Spin.js - The ultimate animated loading indicator
INTRODUCTION
Felix Gnass has set up a great project called spin.js, allowing developers to create CSS-powered spinners where keyframes are available, and uses VML as a fallback for Internet Explorer. spin.js is very customizable and is built with pure JavaScript so that no toolkit is required (though you can get a jQuery plugin if you want)
FEATURES
- No images, no external CSS
- No dependencies (jQuery is supported, but not required)
- Highly configurable
- Resolution independent
- Uses VML as fallback in old IEs
- Uses @keyframe animations, falling back to setTimeout()
- Works in all major browsers, including IE6
- MIT License
Spin.js dynamically creates spinning activity indicators that can be used as resolution-independent replacement for AJAX loading GIFs.
USAGE
1. Include JS
<script src='http://fgnass.github.io/spin.js/spin.min.js'></script>2. Create element to hold the spin.
<div id="loading"></div>3. Init spin options
var opts = {
lines: 13, // The number of lines to draw
length: 20, // The length of each line
width: 10, // The line thickness
radius: 30, // The radius of the inner circle
corners: 1, // Corner roundness (0..1)
rotate: 0, // The rotation offset
direction: 1, // 1: clockwise, -1: counterclockwise
color: '#000', // #rgb or #rrggbb or array of colors
speed: 1, // Rounds per second
trail: 60, // Afterglow percentage
shadow: false, // Whether to render a shadow
hwaccel: false, // Whether to use hardware acceleration
className: 'spinner', // The CSS class to assign to the spinner
zIndex: 2e9, // The z-index (defaults to 2000000000)
top: '50%', // Top position relative to parent
left: '50%' // Left position relative to parent
};3. Create the spin
var target = document.getElementById('loading');
var spinner = new Spinner(opts).spin(target);DEMO