viljamis/ResponsiveSlides.js — pull request #319 by gucong3000 (2014-11-04 03:17:37+00:00)
Title:  If no options set, JS error #300 

If you don't set any options at all (and accept all defaults) when initialising the slider, you get a javascript error on line 315 (cannot get property "navContainer" of undefined).

This is caused by the fact that you're not checking if options is set in all the instances where you try to access a property on it.