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知乎手机网页版改进

使手机网页版可以加载更多答案

当前为 2020-08-03 提交的版本，查看 最新版本。

// ==UserScript==
// @name        知乎手机网页版改进
// @namespace   https://www.zhihu.com/
// @match       https://www.zhihu.com/question/*
// @grant       none
// @version     1.2.1
// @author      nameldk
// @description 使手机网页版可以加载更多答案
// @note        2020.08.03  v1.2.1 处理评论加载不完全,评论作者标识,收起按钮颜色区分,一些样式调整
// @note        2020.08.02  v1.2 处理gif,视频,收起后的定位,发布时间,页面被清空的问题
// ==/UserScript==

const questionNumber = (location.href.match(/\/question\/(\d+)/)||[])[1];
const inDetailPage = location.href.match(/\/question\/\d+\/answer\/\d+/);
const fromMobile = navigator.userAgent.match(/Android|iPhone|iPad|iPod|Opera Mini|IEMobile/i);

var offset = 0;
var limit = 5;
var is_end = 0;
var elList = null;
var elLoading = null;
var loadAnswerInterval = null;
var loadCommentInterval = null;
var viewportElCheckList = [];


function forEachArray(arrayLike, cb) {
    if (arrayLike) {
        Array.prototype.forEach.call(arrayLike, el => cb(el));
    }
}

function forEachBySelector(s, cb) {
    Array.prototype.forEach.call(document.querySelectorAll(s), el => cb(el));
}

function removeBySelector(s) {
    forEachBySelector(s, ele => ele.remove());
}


function getElementHeight(el) {
    if (el) {
        // el.offsetHeight
        return parseFloat(window.getComputedStyle(el, null).height.replace("px", ""));
    }
    return 0;
}

function isElementInViewport (el) {
    // https://stackoverflow.com/questions/123999/how-can-i-tell-if-a-dom-element-is-visible-in-the-current-viewport
    if (!el)
        return false;

    var rect = el.getBoundingClientRect();
    if (rect.top >= 0) { // ↓
        return rect.top < window.innerHeight;
    } else {
        return rect.top + rect.height > 0;
    }
}


function formatNumber(num) {
    if (num > 10000) {
        return (num / 10000).toFixed(2) + '万';
    } else {
        return num;
    }
}


function formatUrl(url, formatStr) {
    if (!formatStr)
        formatStr = 'xs';
    // s,xs,m, r
    return url.replace('{size}', formatStr);
}

function formatDate(e, t) {
    if(e.toString().length === 10) { // 秒
        e = e*1000;
    }
    e = new Date(e);
    // yyyy-MM-dd hh:mm:ss
    var n = {
        "M+": e.getMonth() + 1,
        "d+": e.getDate(),
        "h+": e.getHours(),
        "m+": e.getMinutes(),
        "s+": e.getSeconds(),
        "q+": Math.floor((e.getMonth() + 3) / 3),
        S: e.getMilliseconds()
    };
    /(y+)/.test(t) && (t = t.replace(RegExp.$1, (e.getFullYear() + "").substr(4 - RegExp.$1.length)));
    for (var r in n)
        new RegExp("(" + r + ")").test(t) && (t = t.replace(RegExp.$1, 1 === RegExp.$1.length ? n[r] : ("00" + n[r]).substr(("" + n[r]).length)));
    return t
}

function getDate(timestamp) {
    return formatDate(timestamp, 'yyyy-MM-dd');
}

// ---biz---

function skipOpenApp() {
    // .ContentItem.AnswerItem
    // .RichContent.is-collapsed.RichContent--unescapable
    Array.prototype.forEach.call(document.querySelectorAll('.ContentItem.AnswerItem'), function (ele) {
        let elRichContentInner = ele.querySelector('.RichContent-inner');
        let button = ele.querySelector('button');

        if (button) {
            button.style.display = 'none';
        }
        if (elRichContentInner) {
            let elMTimeMeta = ele.querySelector('meta[itemprop="dateModified"]');
            let elCTimeMeta = ele.querySelector('meta[itemprop="dateCreated"]');

            if (elMTimeMeta && elCTimeMeta) {
                let mTime = elMTimeMeta.getAttribute('content').toString().split('T')[0];
                let cTime = elCTimeMeta.getAttribute('content').toString().split('T')[0];
                let elATime = elRichContentInner.parentElement.querySelector('.ContentItem-time');
                let url = elCTimeMeta.previousElementSibling.getAttribute('content');
                let mHtml = '';

