From 073a71037e205bbb34909a016a111145e61318a9 Mon Sep 17 00:00:00 2001
From: fay <lfhlifenghao@gmail.com>
Date: Mon, 30 Jul 2018 20:00:16 +0800
Subject: [PATCH] update

---
 src/core/jquery.js | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/src/core/jquery.js b/src/core/jquery.js
index d234a72554..9fef84c4a7 100644
--- a/src/core/jquery.js
+++ b/src/core/jquery.js
@@ -9390,13 +9390,24 @@ jQuery.fn.offset = function( options ) {
 
 	// If we don't have gBCR, just use 0,0 rather than error
 	// BlackBerry 5, iOS 3 (original iPhone)
-	if ( typeof elem.getBoundingClientRect !== core_strundefined ) {
-		box = elem.getBoundingClientRect();
-	}
+	// if ( typeof elem.getBoundingClientRect !== core_strundefined ) {
+	// 	box = elem.getBoundingClientRect();
+	// }
+	// 解决transform下的offset问题
+	var el = elem,
+	offsetLeft = 0,
+	offsetTop  = 0;
+
+	do{
+		offsetLeft += el.offsetLeft;
+		offsetTop  += el.offsetTop;
+
+		el = el.offsetParent;
+	} while( el );
 	win = getWindow( doc );
 	return {
-		top: box.top  + ( win.pageYOffset || docElem.scrollTop )  - ( docElem.clientTop  || 0 ),
-		left: box.left + ( win.pageXOffset || docElem.scrollLeft ) - ( docElem.clientLeft || 0 )
+		top: offsetTop  + ( win.pageYOffset || docElem.scrollTop )  - ( docElem.clientTop  || 0 ),
+		left: offsetLeft + ( win.pageXOffset || docElem.scrollLeft ) - ( docElem.clientLeft || 0 )
 	};
 };