being ssr friendly when accessing dom objectsjo-ssr-friendly

1 files changed, 7 insertions, 6 deletions

diff --git a/js/src/scrollspy.js b/js/src/scrollspy.js
index 6ac00fedd..0bcbaa88e 100644
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@@ -9,7 +9,8 @@ import {
   defineJQueryPlugin,
   getElement,
   getSelectorFromElement,
-  typeCheckConfig
+  typeCheckConfig,
+  getWindow
 } from './util/index'
 import EventHandler from './dom/event-handler'
 import Manipulator from './dom/manipulator'
@@ -67,7 +68,7 @@ const METHOD_POSITION = 'position'
 class ScrollSpy extends BaseComponent {
   constructor(element, config) {
     super(element)
-    this._scrollElement = this._element.tagName === 'BODY' ? window : this._element
+    this._scrollElement = this._element.tagName === 'BODY' ? this._window : this._element
     this._config = this._getConfig(config)
     this._offsets = []
     this._targets = []
@@ -164,14 +165,14 @@ class ScrollSpy extends BaseComponent {
 
   _getScrollHeight() {
     return this._scrollElement.scrollHeight || Math.max(
-      document.body.scrollHeight,
-      document.documentElement.scrollHeight
+      this._document.body.scrollHeight,
+      this._document.documentElement.scrollHeight
     )
   }
 
   _getOffsetHeight() {
     return this._scrollElement === window ?
-      window.innerHeight :
+      this._window.innerHeight :
       this._scrollElement.getBoundingClientRect().height
   }
 
@@ -278,7 +279,7 @@ class ScrollSpy extends BaseComponent {
  * ------------------------------------------------------------------------
  */
 
-EventHandler.on(window, EVENT_LOAD_DATA_API, () => {
+EventHandler.on(getWindow(), EVENT_LOAD_DATA_API, () => {
   SelectorEngine.find(SELECTOR_DATA_SPY)
     .forEach(spy => new ScrollSpy(spy))
 })