diff --git a/public/static/common/js/common.js b/public/static/common/js/common.js
index 787b91aa3..70b9ba9d3 100755
--- a/public/static/common/js/common.js
+++ b/public/static/common/js/common.js
@@ -290,11 +290,12 @@ function FromInit(form_name)
 		// 错误
 		onInValid: function(validity)
 		{
+			var $this = this;
 			setTimeout(function()
 			{
 				// 错误信息
 				var $field = $(validity.field);
-				var msg = $field.data('validationMessage') || this.getValidationMessage(validity);
+				var msg = $field.data('validationMessage') || $this.getValidationMessage(validity);
 				if($field.hasClass('am-field-error'))
 				{
 					Prompt(msg);