getFileAsync

gistfile1.txt

    function GetDocumentAsPdf(){
      Office.context.document.getFileAsync(Office.FileType.Pdf, {sliceSize: 65536},
        function (result) {
          if (result.status == "succeeded") {
            // If the getFileAsync call succeeded, then
            // result.value will return a valid File Object.
            var myFile = result.value;
            var sliceCount = myFile.sliceCount;
            var slicesReceived = 0, gotAllSlices = true, docdataSlices = [];
            //app.showNotification("File size:" + myFile.size + " #Slices: " + sliceCount);
            console.log("File size:" + myFile.size + " #Slices: " + sliceCount);

            // Get the file slices.
            getSliceAsync(myFile, 0, sliceCount, gotAllSlices, docdataSlices, slicesReceived);
          }
          else {
            //app.showNotification("Error:", result.error.message);
            console.log("Error:" + result.error.message);
          }
      });
    }