From 6a4d3b7bbb462db62c4b38eb12c3f54f3fb85b56 Mon Sep 17 00:00:00 2001
From: zsun <zsun@sonicwall.com>
Date: Mon, 17 Jul 2023 17:02:28 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E5=8F=A4=E6=97=B6=E6=9C=9F=E5=B7=A5?=
 =?UTF-8?q?=E5=85=B7=E5=87=BD=E6=95=B0(=E8=8A=82=E9=80=89)?=
MIME-Version: 1.0
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---
 js/util.js | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 js/util.js

diff --git a/js/util.js b/js/util.js
new file mode 100644
index 0000000..b821589
--- /dev/null
+++ b/js/util.js
@@ -0,0 +1,9 @@
+/**
+* 上古时期的工具函数，可以理解为什么要定义这些函数，但是这个第一行`var D=document;`真是的是一言难尽！
+*/
+
+var D=document;
+function $id(id){return typeof id==='string'?D.getElementById(id):id}
+function $tag(el,tag){return $id(el).getElementsByTagName(tag)}
+var getDocumentHeight=function(){return Math.max(D.documentElement.scrollHeight,D.documentElement.clientHeight)}
+var isIE = (D.all) ? true : false;
\ No newline at end of file
-- 
Gitee