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图表 v3 我在一个图表上有多个数据集，我找不到隐藏特定数据集的合适变量。

我以前使用的图表 v2

mychart.config.data.datasets[0]._meta[0].hidden = true;
mychart.config.data.datasets[0]._meta[0].hidden = null;
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1 回答 1

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您可以将toggleDataVisibility用于饼图和圆环图以及setDatasetVisibility所有其他图表类型

活生生的例子：

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');
const chart = new Chart(ctx, options);

document.getElementById("myBtn").addEventListener("click", () => {
  const {
    type
  } = chart.config;
  if (type === 'pie' || type === 'doughnut') {
    // Pie and doughnut charts only have a single dataset and visibility is per item
    chart.toggleDataVisibility(0);
  } else {
    chart.setDatasetVisibility(0, !chart.isDatasetVisible(0));
  }
  chart.update();
});
<body>
  <canvas id="chartJSContainer" width="600" height="400"></canvas>
  <button id="myBtn">
    Hide dataset
  </button>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.3.2/chart.js"></script>
</body>

于 2021-06-16T13:26:55.547 回答