const ctx = document.getElementById('myChart');
const data = {
  labels: ['周一', '周二', '周三','周四', '周五', '周六', '周日'], 
  datasets: [{
    label: '折线图',
    data: [165, 159, 180, 181, 156, 255, 140],
    fill: false,
    borderColor: '#389af4', // 设置线的颜色
    tension: 0.1
  }]
};
const config = {
  type: 'line', // 设置图表类型
  data: data,
  options: {
    plugins: {
      legend: {
        display: false
      }
    }
  },
};
const myChart = new Chart(ctx, config);

点击运行 》