                if (mTime !== cTime) {
                    mHtml = `<span class="my-updated-time">编辑于 ${mTime}</span>`;
                }
                let tmpHtml = `<div>
            <div class="ContentItem-time">
                <a target="_blank" href="${url}">
                    <span>发布于 ${cTime}</span>${mHtml}
                </a>
            </div>
            </div>`;
                if (elATime) {
                    elATime.remove();
                }
                elRichContentInner.insertAdjacentHTML('afterend', tmpHtml);
            }

            if (elRichContentInner.parentElement.classList.contains('is-collapsed')) {
                ele.classList.add('my-fold');
                elRichContentInner.insertAdjacentHTML('afterend', `<span class="my-more-btn">↓展开↓</span><span class="my-less-btn">↑收起↑</span>`);
                elRichContentInner.parentElement.classList.remove('is-collapsed');
                elRichContentInner.setAttribute("style", "");
                processFold(elRichContentInner.parentElement);
            }

            forEachArray(elRichContentInner.querySelectorAll('.GifPlayer'), el => {
                el.addEventListener('click', () => {
                    let elImg = el.querySelector('img'),
                        elIcon = el.querySelector('svg'),
                        url = elImg.getAttribute('src').toString().replace('.jpg', '.webp');
                    if (elIcon) {
                        elImg.setAttribute('src', url);
                        elIcon.remove();
                    }
                });
            });

        }


        ele.addEventListener("click", function (event) {
            event.preventDefault();
            event.stopPropagation();
            if (elRichContentInner) {
                elRichContentInner.setAttribute("style", "");
            }
        });

        bindClickComment(ele.parentElement);
    });

    document.body.style.overflow = "auto";
}

function removeAds() {
    Array.prototype.forEach.call(document.querySelectorAll('.MBannerAd'), function (ele) {
        ele.parentNode.removeChild(ele)
    });
}

function removeBlock() {
    removeBySelector('.MobileModal-backdrop');
    removeBySelector('.MobileModal--plain.ConfirmModal');
    removeBySelector('.AdBelowMoreAnswers');
    removeBySelector('div.Card.HotQuestions');
    removeBySelector('button.OpenInAppButton.OpenInApp');

    let counter = 3;
    let interval = null;
    interval = setInterval(function () {
        forEachBySelector('iframe', ele => {
            if (ele.getAttribute('src').indexOf('https://www.zhihu.com/') !== 0) {
                ele.remove();
            }
        });
        counter--;
        if (counter < 0) {
            clearInterval(interval);
        }
    }, 1000);
}


function processContent(content) {
    if (!content)
        return '';
    var r = /<img src="data:image.+?"(.+?)data-actualsrc="(.+?)"\/>/g;
    return content.replace(r, '<img src="$2"$1/>');
}

function loadContent(offset, limit) {
    var url = `https://www.zhihu.com/api/v4/questions/${questionNumber}/answers?include=data%5B%2A%5D.is_normal%2Cadmin_closed_comment%2Creward_info%2Cis_collapsed%2Cannotation_action%2Cannotation_detail%2Ccollapse_reason%2Cis_sticky%2Ccollapsed_by%2Csuggest_edit%2Ccomment_count%2Ccan_comment%2Ccontent%2Ceditable_content%2Cvoteup_count%2Creshipment_settings%2Ccomment_permission%2Ccreated_time%2Cupdated_time%2Creview_info%2Crelevant_info%2Cquestion%2Cexcerpt%2Crelationship.is_authorized%2Cis_author%2Cvoting%2Cis_thanked%2Cis_nothelp%2Cis_labeled%2Cis_recognized%2Cpaid_info%2Cpaid_info_content%3Bdata%5B%2A%5D.mark_infos%5B%2A%5D.url%3Bdata%5B%2A%5D.author.follower_count%2Cbadge%5B%2A%5D.topics&limit=${limit}&offset=${offset}&platform=desktop&sort_by=default`;
    return fetch(url).then(response => response.json());
}

function genAnswerItemHtml(data) {
    var content = processContent(data.content);
    let upTimeHtml = '';
    if (getDate(data.created_time) !== getDate(data.updated_time)) {
        upTimeHtml = `<span class="my-updated-time">编辑于 ${formatDate(data.updated_time, 'yyyy-MM-dd')}</span>`;
    }

