hexo-postscript is an useful tool for adding current post link in hexo post page.
npm install --save hexo-postscript
First add configuration in _config.yml
from your hexo project, support javascript template string.
See Hexo Post Variables
postscript: "> 原文地址:[${post.permalink}](${post.permalink})\n获取最佳阅读体验并参与[讨论](${post.permalink}#comments),请访问原文"
Run hexo command.
$ hexo clean && hexo g
MIT