SOURCE

  <script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.14.0/xlsx.core.min.js"></script>
  <input type="file"onchange="importf(this)" />
  <p id="excelContent"></p>
<script>

      <script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.14.0/xlsx.core.min.js"></script>
  <input type="file"onchange="importf(this)" />
  <p id="excelContent"></p>
  <script>
         var wb;//读取完成的数据

var rABS = false; //是否将文件读取为二进制字符串



//开始导入

function importf(obj) {

    if(!obj.files) {

        return;

    }

    var f = obj.files[0];

    var reader = new FileReader();

    reader.onload = function(e) {

        var data = e.target.result;

        if(rABS) {

            wb = XLSX.read(btoa(fixdata(data)), {//手动转化

                type: 'base64'

            });

        } else {

            wb = XLSX.read(data, {

                type: 'binary'

            });

        }

        /**

         * wb.SheetNames[0]是获取Sheets中第一个Sheet的名字

         * wb.Sheets[Sheet名]获取第一个Sheet的数据

         */

        var excelJson = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]);

        console.log('这个是将数据转换成json格式',excelJson)

        document.getElementById("excelContent").innerHTML= JSON.stringify( excelJson );

    };

    if(rABS) {

        reader.readAsArrayBuffer(f);

    } else {

        reader.readAsBinaryString(f);

    }

}



//文件流转BinaryString

function fixdata(data) {

    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;

}</script>