I change the way of implementation,
and add “fastForward" & "rewind" methods
delete "console" code
fix the problem in IE9-
fix problem in IE9-
Thank you for your contribution.
Looking at the diff, your pull request seems to be a complete rewrite of the source code.
Being it as it is, I see no purpose in merging it with my branch. I think it's best to keep it as a fork, which users can see using the Forks button.