For some time, I have been utilizing jQuery AJAX to preload GIF images with the following code:
$("#images").html("<img id='loader' src='../img/ajax-loader.gif' />");
Now, I am attempting to achieve a similar effect (such as a spinning wheel) to preload CSS background images instead of just img tags.
Is this feasible?
After the browser has cached an image, it can quickly retrieve it for both img tags and CSS backgrounds. This means that by continuing to preload images as you are currently doing, you may also be able to preload background images. For example, if you have the following CSS:
#SomeElement { background: url('../img/whatever.gif'); }
You can preload it like this:
$("#images").html("<img id='loader' src='../img/whatever.gif' />");
I don't know all the details of your preloading technique, so my suggestion might not be entirely accurate...
When using an img tag, it's clear that you can capture the onload event. However, when working with CSS background images, I have never come across a method to capture the onload event for those.
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