title: Parsing Excel sheet with js-xlsx
body: <p>I am trying to parse all the excel files in a directory specified by the user but the <b>js-xlsx</b> library I am using seems to need manual navigation.</p>
  
  <pre><code>var url = "/test-files/test.xlsx"; &lt;-------- Located in the project directory
  var oReq = new XMLHttpRequest();
  oReq.open("GET", url, true);
  oReq.responseType = "arraybuffer";
  
  oReq.onload = function(e) {
      var arraybuffer = oReq.response;
  
      var data = new Uint8Array(arraybuffer);
      var arr = new Array();
      for (var i = 0; i != data.length; i++) arr[i] = String.fromCharCode(data[i]);
      var bstr = arr.join("");
  
      var workbook = XLSX.read(bstr, {
          type: "binary"
      });
  }
  
  oReq.send();
  </code></pre>
  
  <p>The code needs to be dynamic in that it can open an excel file anywhere. <p>
  Is there any way that I can use a fileentry object with <b>js-xlsx</b> library to parse an excel file?</p>