score:2

Accepted answer

you can use multiline labels for that by providing the labbels in an array like so:

var options = {
  type: 'line',
  data: {
    labels: [
      [
        "red",
        "second line"
      ],
      [
        "blue",
        "second line"
      ],
      [
        "yellow",
        "second line"
      ],
      [
        "green",
        "second line"
      ],
      [
        "purple",
        "second line"
      ],
      [
        "orange",
        "second line"
      ]
    ],
    datasets: [{
        label: '# of votes',
        data: [12, 19, 3, 5, 2, 3],
        borderwidth: 1
      },
      {
        label: '# of points',
        data: [7, 11, 5, 8, 3, 7],
        borderwidth: 1
      }
    ]
  },
  options: {
    scales: {
      yaxes: [{
        ticks: {
          reverse: false
        }
      }]
    }
  }
}

var ctx = document.getelementbyid('chartjscontainer').getcontext('2d');
new chart(ctx, options);
<body>
  <canvas id="chartjscontainer" width="600" height="400"></canvas>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/chart.js/2.9.4/chart.js"></script>
</body>


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