本文参考自heo及Jayhrn

创建文件

创建themes/butterfly/scripts/helpers/random.js文件

开启pjax方案

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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 || 'bywind/random.js',
        data: `var posts=${JSON.stringify(posts)};function toRandomPost(){pjax.loadUrl('/'+posts[Math.floor(Math.random() * posts.length)]);};`
    }
})

未开启pjax方案

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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 || 'bywind/random.js',
        data: `var posts=${JSON.stringify(posts)};function toRandomPost(){window.open('/'+posts[Math.floor(Math.random() * posts.length)],"_self");};`
    }
})

添加配置

在主题配置文件的inject的bottom里添加

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<script src="/bywind/random.js"></script>