如何显示堆叠折线图

<canvas id="stackedLineChart"></canvas>

// 获取 canvas 元素
const canvas = document.getElementById('stackedLineChart');

// 配置数据
const data = {
  labels: ['January', 'February', 'March', 'April', 'May'],
  datasets: [
    {
      label: 'Dataset 1',
      data: [10, 20, 30, 40, 50],
      backgroundColor: 'rgba(255, 99, 132, 0.2)',
      borderColor: 'rgba(255, 99, 132, 1)',
      borderWidth: 1,
      fill: true
    },
    {
      label: 'Dataset 2',
      data: [20, 30, 40, 50, 60],
      backgroundColor: 'rgba(54, 162, 235, 0.2)',
      borderColor: 'rgba(54, 162, 235, 1)',
      borderWidth: 1,
      fill: true
    },
    // 添加更多数据集...
  ]
};

// 配置选项
const options = {
  scales: {
    x: {
      display: true,
      title: {
        display: true,
        text: 'Month'
      }
    },
    y: {
      display: true,
      title: {
        display: true,
        text: 'Value'
      }
    }
  }
};

// 创建堆叠折线图
const stackedLineChart = new Chart(canvas, {
  type: 'line',
  data: data,
  options: options
});