[Chartjs]-Chart.js 3.5.1 Attribute question about zeroLineColor

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3👍

✅

You can use the scriptable options for this:

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: {
    scales: {
      y: {
        grid: {
          color: (ctx) => (ctx.index === 0 ? 'black' : 'rgba(0, 0, 0, 0.1)')
        }
      }
    }
  }
}

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/3.5.1/chart.js"></script>
</body>

1👍

I have finally found the answer! if it of use to anyone, then you need to add a scriptable component to grid:

          grid: {
            color: context => context.tick.value == 0 ? '#555555' : '#CCCCCC'
          }

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