Implement concentric doughnut charts using Chart.js - Javascript Chart.js

Javascript examples for Chart.js:Doughnut Chart

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Description

Implement concentric doughnut charts using Chart.js

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
      <script type="text/javascript" src="https://rawgit.com/nnnick/Chart.js/2.0.0-alpha3/Chart.js"></script> 
      <script type="text/javascript">
    window.onload=function(){//from   ww  w .  j a  v a2s.com
var randomScalingFactor = function() {
    return Math.round(Math.random() * 100);
};
var randomColorFactor = function() {
    return Math.round(Math.random() * 255);
};
var config = {
    type: 'doughnut',
    data: {
        datasets: [{
            data: [
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
            ],
                backgroundColor: [
                "#F7464A",
                "#46BFBD",
                "#FDB45C",
                "#949FB1",
                "#4D5360",
            ],
        }, {
            data: [
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
            ],
                backgroundColor: [
                "#F7464A",
                "#46BFBD",
                "#FDB45C",
                "#949FB1",
                "#4D5360",
            ],
        }, {
            data: [
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
                randomScalingFactor(),
            ],
                backgroundColor: [
                "#F7464A",
                "#46BFBD",
                "#FDB45C",
                "#949FB1",
                "#4D5360",
            ],
        }],
        labels: [
            "Red",
            "Green",
            "Yellow",
            "Grey",
            "Dark Grey"
        ]
    },
    options: {
        responsive: true
    }
};
var ctx = document.getElementById("chart-area").getContext("2d");
var myDoughnut = new Chart(ctx, config);
    }

      </script> 
   </head> 
   <body> 
      <div id="canvas-holder" style="width:100%"> 
         <canvas id="chart-area" width="500" height="500"></canvas> 
      </div>  
   </body>
</html>

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