image1 = new Image()

....And then when I'm ready to use the image I can do this...?

Button1.src=Image1.src

....Or am I just telling Button1 to use the same source path as Image1?

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Preloading Images Not Working?

Sep 14, 2005

I now have, in the header,

[Code]...

The above is in the first page where only the first image above, the before-and-after.gif image, is displayed. The rest are displayed in the second page linked to the first and are shown by using an array

[Code]...

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Preloading The Dynamic Images?

Aug 31, 2009

I have a function that changes the src of an image:

JavaScript Code:

function ChangeSRC(url_src)
{
document.getElementById("photo").src = url_src;
}

[code]....

Neither of these methods seem to work; especially in IE. Is there a better way to preload dynamic images?

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Preloading Images From Webcam?

May 16, 2009

I'm working on an embedded system that I want to stream images from a webcam and having a world of problems.I originally started out using mime's multipart/x-mixed-replace to send the images to the browser and it worked well but IE has no support for it and it simply didnt work on slow connections.So i've changed to creating an image object and preloading it with JS but I cant get any onload functionality to work :crying: I want the page to preload a picture, display it, repeat with the next picture etc.

This is a rough version of what I have so far and it works while the timer is quite high >1sec, but just below that random images don't get displayed. With small delays, say 0.1sec the images are loaded but never displayed. why can't i get it to SHOW the image, THEN load the next one

PHP Code:

<script>
var image = new Image();
var tmr = -1;

[code]...

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Preloading A Directory Of Images?

May 11, 2009

I'm trying to combine two scripts I found online to make a preloader for all the images in a folder. The javascript part works when you manually enter in a list of images, so I was trying to make a php array to get all the names of the images in one directory, then use that to list them. Here's what I tried:

<?php
function dirList ($directory)
{

[code]...

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Preloading Of Images On Webpage

Jun 13, 2003

I just thought this might be useful - short little pre-loading of images on webpage.
Code:
<body onload="preImages()">
<script>
function preImages(){
if (document.images){
aImgSrc = new Array("image1","image2","image3");
aImgLst = new Array ();
for(counter in aImgSrc){
aImgLst[counter] = new Image();
aImgLst[counter].src = "images/" + aImgSrc[counter] + ".jpg";
}}}
</script>

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Jul 6, 2011

I am developing a website for my budding photographer son, Tom, and I want to provide an gallery where the user clicks on a thumbnail and this displays a larger image. The only way I see that I can do this is to have a link on the thumbnail to load the page again passing the image name or id to the page using a query string and processing this using PHP. If I preload all of the larger images when the site first loads will these images be available in the cache for other pages.Another way is to hover the thumbnails and display the larger image but I need to find a way to keep the image displayed until the user hovers over another thumbnail.

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Feb 16, 2010

I am trying to preload over 300 small images. I am using a local developement server at this point and testing in IE. As the user interacts with the page many different images will be appear and dissapper for them. It needs to be smooth. I was noticing that the status bar at the bottom of IE keeps saying the images are being loaded. So I thought I would try preloading the images. After implementing the following code, the IE status bar seems to still show that the images are loading each time and I havent noticed any improvement in load times. Could it be that the images are not really being preloaded? Here is the code I am using to preload (it is triggered by onload in the body tag:

imageObj = new Image(width, height);
imageObj.src = "images/pp1234.png"

my actual code repeats the second line many times in a loop with different image names, but this is the most basic for of my code and it results in the same problem. Are there known issues with IE and preloading?

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Oct 15, 2005

I've inherited responsibility for our church's website. It has a
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If the right approach is to include it on every page, can I do this with an
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Sep 25, 2006

I currently have a Javascript application that randomizes about 200
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Let me know if anyone knows how to do this or can point me to code that
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Feb 24, 2009

A small problem has come up and I'm and I'm not sure how to resolve it. The problem is I do not want my images to preload in an image gallery on one page. [URL]. The images in the gallery you can see are preloading. How can I stop them from preloading? What would I need to do? I just need them to load whenever the user clicks on one. Preloading just takes up uneccessary time. Here is the Javascript code: [URL]. What should I do? I do not know javascript very well.

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Jul 23, 2005

I want to preload some images for a webpage _and_ determing their width and
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Some non-working sample code included. Notice this only doesn't work well on Firefox. The code runs without errors, but it doesn't get the correct height and width. To see the
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var bgimage=new Array()
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HTML Code:
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[Code]...

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