    var html = `<div class="List-item" tabindex="0" id="answer-${data.id}">
    <div class="ContentItem AnswerItem my-fold" data-za-index="0">
        <div class="ContentItem-meta">
            <div class="AuthorInfo AnswerItem-authorInfo AnswerItem-authorInfo--related" itemprop="author" itemscope=""
                 itemtype="http://schema.org/Person">
                <span class="UserLink AuthorInfo-avatarWrapper">
                    <a class="UserLink-link"
                       target="_blank"
                       href="//www.zhihu.com/people/${data.author.url_token}">
                        <img class="Avatar AuthorInfo-avatar" width="38" height="38"
                             src="${data.author.avatar_url_template}"
                             alt="">
                    </a>
                </span>
                <div class="AuthorInfo-content">
                    <div class="AuthorInfo-head">
                        <span class="UserLink AuthorInfo-name">
                        <a class="UserLink-link"
                           target="_blank"
                           href="//www.zhihu.com/people/${data.author.url_token}">${data.author.name}</a>
                        </span>
                    </div>
                    <div class="AuthorInfo-detail">
                        <div class="AuthorInfo-badge">
                            <div class="ztext AuthorInfo-badgeText">${data.author.headline}</div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        <meta itemprop="image">
        <meta itemprop="upvoteCount" content="${data.voteup_count}">
        <meta itemprop="url" content="https://www.zhihu.com/question/${questionNumber}/answer/${data.id}">
        <meta itemprop="dateCreated" content="${formatDate(data.created_time, 'yyyy-MM-ddThh:mm:ss')}.000Z">
        <meta itemprop="dateModified" content="${formatDate(data.updated_time, 'yyyy-MM-ddThh:mm:ss')}.000Z">
        <meta itemprop="commentCount" content="${data.comment_count}">
        <div class="RichContent RichContent--unescapable">
            <div class="RichContent-inner RichContent-inner--collapsed">
                <span class="RichText ztext CopyrightRichText-richText" itemprop="text">
                ${content}
                </span>
            </div>
            <div>
            <div class="ContentItem-time">
                <a target="_blank" href="//www.zhihu.com/question/${questionNumber}/answer/${data.id}">
                    <span>发布于 ${formatDate(data.created_time, 'yyyy-MM-dd')}</span>${upTimeHtml}
                </a>
            </div>
            </div>

            <span class="my-more-btn">↓展开↓</span>
            <span class="my-less-btn">↑收起↑</span>

            <div class="ContentItem-actions">
                <span>
                    <button aria-label="赞同 ${formatNumber(data.voteup_count)}" type="button" class="Button VoteButton VoteButton--up">
                        <span style="display: inline-flex; align-items: center;">&#8203;
                            <svg class="Zi Zi--TriangleUp VoteButton-TriangleUp" fill="currentColor" viewBox="0 0 24 24"
                                 width="10" height="10">
                            <path d="M2 18.242c0-.326.088-.532.237-.896l7.98-13.203C10.572 3.57 11.086 3 12 3c.915 0 1.429.571 1.784 1.143l7.98 13.203c.15.364.236.57.236.896 0 1.386-.875 1.9-1.955 1.9H3.955c-1.08 0-1.955-.517-1.955-1.9z"
                                  fill-rule="evenodd"></path></svg>
                        </span>赞同 ${formatNumber(data.voteup_count)}
                    </button>
                    <button aria-label="反对" type="button"
                            class="Button VoteButton VoteButton--down VoteButton--mobileDown">
                        <span style="display: inline-flex; align-items: center;">&#8203;
                        <svg class="Zi Zi--TriangleDown" fill="currentColor" viewBox="0 0 24 24" width="10" height="10"><path
                                d="M20.044 3H3.956C2.876 3 2 3.517 2 4.9c0 .326.087.533.236.896L10.216 19c.355.571.87 1.143 1.784 1.143s1.429-.572 1.784-1.143l7.98-13.204c.149-.363.236-.57.236-.896 0-1.386-.876-1.9-1.956-1.9z"
                                fill-rule="evenodd"></path></svg>
                    </span>
                    </button>
                </span>
                <button type="button"
                        class="Button ContentItem-action Button--plain Button--withIcon Button--withLabel"><span
                        style="display: inline-flex; align-items: center;">&#8203;<svg class="Zi Zi--Comment Button-zi"
                                                                                       fill="currentColor"
                                                                                       viewBox="0 0 24 24" width="1.2em"
                                                                                       height="1.2em"><path
                        d="M10.241 19.313a.97.97 0 0 0-.77.2 7.908 7.908 0 0 1-3.772 1.482.409.409 0 0 1-.38-.637 5.825 5.825 0 0 0 1.11-2.237.605.605 0 0 0-.227-.59A7.935 7.935 0 0 1 3 11.25C3 6.7 7.03 3 12 3s9 3.7 9 8.25-4.373 9.108-10.759 8.063z"
                        fill-rule="evenodd"></path></svg></span>评论 ${formatNumber(data.comment_count)}
                </button>
                <button type="button" class="Button ContentItem-action Button--plain Button--withIcon Button--iconOnly">
                    <span style="display: inline-flex; align-items: center;">&#8203;<svg class="Zi Zi--Star Button-zi"
                                                                                         fill="currentColor"
                                                                                         viewBox="0 0 24 24"
                                                                                         width="1.2em" height="1.2em"><path
                            d="M5.515 19.64l.918-5.355-3.89-3.792c-.926-.902-.639-1.784.64-1.97L8.56 7.74l2.404-4.871c.572-1.16 1.5-1.16 2.072 0L15.44 7.74l5.377.782c1.28.186 1.566 1.068.64 1.97l-3.89 3.793.918 5.354c.219 1.274-.532 1.82-1.676 1.218L12 18.33l-4.808 2.528c-1.145.602-1.896.056-1.677-1.218z"
                            fill-rule="evenodd"></path></svg></span></button>
            </div>
        </div>
    </div>
</div>`;
    return html;
}


