Animated Transitions

Demo uploads land in a temporary store and are swept after 60 minutes. To keep files, handle FileUploaded — see Single File for the complete save pattern.

Animated Transitions on Upload States

CSS transitions animate the uploader between idle, uploading, success, and error states. Visual feedback makes the upload experience feel polished and responsive.

What you should see: files slide into the queue and the bar animates smoothly rather than jumping. Purely presentational - drop several files at once to see the staggered entrance.

.animated-uploader {
 transition: border-color 0.4s, box-shadow 0.4s, background-color 0.4s;
}
.animated-uploader.cu-uploading {
 border-color: #8b5cf6;
 box-shadow: 0 0 0 4px rgba(139,92,246,0.15);
}
.animated-uploader.cu-success {
 border-color: #10b981;
 background-color: #ecfdf5;
}

AjaxUploader.create(el, {
 uploadUrl: '/ajaxupload.axd/upload',
 onTaskStart: function() { container.classList.add('cu-uploading'); },
 onTaskComplete: function() { container.classList.add('cu-success'); }
});