问题
I am testing an application on Ipad with the iOS safari v 13.1 (beta). All buttons in the application use "mdl-js-ripple-effect" is not working. there are around 1260+ instances and 400+ file using this class.
回答1:
Look here: https://github.com/google/material-design-lite/issues/5281
... MDL is no longer maintained. Please update your systems as you can to Material Components for Web.
来源：https://stackoverflow.com/questions/57858598/mdl-js-ripple-effect-not-working-on-ipad-ios-safari-13-1beta