前端讀取excel檔案

居无常發表於2024-06-08
前端Excel
<!DOCTYPE html>
<html>
  <head>
    <title>js讀取Excel檔案</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  </head>
  <body class="Body noover">
    <input type="file" id="file" />
    <div id="demo"></div>
  </body>
  <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
  <script src="https://blog-static.cnblogs.com/files/xieyongbin/xlsx.full.min.js"></script>
  <script type="text/javascript">
    $(document).ready(function () {
      /*
        FileReader共有4種讀取方法：
        1.readAsArrayBuffer(file)：將檔案讀取為ArrayBuffer。
        2.readAsBinaryString(file)：將檔案讀取為二進位制字串
        3.readAsDataURL(file)：將檔案讀取為Data URL
        4.readAsText(file, [encoding])：將檔案讀取為文字，encoding預設值為'UTF-8'
                     */
      var wb; //讀取完成的資料
      var rABS = false; //是否將檔案讀取為二進位制字串

      function fixdata(data) {
        //檔案流轉BinaryString
        var o = "",
          l = 0,
          w = 10240;
        for (; l < data.byteLength / w; ++l)
          o += String.fromCharCode.apply(
            null,
            new Uint8Array(data.slice(l * w, l * w + w))
          );
        o += String.fromCharCode.apply(null, new Uint8Array(data.slice(l * w)));
        return o;
      }

      $("#file").change(function () {
        if (!this.files) {
          return;
        }
        var f = this.files[0];
        var reader = new FileReader();
        reader.onload = function (e) {
          var data = e.target.result;
          if (rABS) {
            wb = XLSX.read(btoa(fixdata(data)), {
              type: "base64",
            });
          } else {
            wb = XLSX.read(data, {
              type: "binary",
            });
          }
          document.getElementById("demo").innerHTML = JSON.stringify(
            XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]])
          );
        };
        if (rABS) {
          reader.readAsArrayBuffer(f);
        } else {
          reader.readAsBinaryString(f);
        }
      });
    });
  </script>
</html>

　　

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