HTML5 & jQuery Progress bar plugin : Percentage Loader

A jQuery plugin that utilises HTML canvas to show an animated percentage loader widget suitable for loading screens or displaying feedback during long-running tasks.

Introduction

Html5 & jQuery PercentageLoader is a jQuery plugin for displaying a progress widget in more visually striking way than the ubiquitous horizontal progress bar / textual counter. The plugin takes miniminal installation and is simple and flexibile to use. It makes use of HTML 5 canvas for a rich graphical appearance with only a 10kb (minified) javascript file necessary (suggested web font optional). It uses vectors rather than images so can be easily deployed at various sizes by simply adjusting the initial parameters.

Requirements

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1. jQuery 1.4+
2. Firefox 3.0+, Safari 4.0+, Chrome 7+, IE9+, Opera 9+

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(i.e any browser with reasonable canvas support)

Installation

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1. Include the javascript file (a minified version is also provided)
2. You can also include the (optional but recommended web font) – Bebas Neue + fontkit CSS. This can found downloaded at http://www.fontsquirrel.com/fonts/bebas-neue
3. Run $.percentageLoader on any block element where you want the widget to appear

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Options include:

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1. progress (initial starting position of loader, range 0 – 1.0)
2. value (initial label for the value)
3. width (default 256)
4. height (default 256)
5. controllable (true/false, defaults to false) allows the user to set the value by clicking
6. onProgressUpdate(value) – provide a callback function for controllable loaders with the updated value

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