From 591df8865aef299aecf58a3382a8156d4d4ea7b4 Mon Sep 17 00:00:00 2001
From: windy <1374721899@qq.com>
Date: Fri, 6 Dec 2019 10:46:22 +0800
Subject: [PATCH] update

---
 src/core/platform/web/jquery/fn.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/platform/web/jquery/fn.js b/src/core/platform/web/jquery/fn.js
index 4798e90af..341719b54 100644
--- a/src/core/platform/web/jquery/fn.js
+++ b/src/core/platform/web/jquery/fn.js
@@ -99,7 +99,7 @@ if (BI.jQuery) {
                 }
 
                 // BI-56945 场景: 对'啊a'标红, a为keyword, 此时tidx为1, pidx为0, 此时使用tidx显然'啊'就无法标红了
-                if (tidx >= 0 && pidx > tidx) {
+                if (tidx >= 0 && BI.isNotNull(pidx) && pidx > tidx) {
                     // 标红的text未encode
                     this.append(BI.htmlEncode(textLeft.substr(0, tidx)));
                     this.append(BI.$("<span>").addClass("bi-keyword-red-mark")