function genVideoHtml(videoId) {
    if (!videoId)
        return '';

    var html = `<div class="RichText-video" data-za-detail-view-path-module="VideoItem" data-za-extra-module="{&quot;card&quot;:{&quot;content&quot;:{&quot;type&quot;:&quot;Video&quot;,&quot;sub_type&quot;:&quot;SelfHosted&quot;,&quot;video_id&quot;:&quot;${videoId}&quot;,&quot;is_playable&quot;:true}}}">
    <div class="VideoCard VideoCard--interactive VideoCard--mobile">
        <div class="VideoCard-layout">
            <div class="VideoCard-video">
                <div class="VideoCard-video-content">
                    <div class="VideoCard-player"><iframe frameborder="0" allowfullscreen="" src="https://www.zhihu.com/video/${videoId}?autoplay=false&amp;useMSE="></iframe></div>
                </div>
            </div>
        </div>
        <div class="VideoCard-mask"></div>
    </div>
</div>
`;
    return html;
}

function processVideo(elAncestor) {
    if (elAncestor) {
        forEachArray(elAncestor.querySelectorAll('a.video-box'), el => {
            let videoId = el.dataset.lensId;
            if (videoId) {
                let html = genVideoHtml(videoId);
                let div = document.createElement('div');
                div.innerHTML = html;
                el.insertAdjacentElement('afterend', div);
                el.parentElement.removeChild(el);
            }
        });
    }
}

function getListWrap() {
    if (!elList) {
        elList = document.querySelectorAll('.Question-main .List');
        if (elList)
            elList = elList[elList.length - 1];
    }
    return elList;
}

function loadAnswer() {
    if (is_end) {
        return;
    }
    if (elLoading) {
        elLoading.classList.remove('hide');
    }
    loadContent(offset, limit).then(function (data) {
        if (elLoading) {
            elLoading.classList.add('hide');
        }
        console.log('get data:', offset, limit);
        if (data.paging.is_end) {
            is_end = 1;
        }
        offset += data.data.length;
        let elListWrap = getListWrap();
        if (elListWrap) {
            data.data.forEach(function (item) {
                let elListItemWrap = document.createElement('div');
                elListItemWrap.innerHTML = genAnswerItemHtml(item);
                elListWrap.insertAdjacentElement("beforeend", elListItemWrap);
                processFold(elListItemWrap.querySelector('.RichContent'));
                bindClickComment(elListItemWrap);
                processAHref(elListItemWrap);
                processVideo(elListItemWrap);
            });
            if (is_end) {
                let html = '<div style="text-align: center; padding: 10px;">全部回答已加载完成...</div>'
                elListWrap.insertAdjacentHTML("beforeend", html);
            }
        } else {
            console.warn('elListWrap empty');
        }
    })
}


function addViewportCheckList(elListItem) {
    if (elListItem) {
        viewportElCheckList.push(elListItem);
    }
}

function removeViewportCheckList(elListItem) {
    viewportElCheckList.forEach(function (v, i) {
        if (v === elListItem) {
            viewportElCheckList.splice(i, 1);
        }
    })
}

