fix(event): has no effect on a FF mobile browser, fixed #67

CHANGELOG.md

@@ -1,8 +1,15 @@
 ## 2.3.0
 
 > 2017-02-11
+
+### Features
+
 - feat(src): add alias feature
 
+### Bug fixes
+- fix(event): `auto2top` has no effect on a FF mobile browser, fixed #67
+
+
 ## 2.2.1
 
 > 2017-02-11

src/event.js

@@ -135,8 +135,10 @@ export function bindToggle (dom) {
   }
 }
 
+const scrollingElement = document.scrollingElement || document.documentElement
+
 export function scroll2Top (offset = 0) {
-  document.body.scrollTop = offset === true ? 0 : Number(offset)
+  scrollingElement.scrollTop = offset === true ? 0 : Number(offset)
 }
 
 export function sticky () {