From 8c3427395c1d996c9916813395e6befcd9522fa5 Mon Sep 17 00:00:00 2001
From: yutent <yutent.io@gmail.com>
Date: Thu, 27 Apr 2023 11:57:17 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E5=88=9D=E5=A7=8B=E5=8C=96?=
 =?UTF-8?q?=E6=97=B6=E5=87=BA=E7=8E=B0undefined=E7=9A=84bug?=
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---
 src/pages/playground/app.vue | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/pages/playground/app.vue b/src/pages/playground/app.vue
index aa0fa67..7ed4518 100644
--- a/src/pages/playground/app.vue
+++ b/src/pages/playground/app.vue
@@ -55,9 +55,9 @@ export default {
           } catch (e) {}
         }
 
-        this.html = code.html
-        this.js = code.js
-        this.css = code.css
+        this.html = code.html || ''
+        this.js = code.js || ''
+        this.css = code.css || ''
         this.updatePreview()
       }
       this.$needUpdate = true