From f9d510ea78bbb919ed4dbaf0b1ad1577c7b2aa46 Mon Sep 17 00:00:00 2001
From: Pan <panfree23@gmail.com>
Date: Fri, 4 May 2018 10:26:29 +0800
Subject: [PATCH] perf[el-dragDialog]: use curring

---
 src/directive/el-dragDialog/drag.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/directive/el-dragDialog/drag.js b/src/directive/el-dragDialog/drag.js
index aa361c7d..3e3fb62a 100644
--- a/src/directive/el-dragDialog/drag.js
+++ b/src/directive/el-dragDialog/drag.js
@@ -6,13 +6,13 @@ export default{
     dragDom.style.cssText += ';top:0px;'
 
     // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
-    function getStyle(dom, attr) {
-      if (dom.currentStyle) {
-        return dom.currentStyle[attr]
+    const getStyle = (function() {
+      if (window.document.currentStyle) {
+        return (dom, attr) => dom.currentStyle[attr]
       } else {
-        return getComputedStyle(dom, false)[attr]
+        return (dom, attr) => getComputedStyle(dom, false)[attr]
       }
-    }
+    })()
 
     dialogHeaderEl.onmousedown = (e) => {
       // 鼠标按下，计算当前元素距离可视区的距离