Add undefinedText property.

index.html

@@ -68,7 +68,7 @@
     
     <a href="https://github.com/wenzhixin/bootstrap-table" class="fork_me"></a>
     
-    <script type="text/javascript" src="//wenzhixin.net.cn/js/jquery-1.8.3.min.js"></script>
+    <script type="text/javascript" src="//wenzhixin.net.cn/js/jquery.min.js"></script>
     <script type="text/javascript" src="//wenzhixin.net.cn/js/bootstrap.min.js"></script>
     <script type="text/javascript" src="jquery.bootstrap.table.js"></script>
     <script type="text/javascript">
@@ -170,6 +170,6 @@
         });
       });
     </script>
-    <script type="text/javascript" src="//wenzhixin.net.cn/js/analytics.js"></script>
+    <script src="//wenzhixin.net.cn/js/analytics.js"></script>
   </body>
 </html>

jquery.bootstrap.table.js

@@ -132,7 +132,7 @@
 					if (typeof that.header.formatters[j] === 'function') {
 						value = that.header.formatters[j](value, item);
 					}
-					html.push('<td style="' + that.header.styles[j] + '">' + value + '</td>');
+					html.push('<td style="' + that.header.styles[j] + '">' + (value || that.options.undefinedText) + '</td>');
 				});
 				html.push('</tr>');
 			});
@@ -235,6 +235,7 @@
 	};
 	
 	$.fn.bootstrapTable.defaults = {
+		undefinedText: '-',
 		columns: [],
 		data: [],
 		onClickRow: function(value, row) {return false;},