chart.js onHover 2.6.1

by beaver71

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.min.js"></script>
<canvas id="myChart" width="400" height="200"></canvas>

JavaScript

var data = {
  labels: ["January", "February", "March", "April", "May", "June", "July"],
  datasets: [{
    label: "My First dataset",
    backgroundColor: "rgba(255,99,132,0.2)",
    borderColor: "rgba(255,99,132,1)",
    borderWidth: 2,
    hoverBackgroundColor: "rgba(255,99,132,0.4)",
    hoverBorderColor: "rgba(255,99,132,1)",
    data: [65, 59, 20, 81, 56, 55, 40],
  }]
};
var option = {
  legend: false,
  title: {
    display: true,
  },
  hover: { 
  	onHover: function(evt, item) { 
    	if (item.length) {
      	console.log("onHover", item, evt.type);
        console.log(">data", item[0]._index, data.datasets[0].data[item[0]._index]);
      }
      
  	}
  },
  onClick: function(evt) {
    var el = myLineChart.getElementAtEvent(evt);
    console.log("onClick",el,evt);
  }
};

var myLineChart = Chart.Line('myChart', {
  data: data,
  options: option
});