FIX: invalid math of scroll percent. #1615

Invalid math of scroll percent when sidebar is bigger than content.
iissnan · Apr 23, 2017 · 3bfb633 · 3bfb633
1 parent 340c984
commit 3bfb633
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/source/js/src/utils.js b/source/js/src/utils.js
@@ -66,7 +66,8 @@ NexT.utils = NexT.$u = {
       var scrollTop = $(window).scrollTop();
       var docHeight = $('#content').height();
       var winHeight = $(window).height();
-      var scrollPercent = (scrollTop) / (docHeight - winHeight);
+      var contentMath = (docHeight > winHeight) ? (docHeight - winHeight) : ($(document).height() - winHeight);
+      var scrollPercent = (scrollTop) / (contentMath);
       var scrollPercentRounded = Math.round(scrollPercent*100);
       var scrollPercentMaxed = (scrollPercentRounded > 100) ? 100 : scrollPercentRounded;
       $('#scrollpercent>span').html(scrollPercentMaxed);