Index: ssts-web/src/main/webapp/disinfectsystem/basedatamanager/tousse/idCardForm.js
===================================================================
diff -u -r12922 -r12926
--- ssts-web/src/main/webapp/disinfectsystem/basedatamanager/tousse/idCardForm.js	(.../idCardForm.js)	(revision 12922)
+++ ssts-web/src/main/webapp/disinfectsystem/basedatamanager/tousse/idCardForm.js	(.../idCardForm.js)	(revision 12926)
@@ -741,7 +741,7 @@
 			   prompt : true,
 			   fn: function(bu, txt) {
 					if(bu == 'ok'){
-						if(isNaN(txt) == false){
+						if(txt.Trim() != "" && isNaN(txt) == false){
 							top.Ext.MessageBox.confirm("请确认","确定要修改该标识牌实例的使用次数吗？",
 									function(button, text) {
 										if ("yes" == button){