uploadDocument Method

uploadDocument = function(uri, data, offset, length) 

function uploadDownloadDocumentExample(doc) { 
   // doc is lt.Documents.Document object 
   var overall = []; 
   var dataSize = 1024 * 1024; 
   var location = 0; 
   var length = doc.values.fileLength; 
   var remaining = length; 
   console.log("File Length: " + length); 
   var done; 
   done = function (data) { 
      console.log("New data of length {0}", data.length); 
      overall = overall.concat(data); 
      location += data.length; 
      remaining = length - data.length; 
      if (remaining <= 0) { 
         // get an arraybuffer from the byte array 
         var uploadLength = overall.length; 
         var bytes = new Uint8Array(uploadLength); 
         overall.forEach(function (val, i) { 
            bytes[i] = val; 
         }); 
         var arrayBuffer = bytes.buffer; 
         // Done with downloading file. Now upload. 
         lt.Documents.DocumentFactory.beginUpload().done(function (uri) { 
            var filePosition = 0; 
            // if we aren't done, send the next request. 
            var doDone = function (userData) { 
               filePosition += dataSize; 
               if (filePosition < uploadLength) { 
                  lt.Documents.DocumentFactory.uploadDocument(uri, arrayBuffer, filePosition, dataSize).done(doDone); 
               } 
               else { 
                  // Fully uploaded 
                  // done, load the document 
                  lt.Documents.DocumentFactory.loadFromUri(uri, null) 
                      .done(function (doc) { 
                         console.log("Document was loaded succesfully"); 
                      }); 
               } 
            }; 
            // Upload next part 
            lt.Documents.DocumentFactory.uploadDocument(uri, arrayBuffer, filePosition, dataSize).done(doDone); 
         }); 
      } 
      else { 
         // Download it 
         lt.Documents.DocumentFactory.downloadDocument(doc.documentId, null, location, dataSize) 
             .done(done); 
      } 
   }; 
   // Download it 
   lt.Documents.DocumentFactory.downloadDocument(doc.documentId, null, location, dataSize) 
       .done(done); 
}