A jQuery plugin to create a circular progress bar.

rotateBy - default: 1

The amount that the progress animation should move per frame. Leave at default for a smooth animation, increase and increase the speed for a 'stepped' animation.

initialPos - default: 0

The initial position for this instance of the plugin on page load.

targetPos - default: 0

The target position to animate to from initialPos on page load. If both options are set to the same number, the plugin will not animate on load.

scale - default: 360

Number of increments round the plugin. Default uses degrees. Other likely choices would be 100 (for a percentage) or a small number of steps e.g. 5. See 'progPreText' and 'progPostText' options for how to enhance this.

speed - default: 5

Speed of the animation in milliseconds.

includeInner - default: 0

If true, make the plugin instance a 'ring' instead of a solid circle.

innerHTML - default: ''

Any markup or text to put inside the circle. Note that if this option is set there is no need to also explicitly set the includeInner option as well.

showProgress - default: 0

Include inside the circle a changing readout showing the current position of the progress. Uses whatever scale has been set.

progPreText - default: ''

Text to put before the progress output.

progPostText - default: ''

Text to put after the progress output. For example, '%'. Or you could set the pretext to 'Step ' and the posttext to ' of 5', with a scale of 5.

delayAnimation - default: 0

Milliseconds before the animation should start on plugin load.

onFinishMoving - called when the progress has finished moving in its current animation. Returns a value of pos, the position where it has stopped.

moveProgress - pass a value to animate the current position to a new position.

Make a progress meter of 5 steps, loading at step 1 and animating round to step 3, with a callback when it has finished animating.

<div class="progress example1"></div>

<script>
    $('.example1').circles({
        showProgress: 1,
        initialPos:1,
        targetPos:3,
        scale: 5,
        progPreText: 'Step ',
        progPostText: ' of 5',
        delayAnimation: 1000,
        onFinishMoving:function(pos){
            console.log('stopped moving at step ',pos);
        }
    });
</script>

See http://www.custarddoughnuts.co.uk/article/2015/8/17/jquery-circular-progress-plugin-improved for examples and code snippets.