Bootstrap tour won't pause

问题

I am using this for reference.

In my code I have all input fields.

1. I want to do is, if that input field is empty, then user should not be able to move or goto next step.

I am searching desperately for this but not getting any documentation.

Any Suggestion or reference or example please?

来源：https://stackoverflow.com/questions/24382873/bootstrap-tour-wont-pause