Format X label on mouse hover in chart.js - Javascript Chart.js

Javascript examples for Chart.js:Chart Configuration

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Description

Format X label on mouse hover in chart.js

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <title>chart.js 2.1</title> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
      <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.13.0/moment.min.js"></script> 
      <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.0/Chart.bundle.min.js"></script> 
      <script type="text/javascript">
    window.onload=function(){/*from  w  w  w.j ava  2  s  . com*/
function newDate(days) {
  return moment().add(days, 'd');
}
var config = {
  type: 'line',
  data: {
    labels: [newDate(-4), newDate(-3), newDate(2), newDate(3), newDate(4), newDate(5), newDate(6)],
    datasets: [{
      label: "My First dataset",
      data: [1, 3, 4, 2, 1, 4, 2],
    }]
  },
  options: {
    scales: {
      xAxes: [{
        type: 'time',
        time: {
          displayFormats: {
            'millisecond': 'MMM DD',
            'second': 'MMM DD',
            'minute': 'MMM DD',
            'hour': 'MMM DD',
            'day': 'MMM DD',
            'week': 'MMM DD',
            'month': 'MMM DD',
            'quarter': 'MMM DD',
            'year': 'MMM DD',
          }
        }
      }],
    },
    tooltips: {
       callbacks: {
         title: function(tooltipItem, chartData) {
           return "Title";
        }
      }
    }
  }
};
var ctx = document.getElementById("myChart").getContext("2d");
new Chart(ctx, config);
    }

      </script> 
   </head> 
   <body> 
      <canvas id="myChart"></canvas>  
   </body>
</html>

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