为掘金小册添加目录

左键点击Tampermonkey, 出来如图所示选项

号

第三步

粘贴如下代码到编辑区

// ==UserScript==
// @name         掘金小册目录
// @description:zh-cn 自动生成掘金小册目录
// @namespace    https://juejin.im/book/*
// @version      1.0
// @description  create content
// @author       Simon
// @match        https://juejin.im/book/*
// @require      https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js
// @grant        none
// ==/UserScript==
var menuIndex = 0;

(function() {
    'use strict';
    init();
})();

function init() {
    var a = setInterval(() => {
        var content = document.getElementsByClassName('article-content');
        if(content){
            window.clearInterval(a);
            initSidebar();
        }
    }, 1000);
}

function initSidebar() {

    let titles = $('.article-content').find('h1,h2,h3,h4,h5,h6');
    console.log(titles.length)
    if(titles.length === 0){
        return;
    }

    
    let contentHeight = window.innerHeight;
    let asideContent = '<aside id="sideMenu" style="position: fixed;padding: 0px 15px 20px 0px;top: 0;right: 0;margin-bottom:20px;background-color: #eee;background-color: #eee;z-index: 810;overflow: scroll;max-height:'+contentHeight+'px;min-height:'+contentHeight+'px;min-width:200px;max-width:300px;"><h2 style="padding-left:30px">目录<h2></aside>';
    $('.book-content').prepend(asideContent);
    $('#sideMenu').append('<ol id="menu_nav_ol" style="list-style:none;margin:0px;padding:0px;">');
    
    titles.each(function(){
          let tagName = $(this)[0].tagName.toLocaleLowerCase();
          let content = $(this).text();
          
          let newTagId =$(this).attr('id');
          if(!$(this).attr('id')){
              newTagId = 'id_'+menuIndex;
              $(this).attr('id',newTagId);
              menuIndex++;
          }
          if(newTagId !=='id_0')
              appendMenuItem(tagName,newTagId,content);
    });

    $('#sideMenu').append('</ol>');
    
    $('#menu_nav_ol li').on('click',function(){
        let targetId = $(this).attr('class');
        $(this).first().children("a").first().css('color', 'red');
        $("#"+targetId)[0].scrollIntoView({behavior: "instant", block: "center", inline: "nearest"});
        $('#menu_nav_ol').children().each(function(){
            let otherId = $(this).attr('class');
            if (targetId != otherId) {
                 $(this).first().children("a").first().css('color', 'black');
            }
        });
    });
}

function appendMenuItem(tagName,id,content){
    let paddingLeft = tagName.substring(1) * 20;
    $('#menu_nav_ol').append('<li class="' + id +'" style="padding-left: '+ paddingLeft +'px;margin:10px 0"><a style="color:black;font-weight:bold">' + content + '</a></li>');
}
复制代码

然后点击 文件 => 保存

再次刷新即可, 效果如下:

最后

• 有时候刷新一次出不来目录就多刷几次
• 切换章节后, 如需显示当前章节目录, 仍然需要刷新