下述文件位置主要针对Butterfly主题，其他主题请自行修改！！！

教程

  1. 新建[BlogSource]/themes/butterfly/scripts/helpers/inject_elements.js文件：

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    hexo.extend.generator.register('random', function (locals) {
        const config = hexo.config.random || {}
        const posts = []
        for (const post of locals.posts.data) {
            if (post.random !== false) posts.push(post.path)
        }
        return {
            path: config.path || 'random/index.html',
            data: `<html><head><script>var posts=${JSON.stringify(posts)};window.open('/'+posts[Math.floor(Math.random() * posts.length)],"_self")</script></head></html>`
        }
    })

  2. 在你想要的位置引用/random/index.html即可

新版教程

  1. 新建themes/butterfly/scripts/helpers/inject_elements.js

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    hexo.extend.filter.register('after_render:html', function (data) {
        const posts = []
        hexo.locals.get('posts').map(function (post) {
            if (post.random !== false) posts.push(post.path)
        })
        data += `<script>var posts=${JSON.stringify(posts)};function toRandomPost(){ window.pjax ? pjax.loadUrl('/'+posts[Math.floor(Math.random()*posts.length)]) : window.open('/'+posts[Math.floor(Math.random()*posts.length)], "_self"); };</script>`
        return data
    })

  2. 正常调用toRandomPost()函数即可。