销售数据仪表盘

通过组合多种 Chart.js 图表，可以实现一个完整的销售数据仪表盘，帮助用户从多个角度分析销售情况。以下示例包括柱状图、折线图和饼图，直观展示销售趋势与结构。

const ctxBar = document.getElementById("salesBar").getContext("2d");
const salesBar = new Chart(ctxBar, {
  type: "bar",
  data: {
    labels: ["一月", "二月", "三月", "四月", "五月"],
    datasets: [
      {
        label: "销售额",
        data: [120, 150, 170, 140, 180],
        backgroundColor: "rgba(54, 162, 235, 0.7)",
      },
    ],
  },
  options: {
    responsive: true,
    plugins: { legend: { display: true } },
  },
});

const ctxLine = document.getElementById("salesLine").getContext("2d");
const salesLine = new Chart(ctxLine, {
  type: "line",
  data: {
    labels: ["一月", "二月", "三月", "四月", "五月"],
    datasets: [
      {
        label: "利润",
        data: [30, 40, 35, 50, 60],
        borderColor: "rgb(255, 99, 132)",
        fill: false,
        tension: 0.1,
      },
    ],
  },
  options: {
    responsive: true,
    plugins: { legend: { display: true } },
  },
});

const ctxPie = document.getElementById("salesPie").getContext("2d");
const salesPie = new Chart(ctxPie, {
  type: "pie",
  data: {
    labels: ["电子产品", "服装", "家居"],
    datasets: [
      {
        label: "销售占比",
        data: [45, 30, 25],
        backgroundColor: [
          "rgba(255, 99, 132, 0.7)",
          "rgba(54, 162, 235, 0.7)",
          "rgba(255, 206, 86, 0.7)",
        ],
      },
    ],
  },
  options: {
    responsive: true,
    plugins: { legend: { display: true } },
  },
});

示例无法以 iframe 加载（请检查路径或将 demo 放到 public/）。