一起学Chart.js

发表于

Chart.js作图再好不过了.

一个图表控件集合，使用html5的canvas进行绘制。

先看效果图咯

上代码

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>chartjs示例</title>
  <link href="https://cdn.bootcss.com/semantic-ui/2.2.13/semantic.min.css" rel="stylesheet">
  <script src="https://cdn.bootcss.com/Chart.js/2.7.0/Chart.min.js"></script>
</head>
<body>
  <div class="ui container">
    <div class="ui dividing header">饼状图示例</div>
    <canvas id="myChart"></canvas>
  </div>
  <script>
    let ctx = document.getElementById('myChart').getContext('2d');
    <!-- 实例化Chart对象 -->
    let chart = new Chart(ctx, {
      type: 'pie', // pie饼状图, line:折线图, bar柱状图
      data: {
        labels: ['北京', '上海', '广州', '杭州', '成都', '南京'],
        datasets: [{
          label: "工作热度值",
          data: [341232, 123123, 123324, 123324, 120123, 88812],
          backgroundColor: [
            'rgba(255, 199, 32, 0.6)',
            'rgba(54, 162, 235, 0.6)',
            'rgba(255, 206, 96, 0.6)',
            'rgba(175, 12, 192, 0.6)',
            'rgba(153, 142, 255, 0.6)',
            'rgba(255, 51, 64, 0.6)'
          ],
          borderWidth: 1,
          borderColor: '#777',
          hoverBorderWidth: 3,
          hoverBorderColor: '#000'
        }],
      },
      options: {
        title: {
          display: true,
          text: "中国各大城市IT热度",
          fontSize: 25
        },
        legend: {
          display: true,
          position: 'top',
          labels: {
            fontColor: '#000'
          },
          onClick: function() {
            alert("点我干嘛, dottie");
          }
        },
        layout: {
          padding: {
            left: 10,
            right: 10
          }
        },
        tooltips: {
          enable: false
        }
      }
    })
  </script>
</body>

</html>

写的例子很简单, 当然也得益于前辈们对该框架封装好! 具体想深入学习的伙伴们可以去看官方文档哈,

传送门chart.js

😜😜😜