知乎想法/答案备份, copy 到 console 执行即可

zh_answer.js

//知乎答案爬取
var $ = document.querySelector.bind(document)
var $$ = document.querySelectorAll.bind(document)
var zh={
    Download:function (content, filename) {
        // 创建隐藏的可下载链接
        var eleLink = document.createElement('a');
        eleLink.download = filename;
        eleLink.style.display = 'none';
        // 字符内容转变成blob地址
        var blob = new Blob([content]);
        eleLink.href = URL.createObjectURL(blob);
        // 触发点击
        document.body.appendChild(eleLink);
        eleLink.click();
        // 然后移除
        document.body.removeChild(eleLink);
    },
    get_page(){
        var page=$(".PaginationButton-next") && Number($(".PaginationButton-next").previousElementSibling.innerText);
        return page || 1;
    },
    now_page(){
        return $(".PaginationButton--current") && Number($(".PaginationButton--current").innerText) || 1
    },
    get_item(){
        var re=[];
        $$('.List-item>.AnswerItem').forEach(function(el){
            var item={
                title: el.querySelector('.ContentItem-title').innerText,
                text:el.querySelector('.RichContent-inner').innerText,
                time:el.querySelector(".ContentItem-time").innerText,
            }
            item.time = item.time.replace(/发布于\s+/, '')
            re.push(item);
        })
        return re;
    },
    href(page){
        var url=this.get_url()+"?page="+page;
        location.href=url;
    },
    get_url(){
        var url=location.pathname;
        return "https://www.zhihu.com"+url;
    },
    local(k,v){
        if(!v){
            var item=localStorage.getItem(k);
            if(item&&item!="undefined"){
                // console.log("item",item);
                return JSON.parse(item);
            }else{
                return false;
            }
        }
        localStorage.setItem(k,JSON.stringify(v));
    }
}
function sleep(ms) {
  return new Promise(res=> setTimeout(res, ms))
}
zh.local("answer",[]);
var main=async ()=>{
    if(!location.href.match("answers")){
        alert("请打开知乎答案页面");
        return;
    }
    var total=zh.get_page();
    var now=zh.now_page();
    var data=(now>1&&zh.local("answer"))?zh.local("answer"):[];
    $$('.Button.ContentItem-more').forEach(el=> {
        el.click()
    })
    await sleep(2000)
    function save() {

        let html = data.map(item => `<div>
        <h3>${item.title}</h3>
        <p>${item.text}</p>
        <info>发布于${item.time}</info>
        </div>`).join('')
        zh.Download(html,"answer.html");
        alert("完成");
    }
    if(data.length==0&&now>1){
        save()
        return;
    }
    var tmp=zh.get_item();
    if(tmp){
        tmp.forEach(v=>{
            data.push(v);
        })
    }
    zh.local("answer",data);
    console.log('now', now, 'total', total)

    if(now>=total){
        save()
        return;
    }
    now++;
    $('.PaginationButton-next').click()
    await sleep(3000)
    await main()
}

main();

zh_pin.js

//想法备份
var $ = document.querySelector.bind(document)
var $$ = document.querySelectorAll.bind(document)
var zh={
    Download:function (content, filename) {
        // 创建隐藏的可下载链接
        var eleLink = document.createElement('a');
        eleLink.download = filename;
        eleLink.style.display = 'none';
        // 字符内容转变成blob地址
        var blob = new Blob([content]);
        eleLink.href = URL.createObjectURL(blob);
        // 触发点击
        document.body.appendChild(eleLink);
        eleLink.click();
        // 然后移除
        document.body.removeChild(eleLink);
    },
    get_page(){
        var page=$(".PaginationButton-next") && Number($(".PaginationButton-next").previousElementSibling.innerText);
        return page || 1;
    },
    now_page(){
        return $(".PaginationButton--current") && Number($(".PaginationButton--current").innerText) || 1
    },
    get_item(){
        var re=[];
        $$('.PinItem>.RichContent>.RichContent-inner').forEach(function(el){
            var item={
                text:el.innerText,
                time:el.nextElementSibling.querySelector(".ContentItem-time span").getAttribute('data-tooltip'),
            }
            item.time = item.time.replace(/发布于\s+/, '')
            if (!/^\d{4}-/.test(item.time)) {
                item.time = '2020-' + item.time
            }
            re.push(item);
        })
        return re;
    },
    href(page){
        var url=this.get_url()+"?page="+page;
        location.href=url;
    },
    get_url(){
        var url=location.pathname;
        return "https://www.zhihu.com"+url;
    },
    local(k,v){
        if(!v){
            var item=localStorage.getItem(k);
            if(item&&item!="undefined"){
                // console.log("item",item);
                return JSON.parse(item);
            }else{
                return false;
            }
        }
        localStorage.setItem(k,JSON.stringify(v));
    }
}


zh.local("xiangfa",[]);
var main=()=>{
    if(!location.href.match("pin")){
        alert("请打开知乎想法页面");
        return;
    }
    var total=zh.get_page();
    var now=zh.now_page();
    var data=(now>1&&zh.local("xiangfa"))?zh.local("xiangfa"):[];

    function save() {

        let html = data.map(item => `<div>
        <h3>${item.time}</h3>
        <p>${item.text}</p>
        </div>`).join('')
        zh.Download(html,"xiangfa.html");
        alert("完成");
    }
    if(data.length==0&&now>1){
        save()
        return;
    }
    var tmp=zh.get_item();
    if(tmp){
        tmp.forEach(v=>{
            data.push(v);
        })
    }
    zh.local("xiangfa",data);
    console.log('now', now, 'total', total)

    if(now>=total){
        save()
        return;
    }
    now++;
    $('.PaginationButton-next').click()
    setTimeout(main, 3000)
}

main();