支持scroll-anchoring #43

Author: cunjinli

src/recycle-view.wxml

@@ -1,6 +1,6 @@
 <!--components/recycle-view/recycle-view.wxml-->
 <view bindtouchstart='_beginToScroll' style="height:{{useInPage ? totalHeight : height}}px;width:{{width}}px;transform:translateZ(0);-webkit-transform:translateZ(0);" id="content" class="wrap">
-  <scroll-view bindscroll="_scrollViewDidScroll" class="content" style='height:100%;position: relative;' scroll-y="{{useInPage ? false : scrollY}}" scroll-x="{{false}}" upper-threshold="{{upperThreshold}}" lower-threshold="{{lowerThreshold}}" scroll-top="{{innerScrollTop}}" scroll-into-view="{{innerScrollIntoView}}" scroll-with-animation="{{scrollWithAnimation}}" bindscrolltoupper="_scrollToUpper" bindscrolltolower="_scrollToLower" enable-back-to-top="{{enableBackToTop}}" throttle="{{throttle}}">
+  <scroll-view bindscroll="_scrollViewDidScroll" class="content" style='height:100%;position: relative;' scroll-y="{{useInPage ? false : scrollY}}" scroll-x="{{false}}" upper-threshold="{{upperThreshold}}" lower-threshold="{{lowerThreshold}}" scroll-top="{{innerScrollTop}}" scroll-into-view="{{innerScrollIntoView}}" scroll-with-animation="{{scrollWithAnimation}}" bindscrolltoupper="_scrollToUpper" bindscrolltolower="_scrollToLower" scroll-anchoring enable-back-to-top="{{enableBackToTop}}" throttle="{{throttle}}">
     <view style="position: absolute;z-index:1;width:100%;left: 0;top: 0;opacity: 0;visibility: hidden;">
       <slot name="itemsize"></slot>
     </view>