Hexo: JS Helper should have the ability to add async/defer/integrity attributes

[caffeinewriter]

Check List

Please check followings before submitting a new feature request.

• [x] I have already read Docs page
• [x] I have already searched existing issues

Feature Request

The default js() helper should ideally have the ability to add attributes like async and defer, which can help significantly with time-to-first-paint. Perhaps to maintain backwards compatibility, take in either a string which maintains current behavior, or an object which could have the attributes as keys.

[curbengh]

Working on it https://github.com/hexojs/hexo/pull/3681 https://github.com/hexojs/hexo/pull/3690

[caffeinewriter]

Thanks! I checked issues, but I didn't think to check PRs. Looking forward to that landing!

[curbengh]

As not to disappoint you, since this feature is not high priority (can always use <script>), most probably it won't be part of v4 release. But I'll try my best to land this in v4.1.

[curbengh]

Btw, in the meantime, you could also consider a custom JS helper with this ability.
Simply add this file into the scripts/ folder, and use <%- addJs({src: '', integrity: ''}) %> (function name is customizable). The only difference is that path name must ends with .js.