preload

I want to fade-in images on my page when they load, but if this image is not already in cache - just show it normally. I've tried inline html <img onload="$(this).show(500)" /> and css img{display:none}, but it fires even if this image is already in cache. How do I fade-in only images, which are not in cache? This should work in all relevant browsers. On domready, the cached image will be complete already, thus the onload handler is not set. $('img.fadeuncached').each(function() { if(!this.complete) { var $el = $(this); $el.load(function() { $el.fadeIn(500); }); } }); 来源： https://stackoverflow

The first opening of a new JInternalFrame in my Swing interface takes some time. According to the profiler, most of this time is spent in the Classloader.loadClass() method. I understand that it loads classes dynamically when needed and indeed the next time I open the same frame, it is much faster. This application has a login screen, and then a time with an empty desktoppane before the user opens one of those internal frames. I figure that since I have some "down time", I could use it to preload some common classes in background, so that when the user actually opens an internal frame, it goes

There are several questions about this in the forum, but I couldn't get a good answer for what I need. I am getting into Canvas and Javascript, and I want to preload some images as soon as the game opens. I made an example of the method I wanted to build (and didn't work) I have 3 files: "main.html" where the canvas (there is only one in this example) is declared and I try to load an image, "ImagePreloader.js" where I preload all the images and "Variables.js" where I have my variables. Could anyone please help me with this image preloading metod, or suggest me a viable one? I think the image

I have several iframes to load with a huge 3D model behind. When i display my iframe on my website, my browser block while this iframe is loading (maybe 20seconds..) I'm looking for a way to preload these iframe without blocking the browser. I tried something with display none, ajax or by create iframe dynamically but no effect. Do you have any ideas ? Thanks ! AFAIK, there is no clean supported/standard way of pre-loading iFrame without blocking the browser. There are however ways you can minimize this "block". To give you some perspective, here's where the browser blocks: loading scripts