如何在饼图 chart.js 中创建图例位置？

Question

我正在使用图表 js 来开发我的饼图。我想像这样创建图例位置。谁能帮我解决这个问题...

这是我的代码...我实际上想要的结果就像图片一样。当我在 html 中使用 css zoom:70% 并使 javascript 不起作用时出现错误..

<!DOCTYPE html>
<html>
<head>
 <title></title>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
 <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.4.0/Chart.min.js"></script>
</head>
<style type="text/css">
  body{ background-color: #1f1d1d; font-family: Roboto, Myriad Pro, Segoe UI;zoom:70%;}
  .col-sm-1.content { border: 2px solid #1f1d1d}
</style>
<body>
   <div class="col-sm-1 content" style="background-color: #4f4f4f; height:377px;"><br><br><br>
        <canvas id="myChartBBC" style="width:375px; height: 375px;"></canvas>
      <br>
        <p style="text-align:center; color: #fff;font-size: 14px;"><i>Browse by Channel</i></p>
      </div>
</body>
<script>
  var ctx = document.getElementById('myChartBBC').getContext('2d');
  var chart = new Chart(ctx, {
      // The type of chart we want to create
      type: 'pie',
      // The data for our dataset
      data: {
          labels: ["USSD", "URP", "MyTsel App", "Chatbot"],
          datasets: [{
              backgroundColor: ['rgb(12, 146, 204)',
                       'rgb(255, 67, 0)',
                       'rgb(131, 0, 255)',
                       'rgb(250, 255, 0)'
                       ],
              borderColor: ['rgb(12, 146, 204)',
                      'rgb(255, 67, 0)',
                      'rgb(131, 0, 255)',
                      'rgb(250, 255, 0)'
                      ],
              data: [73, 17, 3, 7],
          }]
      },

      // Configuration options go here
      options: {
        legend:{
          position: 'bottom',
          labels:{
            fontColor: "white"
          }
        }
      }
  });
  </script>
</html>

Answer 1

试试这个更新后的代码。

<!doctype html>
<html>

<head>
    <title>Pie Chart</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <style type="text/css">
    body {
        background-color: #1f1d1d;
        font-family: Roboto, Myriad Pro, Segoe UI;
        width: 800px;
        height: 800px;
    }
    </style>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.4.0/Chart.min.js"></script>
</head>

<body>
    <div id="canvas-holder" style="width:30%;background-color: #4f4f4f; height:35%;">
        <canvas id="chart-area"></canvas>
        <p style="text-align:center; color: #fff;font-size: 14px;"><i>Browse by Channel</i></p>
    </div>
    <script>
    var config = {
        type: 'pie',
        data: {
            labels: ["USSD", "URP", "MyTsel App", "Chatbot"],
            datasets: [{
                backgroundColor: ['rgb(12, 146, 204)',
                    'rgb(255, 67, 0)',
                    'rgb(131, 0, 255)',
                    'rgb(250, 255, 0)'
                ],
                borderColor: ['rgb(12, 146, 204)',
                    'rgb(255, 67, 0)',
                    'rgb(131, 0, 255)',
                    'rgb(250, 255, 0)'
                ],
                data: [73, 17, 3, 7],
            }]
        },
        options: {
            responsive: true,
            legend: {
                position: 'bottom',
                labels: {
                    fontColor: "white",
                    boxWidth: 20,
                    padding: 20
                }
            }
        }
    };

    window.onload = function() {
        var ctx = document.getElementById('chart-area').getContext('2d');
        window.myPie = new Chart(ctx, config);
    };
    </script>
</body>

</html>

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