Handle Click events on Pie Charts in Chart.js - Javascript Chart.js

Javascript examples for Chart.js:Pie Chart

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Description

Handle Click events on Pie Charts in Chart.js

Demo Code

ResultView the demo in separate window 

<html>
   <head>
      <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.js">

      </script> 
   </head> 
   <body> 
      <canvas id="myChart" width="200" height="200"></canvas> 
      <script>
var ctx = document.getElementById("myChart").getContext('2d');
var myChart = new Chart(ctx, {//from  w  w  w. j  av a 2  s .c  o m
type: 'bar',
data: {
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
    datasets: [{
        label: '# of Votes',
        data: [12, 19, 3, 5, 2, 3],
        backgroundColor: [
            'rgba(255, 99, 132, 0.2)',
            'rgba(54, 162, 235, 0.2)',
            'rgba(255, 206, 86, 0.2)',
            'rgba(75, 192, 192, 0.2)',
            'rgba(153, 102, 255, 0.2)',
            'rgba(255, 159, 64, 0.2)'
        ],
        borderColor: [
            'rgba(255,99,132,1)',
            'rgba(54, 162, 235, 1)',
            'rgba(255, 206, 86, 1)',
            'rgba(75, 192, 192, 1)',
            'rgba(153, 102, 255, 1)',
            'rgba(255, 159, 64, 1)'
        ],
        borderWidth: 1
    }]
},
options: {
    scales: {
        yAxes: [{
            ticks: {
                beginAtZero:true
            }
        }]
    },
onClick:function(e){
    var activePoints = myChart.getElementsAtEvent(e);
    var selectedIndex = activePoints[0]._index;
    console.log(this.data.datasets[0].data[selectedIndex]);
}
}
});

      </script>  
   </body>
</html>

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