原生JS实现excel导出原生js实现excel的导出，原生js实现excel的导出，原生js实现excel的导出，原生

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <button onclick="downloadExcel()">下载excel</button>
  <script>
    const download = (data, name) => {
      const a = document.createElement('a')

      var dataType = "\uFEFF"; //解决乱码问题
      dataType += (["ID", "姓名", "年龄"].join(','));  //添加表格的头
      dataType += '\n';

      data.forEach(v => {
        v = { id: v.id, name: decodeURIComponent(v.name), age: v.age }
        dataType += (Object.values(v).join(','));
        dataType += '\n';
      })
      var t4 = new Blob([dataType], {
        type: 'text/csv'
      });
      a.href = URL.createObjectURL(t4)
      a.setAttribute('download', name)
      a.click()
    }
    const downloadExcel = () => {
      download([
        { id: '1', name: "小杰", age: "20" },
        { id: '2', name: "小明", age: "25" },
        { id: '3', name: "小怡", age: "18" }
      ], '用户信息.xls')
    }
  </script>
</body>

</html>