• 先写一个文件提交

  <input type="file" id="excel-file">

• 导入xlsx.core.min.js

  <script type="text/javascript" src="xlsx.core.min.js"></script>

• 解析excel

  <script>
      $('#excel-file').change(function (e) {
  var files = e.target.files;
  var fileReader = new FileReader();
  fileReader.onload = function (ev) {
  try {
      var data = ev.target.result,
          workbook = XLSX.read(data, {
              type: 'binary'
          }), // 以二进制流方式读取得到整份excel表格对象
          persons = []; // 存储获取到的数据
  } catch (e) {
      console.log('文件类型不正确');
      return;
  }
  // 遍历每张表读取
  for (var sheet in workbook.Sheets) {
      if (workbook.Sheets.hasOwnProperty(sheet)) {
          var fromTo = workbook.Sheets[sheet]['!ref'];
          console.log(fromTo);
          var datas = workbook.Sheets[sheet];
          
          // 如果有不规范数据可以在这里进行处理datas
          
          persons = persons.concat(XLSX.utils.sheet_to_json(datas));
          break; // 只读了第一张表
      }
  }
     console.log(persons);
  };
  // 以二进制方式打开文件
  fileReader.readAsBinaryString(files[0]);
      });
  </script>

• 全部代码

  <!DOCTYPE html>
  <html>
  <head>
      <title></title>
  </head>
  <body>
  <input type="file" id="excel-file">
  </body>
  <script type="text/javascript" src="xlsx.core.min.js"></script>
  <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
  <script>
      $('#excel-file').change(function (e) {
  var files = e.target.files;
  var fileReader = new FileReader();
  fileReader.onload = function (ev) {
  try {
      var data = ev.target.result,
          workbook = XLSX.read(data, {
              type: 'binary'
          }), // 以二进制流方式读取得到整份excel表格对象
          persons = []; // 存储获取到的数据
  } catch (e) {
      console.log('文件类型不正确');
      return;
  }
  
  // 遍历每张表读取
  for (var sheet in workbook.Sheets) {
      if (workbook.Sheets.hasOwnProperty(sheet)) {
          var fromTo = workbook.Sheets[sheet]['!ref'];
          console.log(fromTo);
          var datas = workbook.Sheets[sheet];
          console.log(datas);
          // 处理不规范的数据
          for (var nums in datas) {
              console.log(nums);
              var num = nums.replace(/[^0-9]/ig, "");
              console.log(num);
              var row_data = new Array();
              row_data[0] = "A" + String(num);
              row_data[1] = "B" + String(num);
              row_data[2] = "C" + String(num);
              row_data[3] = "D" + String(num);
              row_data[4] = "E" + String(num);
              row_data[5] = "F" + String(num);
              row_data[6] = "G" + String(num);
              row_data[7] = "H" + String(num);
              row_data[8] = "I" + String(num);
              row_data[9] = "J" + String(num);
              row_data[10] = "K" + String(num);
              row_data[11] = "L" + String(num);
              row_data[12] = "M" + String(num);
              
              var arry_row = new Array();
              var count = 0;
              for (var i of row_data) {
                  if (datas[i]) {
                      arry_row[count] = datas[i].v.replace(/\s*/g,"");
                      count += 1;
                  }
              }
              // 找到正确数据的列名
              if (arry_row.indexOf("单位") < 0 || arry_row.indexOf("数量") < 0) {
                  for (var i = 0; i < row_data.length; i++) {
                      delete datas[row_data[i]];
                  }
              }
              else {
                  // 修改读取范围
                  datas["!ref"] = row_data[0] + ":" + datas['!ref'].split(':')[1];
                  break;
              }
  
          }
          persons = persons.concat(XLSX.utils.sheet_to_json(datas));
          break; // 只读了第一张表
      }
  }
  console.log(persons);
  };
  // 以二进制方式打开文件
  fileReader.readAsBinaryString(files[0]);
      });
  </script>
  
  </html>

对前端不怎么熟悉，代码比较乱，仅供参考

本文链接：时光不写博客-前端解析Excel：xlsx.core.min.js