virt2/assets/vendor_components/easypiechart/demo/index.html

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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<title>vanilla</title>
<meta name="viewport" content="width=device-width"/>
<link rel="stylesheet" href="style.css"/>
</head>
<body>
<ul>
<li><a href="index.html" class="active">Vanilla JS</a></li>
<li><a href="jquery.html">jQuery plugin</a></li>
<li><a href="angular.html">Angular module</a></li>
<li><a href="requirejs.html">RequireJS module</a></li>
</ul>
<span class="chart" data-percent="86">
<span class="percent"></span>
</span>
<span class="btn js_update">Update chart</span>
<script src="../dist/easypiechart.js"></script>
<script>
document.addEventListener('DOMContentLoaded', function() {
var chart = window.chart = new EasyPieChart(document.querySelector('span'), {
easing: 'easeOutElastic',
delay: 3000,
barColor: '#69c',
trackColor: '#ace',
scaleColor: false,
lineWidth: 20,
trackWidth: 16,
lineCap: 'butt',
onStep: function(from, to, percent) {
this.el.children[0].innerHTML = Math.round(percent);
}
});
document.querySelector('.js_update').addEventListener('click', function(e) {
chart.update(Math.random()*200-100);
});
});
</script>
</body>
</html>