function processFold(elRichContent) {
    var elMoreBtn = elRichContent.querySelector('.my-more-btn');
    var elLessBtn = elRichContent.querySelector('.my-less-btn');
    var elContentItem = elLessBtn.closest('.ContentItem');
    if (elMoreBtn && elLessBtn && elContentItem) {
        let height = getElementHeight(elRichContent);
        if (height > 0 && height < 400 && elRichContent.querySelectorAll('img').length < 2) {
            elContentItem.classList.remove('my-fold');
            elMoreBtn.remove();
            elLessBtn.remove();
        } else {
            elMoreBtn.addEventListener('click', function (e) {
                elContentItem.classList.add('my-unfold');
                elContentItem.classList.remove('my-fold');
                addViewportCheckList(elContentItem);
            });
            elLessBtn.addEventListener('click', function (e) {
                elContentItem.classList.add('my-fold');
                elContentItem.classList.remove('my-unfold');

                removeViewportCheckList(elContentItem);
                window.scrollTo(0, elContentItem.closest('.List-item').offsetTop);
            });
        }
    }
}

function bindLoadData() {
    var el = document.querySelector('div.Card.ViewAllInappCard');
    if (inDetailPage) {
        el.style.textAlign = "center";
        el.innerHTML = '<a style="padding: 10px;" href="'+location.href.replace(/\/answer.+/,'')+'">查看所有回答<a>';
        return;
    }
    el.insertAdjacentHTML('beforebegin', `<div id="my-loading" class="hide"><div class="loadingio-spinner-dual-ring-41hxycfuw5t"><div class="ldio-4crll70kj">
<div></div><div><div></div></div>
</div></div></div>`);

    elLoading = document.getElementById('my-loading');
    window.onscroll = function() {
        if (is_end) {
            return;
        }
        if ((window.innerHeight + window.scrollY + 50) >= document.body.offsetHeight) {
            console.log('reach bottom');
            if (loadAnswerInterval) {
                clearTimeout(loadAnswerInterval);
            }

            loadAnswerInterval = setTimeout(function(){
                console.log('to load', offset, limit);
                loadAnswer();
            }, 100);
        }
    };
}

function bindProcessViewport() {
    var interval;
    document.addEventListener('scroll', function () {
        if (interval) {
            clearTimeout(interval);
        }
        interval = setTimeout(function () {
            // console.log('scroll-view:', viewportElCheckList.length);
            if (viewportElCheckList.length) {
                viewportElCheckList.forEach(function (elListItem) {
                    var elLessBtn = elListItem.querySelector('.my-less-btn');
                    if (isElementInViewport(elListItem)) {
                        elLessBtn.classList.remove('hide');
                    } else {
                        elLessBtn.classList.add('hide');
                    }
                });
            }
        }, 100);
    }, false);
}

function loadCommentData(answerId, offset, isReverse) {
    if (!answerId) {
        return;
    }
    let url = `https://www.zhihu.com/api/v4/answers/${answerId}/root_comments?limit=10&offset=${offset}&order=normal&status=open`;
    if (isReverse)
        url = `https://www.zhihu.com/api/v4/answers/${answerId}/comments?limit=10&offset=${offset}&order=reverse&status=open`;
    return fetch(url).then(response => response.json());
}

function bindClickComment(elListItem) {
    if (!elListItem)
        return;
    let elButton = elListItem.querySelector('button.ContentItem-action.Button--withLabel');
    let elComment = elListItem.querySelector('.Comments-container');
    elButton.addEventListener('click', function () {
        if (elComment) {
            elComment.classList.toggle('hide');
        } else {
            let answerId = (elListItem.querySelector('.ContentItem-meta ~ meta[itemprop="url"]').getAttribute('content').match(/\/answer\/(\d+)/) || [])[1];
            elComment = addCommentWrap(elListItem, answerId);

            let elCommentWrap = elComment.querySelector('.CommentListV2');
            let elSwitchBtn = elComment.querySelector('div.Topbar-options > button');
            let elCommentFold = elComment.querySelector('a.comment-fold');

            elComment.dataset.answerId = answerId;
            elComment.dataset.offset = 0;

            processComment(elComment, elCommentWrap);

            elCommentWrap.addEventListener('scroll', function(){
                if (elCommentWrap.scrollTop + elCommentWrap.offsetHeight + 20 > elCommentWrap.scrollHeight) {
                    processComment(elComment, elCommentWrap);
                }
            }, false);

            elSwitchBtn.addEventListener('click', function(){
                if (elSwitchBtn.innerText === '切换为时间排序') {
                    elSwitchBtn.innerText = '切换为默认排序';
                    elComment.dataset.isReverse = 0;
                } else {
                    elSwitchBtn.innerText = '切换为时间排序';
                    elComment.dataset.isReverse = 1;
                }
                elComment.dataset.offset = 0;
                elCommentWrap.innerHTML = '';
                processComment(elComment, elCommentWrap);
            });

            elCommentFold.addEventListener('click', function(){
                elComment.classList.add('hide');
            });

