Merge pull request #22 from thomasyxy/master

scroll bind has error

Author: ibufu

src/index.js

@@ -89,13 +89,13 @@ export default function install (Vue, options) {
 
   function initScrollSections (el, sectionSelector) {
     const id = scrollSpyId(el)
-    const scrollSpyContext = el[scrollSpyContext]
+    const scrollSpyContextEl = el[scrollSpyContext]
     const idScrollSections = findElements(el, sectionSelector)
     scrollSpySections[id] = idScrollSections
 
     if (idScrollSections[0] && idScrollSections[0].offsetParent !== el) {
-      scrollSpyContext.eventEl = window
-      scrollSpyContext.scrollEl = bodyScrollEl
+      scrollSpyContextEl.eventEl = window
+      scrollSpyContextEl.scrollEl = bodyScrollEl
     }
   }
 
@@ -205,9 +205,9 @@ export default function install (Vue, options) {
       delete currentIndex[id]
     },
     inserted: function (el) {
-      const {eventEl, onScroll, options: {sectionSelector}} = el[scrollSpyContext]
-
+      const {options: {sectionSelector}} = el[scrollSpyContext]
       initScrollSections(el, sectionSelector)
+      const {eventEl, onScroll} = el[scrollSpyContext]
       eventEl.addEventListener('scroll', onScroll)
 
       onScroll()