diff --git a/lib/xlsx-to-json.js b/lib/xlsx-to-json.js
index cfff728..e5fb8e5 100755
--- a/lib/xlsx-to-json.js
+++ b/lib/xlsx-to-json.js
@@ -161,9 +161,9 @@ function parseHead(sheet, headIndex) {
     //表类型 普通表  主表 引用表
     sheetType: SheetType.NORMAL,
 
-    getIdKey:function(){
+    getIdKey: function() {
       let id_col_index = this.types.indexOf(DataType.ID);
-      if(id_col_index < 0){
+      if (id_col_index < 0) {
         throw '获取不到id列的名字';
       }
       return this.names[id_col_index];
@@ -195,75 +195,83 @@ function parseRow(row, rowIndex, head) {
   let result = {};
   let id;
 
+  console.log('parsing row', row);
+
   row.forEach((cell, index) => {
 
-    if (cell) {
+    // if (cell) {
 
-      let name = head.names[index];
-      let type = head.types[index];
+    let name = head.names[index];
+    let type = head.types[index];
 
-      switch (type) {
-        case DataType.ID: // number string boolean
-          if (isNumber(cell)) {
-            id = Number(cell);
-          } else {
-            id = cell;
-          }
-          result[name] = id;
-          break;
-        case DataType.UNKOWN: // number string boolean
-          if (isNumber(cell)) {
-            result[name] = Number(cell);
-          } else if (isBoolean(cell)) {
-            result[name] = toBoolean(cell);
-          } else {
+    switch (type) {
+      case DataType.ID: // number string boolean
+        if (isNumber(cell)) {
+          id = Number(cell);
+        } else {
+          id = cell;
+        }
+        result[name] = id;
+        break;
+      case DataType.UNKOWN: // number string boolean
+        if (isNumber(cell)) {
+          result[name] = Number(cell);
+        } else if (isBoolean(cell)) {
+          result[name] = toBoolean(cell);
+        } else {
+          if (cell) {
             result[name] = cell;
           }
-          break;
-        case DataType.DATE:
-          if (isNumber(cell)) {
-            //xlsx's bug!!!
-            result[name] = numdate(cell);
-          } else {
+        }
+        break;
+      case DataType.DATE:
+        if (isNumber(cell)) {
+          //xlsx's bug!!!
+          result[name] = numdate(cell);
+        } else {
+          if (cell) {
             result[name] = cell.toString();
           }
-          break;
-        case DataType.STRING:
-          result[name] = cell.toString();
-          break;
-        case DataType.NUMBER:
-          //+xxx.toString() '+' means convert it to number
-          if (isNumber(cell)) {
-            result[name] = Number(cell);
-          } else {
-            console.warn("type error at [" + rowIndex + "," + index + "]," + cell + " is not a number");
-          }
-          break;
-        case DataType.BOOL:
-          result[name] = toBoolean(cell);
-          break;
-        case DataType.OBJECT: //support {number boolean string date} property type
+        }
+        break;
+      case DataType.STRING:
+        result[name] = cell.toString();
+        break;
+      case DataType.NUMBER:
+        //+xxx.toString() '+' means convert it to number
+        if (isNumber(cell)) {
+          result[name] = Number(cell);
+        } else {
+          console.warn("type error at [" + rowIndex + "," + index + "]," + cell + " is not a number");
+        }
+        break;
+      case DataType.BOOL:
+        result[name] = toBoolean(cell);
+        break;
+      case DataType.OBJECT: //support {number boolean string date} property type
+        if (cell) {
           result[name] = array2object(cell.split(';'));
-          break;
-        case DataType.ARRAY: //[number] [boolean] [string]  todo:support [date] type
-          result[name] = parseBasicArrayField(cell, arraySeparator);
-          break;
-        case DataType.OBJECT_ARRAY:
-          result[name] = parseObjectArrayField(cell);
-          break;
-        default:
-          // foo#[]| 处理自定义数组分隔符
-          if (type.indexOf(DataType.ARRAY) !== -1) {
-            // if (!type.endsWith(DataType.ARRAY)) {
-            let separator = type.substr(-1, 1); //get the last character
-            result[name] = parseBasicArrayField(cell, separator);
-            // }
-          } else {
-            console.log('unrecognized type', '[' + rowIndex + ',' + index + ']', cell, typeof(cell));
-          }
-          break;
-      }
+        }
+        break;
+      case DataType.ARRAY: //[number] [boolean] [string]  todo:support [date] type
+        result[name] = parseBasicArrayField(cell, arraySeparator);
+        break;
+      case DataType.OBJECT_ARRAY:
+        result[name] = parseObjectArrayField(cell);
+        break;
+      default:
+        // foo#[]| 处理自定义数组分隔符
+        if (type.indexOf(DataType.ARRAY) !== -1) {
+          // if (!type.endsWith(DataType.ARRAY)) {
+          let separator = type.substr(-1, 1); //get the last character
+          result[name] = parseBasicArrayField(cell, separator);
+          // }
+        } else {
+          console.log('unrecognized type', '[' + rowIndex + ',' + index + ']', cell, typeof(cell));
+        }
+        break;
     }
+    // }
   });
 
   return result;
@@ -397,10 +405,11 @@ function isNumberArray(arr) {
  */
 function isNumber(value) {
 
+  if (typeof value === 'number') {
+    return true;
+  }
+
   if (value) {
-    if (typeof value === 'number') {
-      return true;
-    }
     return !isNaN(+value.toString());
   }