From 8424b51affaf9820c1496b4289dc46372e73d62d Mon Sep 17 00:00:00 2001
From: neverland <chenjiahan@buaa.edu.cn>
Date: Thu, 10 May 2018 20:41:15 +0800
Subject: [PATCH] [Improvement] NoticeBar: add ref check (#1037)

---
 packages/notice-bar/index.vue | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/packages/notice-bar/index.vue b/packages/notice-bar/index.vue
index 2006847bc..eabe9c5e0 100644
--- a/packages/notice-bar/index.vue
+++ b/packages/notice-bar/index.vue
@@ -90,8 +90,13 @@ export default create({
     text: {
       handler() {
         this.$nextTick(() => {
-          const offsetWidth = this.$refs.content.getBoundingClientRect().width;
-          const wrapWidth = this.$refs.wrap.getBoundingClientRect().width;
+          const { wrap, content } = this.$refs;
+          if (!wrap || !content) {
+            return;
+          }
+
+          const wrapWidth = wrap.getBoundingClientRect().width;
+          const offsetWidth = content.getBoundingClientRect().width;
           if (this.scrollable && offsetWidth > wrapWidth) {
             this.wrapWidth = wrapWidth;
             this.offsetWidth = offsetWidth;