driftyco/ionic — pull request #2829 by WingGao (2014-12-30 03:00:15+00:00)
Title: Sometimes the classList will be undefined.

''' file:///android_asset/www/lib/ionic/dist/js/ionic.bundle.js: Line 3115 : Uncaught TypeError: Cannot call method 'contains' of undefined '''
This was the error log in my product.