Use JSDoc to clear types

[wherewhere]

Issue Checklist

• I am using NexT version 8.0 or later.
• I have already read the Troubleshooting page of Hexo and Troubleshooting page of NexT.
• I have already searched for current issues, which does not help me.

Expected behavior

Use JSDoc to clear types of script and source.

Actual behavior

Types are any now.

Steps to reproduce the behavior

Open a JS script.

Other Information

If JSDoc is allowed to add, I will create a PR to add it.

[welcome]

Thanks for opening this issue, maintainers will get back to you as soon as possible!

[stevenjoezhang]

@wherewhere Thanks, PRs are welcome

[wherewhere]

#963 has change the js source. Need waiting for it be marged.