Changing the default font size has no effect on ChartJS

I'm trying to customize the font size for a chart by changing the default value from 40px to 14px. However, when I set Chart.defaults.global.defaultFontSize to 14, the changes don't seem to take effect. Below is the code snippet for reference. Any help would be greatly appreciated!

Chart.defaults.global.defaultFontSize = 14;

let chart = new Chart(context, {
    type: 'line',
    options:{
        animation: {
            onComplete: function(e) {
              angularContext.onChartRendered(); 
            }
        },
        layout: {
            padding: {
                left: 20,
                right: 40,
                top: 20,
                bottom: 60
            }
        },
        title: {
            text: 'Bonello Distribution',
        },
        legend: {
            display: false,
        }
    },
    data: {           
        labels: graphData.labels,
        datasets: [
            {
                label: 'My First dataset',
                data: graphData.values,
                borderColor: "#3e95cd",
                fill: false
            }
        ],
    },
});
typescriptchart.js

Answer №1

It seems that you are trying to implement old V2 syntax in a V3 environment, including your title and legend options.

To resolve this, you have two options: either downgrade to version 2.9.4 by running 

npm i <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2d4e454c5f5903475e6d1f03140319">[email protected]</a>
, or adjust your defaults assignment to: Chart.defaults.font.size = 14;.

Check out this live example:

Chart.defaults.font.size = 20;

var options = {
  type: 'line',
  data: {
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
    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: {}
}

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/3.3.2/chart.js"></script>
</body>

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