From 97b4e338e40b0ba25c38b226f4d58632d9cd65ad Mon Sep 17 00:00:00 2001
From: Hex <hex@codeigniter.org.cn>
Date: Tue, 19 Nov 2019 20:49:04 +0800
Subject: [PATCH] fix MessageBox prompt input bug

issue 1581
---
 packages/message-box/src/message-box.vue | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/message-box/src/message-box.vue b/packages/message-box/src/message-box.vue
index cc468a72..d88ac216 100644
--- a/packages/message-box/src/message-box.vue
+++ b/packages/message-box/src/message-box.vue
@@ -248,7 +248,7 @@
           }
         }
         this.editorErrorMessage = '';
-        this.$refs.input.classList.remove('invalid');
+        this.$refs.input && this.$refs.input.classList.remove('invalid');
         return true;
       },