From 6a223b2ab3d91dbe80410606376b7165b129a783 Mon Sep 17 00:00:00 2001
From: ice-lord <33343143+ice-lord@users.noreply.github.com>
Date: Fri, 3 Nov 2017 18:17:13 +0800
Subject: [PATCH] Update mui.class.scroll.js
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解决某些情况下wrapper发生原生滚动导致组件无法向上回滚的问题
---
 js/mui.class.scroll.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/js/mui.class.scroll.js b/js/mui.class.scroll.js
index afe11910..e06a4cae 100644
--- a/js/mui.class.scroll.js
+++ b/js/mui.class.scroll.js
@@ -700,7 +700,8 @@
 		},
 		resetPosition: function(time) {
 			var x = this.x,
-				y = this.y;
+				y = this.y,
+				dy = this.wrapper.scrollTop;
 
 			time = time || 0;
 			if (!this.hasHorizontalScroll || this.x > 0) {
@@ -715,6 +716,10 @@
 				y = this.maxScrollY;
 			}
 
+			if(dy > 0){
+				this.wrapper.scrollTop = 0;
+				y -= dy;
+			}
 			if (x == this.x && y == this.y) {
 				return false;
 			}
@@ -935,4 +940,4 @@
 		});
 		return scrollApis.length === 1 ? scrollApis[0] : scrollApis;
 	};
-})(mui, window, document);
\ No newline at end of file
+})(mui, window, document);