From 255bcb8cc9dcc0d98c08af3d7c16a5fd79aea75e Mon Sep 17 00:00:00 2001
From: zhangyutong <zyt15833737572@163.com>
Date: Thu, 15 Jun 2023 13:17:02 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E5=88=A4=E6=96=AD=20?=
 =?UTF-8?q?=E6=9C=89=E5=80=BC=E6=97=B6=E6=89=8D=E8=A6=86=E7=9B=96placehold?=
 =?UTF-8?q?er?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/modules/form.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/modules/form.js b/src/modules/form.js
index 792536d9..3a0e196f 100644
--- a/src/modules/form.js
+++ b/src/modules/form.js
@@ -315,9 +315,11 @@ layui.define(['lay', 'layer', 'util'], function(exports){
             }
             
             // 删除input已有文本并放入 placeholder，方便输入
-            input.attr('placeholder', input.val());      
-            input.val(''); // 清空输入框的值
-
+            if (input.val()) {
+              // 有值时才删除并替换placeholder
+              input.attr('placeholder', input.val());
+              input.val(''); // 清空输入框的值
+            }
             followScroll();
           }