How to debug javascript on Android with chrome developer tools

@irbull
We have integrated J2V8 into our project, we're very appreciate that you provide so excellent framework for us.
But now we're facing one problem that is how to debug javascript on Android with chrome developer tools.
Therefore we're grateful if you do us favor to provide demo code that how to debug javascript in Android with chrome developer tools.
We have written several thousand javascript code, it's inefficient to solve bug without debug tool.

Thanks lot.