admin管理员组

文章数量:1399313

I've got the following function making doughnut charts in ChartJS, the function imports the data, label text, and the id of the element. For some reason the options legend labels does not work for me. The default color of '#666' is not usable for my site's layout either.

my function:

function newDoughnutChart(id, labels, data) {
    var donutChartCanvas = $(id).get(0).getContext('2d')
    var donutData = {
        labels: labels,
        datasets: [
            {
                data: data,
                backgroundColor: backgroundColor,
            }
        ]
    }
    var donutOptions = {
        maintainAspectRatio: false,
        responsive: true,
        options: {
            legend: {
                labels: {
                    usePointStyle: true,
                    fontColor: "#fff",
                }
            }
        }
    }
    new Chart(donutChartCanvas, {
        type: 'doughnut',
        data: donutData,
        options: donutOptions
    })
}

backgroundColor is a variable I've set globally for this js file.

I've got the following function making doughnut charts in ChartJS, the function imports the data, label text, and the id of the element. For some reason the options legend labels does not work for me. The default color of '#666' is not usable for my site's layout either.

my function:

function newDoughnutChart(id, labels, data) {
    var donutChartCanvas = $(id).get(0).getContext('2d')
    var donutData = {
        labels: labels,
        datasets: [
            {
                data: data,
                backgroundColor: backgroundColor,
            }
        ]
    }
    var donutOptions = {
        maintainAspectRatio: false,
        responsive: true,
        options: {
            legend: {
                labels: {
                    usePointStyle: true,
                    fontColor: "#fff",
                }
            }
        }
    }
    new Chart(donutChartCanvas, {
        type: 'doughnut',
        data: donutData,
        options: donutOptions
    })
}

backgroundColor is a variable I've set globally for this js file.

  • javascript
  • chart.js
Share Improve this question asked Jun 8, 2021 at 19:52 sbrevolution5sbrevolution5 1833 silver badges11 bronze badges
Add a ment  | 

3 Answers 3

Reset to default 4

The legend config has been moved to the plugins section

Example:

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: {
    plugins: {
      legend: {
        labels: {
          color: 'red'
        }
      }
    }
  }
}

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./ajax/libs/Chart.js/3.3.2/chart.js"></script>
</body>

    var donutOptions = {
    maintainAspectRatio: false,
    responsive: true,
    options: {
        plugins: {
          legend: {
              display: true,
              labels: {
                  color: 'rgb(255, 99, 132)'
              }
          }
        }
      }
    }

You can change the color by grabbing the class of that div tag using CSS selector. But It's not the best idea because it will change the color in your whole app.

本文标签： javascriptIn ChartJS how do I change the color of a label in the legendStack Overflow

版权声明：本文标题：javascript - In ChartJS how do I change the color of a label in the legend? - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1744210317a2595385.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。