        }
    });
}

function addCommentWrap(elListItem, answerId) {
    if (!elListItem)
        return;
    var commentCount = elListItem.querySelector('meta[itemprop="commentCount"]').getAttribute('content');
    let html = `<div class="Comments-container" id="comment-block-${answerId}">
    <div class="CommentsV2 CommentsV2--withEditor">
        <div class="Topbar CommentTopbar">
            <div class="Topbar-title"><h2 class="CommentTopbar-title">${commentCount} 条评论</h2></div>
            <div class="Topbar-options">
                <button type="button" class="Button Button--plain Button--withIcon Button--withLabel">
                    <span style="display: inline-flex; align-items: center;">&#8203;
                        <svg class="Zi Zi--Switch Button-zi" fill="currentColor" viewBox="0 0 24 24" width="1.2em" height="1.2em">
                            <path d="M13.004 7V4.232c0-.405.35-.733.781-.733.183 0 .36.06.501.17l6.437 5.033c.331.26.376.722.1 1.033a.803.803 0 0 1-.601.264H2.75a.75.75 0 0 1-.75-.75V7.75A.75.75 0 0 1 2.75 7h10.254zm-1.997 9.999v2.768c0 .405-.35.733-.782.733a.814.814 0 0 1-.5-.17l-6.437-5.034a.702.702 0 0 1-.1-1.032.803.803 0 0 1 .6-.264H21.25a.75.75 0 0 1 .75.75v1.499a.75.75 0 0 1-.75.75H11.007z" fill-rule="evenodd"></path></svg>
                    </span>切换为时间排序
                </button>
            </div>
        </div>
        <a class="comment-fold">收起</a>
        <div class="CommentListV2">
        </div>
    </div>
</div>`;
    elListItem.insertAdjacentHTML("beforeend", html);
    return elListItem.querySelector('.Comments-container');
}

function genCommentHtml(dataList) {
    if (!dataList || !dataList.length)
        return '';
    let html = '';
    dataList.forEach(function(data) {
        html += genCommentItemHtml(data, data.child_comment_count, 0);
        if (data.child_comment_count) {
            data.child_comments.forEach(function (v) {
                html += genCommentItemHtml(v, 0, 1);
            })
        }
    });
    if (html) {
        return `<ul class="NestComment">${html}</ul>`;
    }
    return html;
}


function genCommentItemHtml(item, hasChild, isChild) {
    const liClass = !hasChild ? 'rootCommentNoChild' : (isChild ? 'child' : 'rootComment');

    var replyHtml = '';
    if (item.reply_to_author) {
        if (item.author && item.author.role === 'author') {
            replyHtml += `<span class="CommentItemV2-roleInfo"> (作者) </span>`; 
        }
        replyHtml += `
<span class="CommentItemV2-reply">回复</span>
<span class="UserLink">
    <a class="UserLink-link" data-za-detail-view-element_name="User" target="_blank"
    href="//www.zhihu.com/people/${item.reply_to_author.member.url_token}">${item.reply_to_author.member.name}</a>
</span>`;
    }
    var html = `<li class="NestComment--${liClass}">
        <div class="CommentItemV2">
            <div>
                <div class="CommentItemV2-meta">
                    <span class="UserLink CommentItemV2-avatar">
                        <a class="UserLink-link" data-za-detail-view-element_name="User" target="_blank"
                           href="//www.zhihu.com/people/${item.author.member.url_token}">
                            <img class="Avatar UserLink-avatar"
                                 width="24" height="24"
                                 src="${formatUrl(item.author.member.avatar_url_template, 's')}"
                                 srcset="${formatUrl(item.author.member.avatar_url_template, 'xs')} 2x"
                                 alt="${item.author.member.name}">
                        </a>
                    </span>
                    <span class="UserLink">
                        <a class="UserLink-link" data-za-detail-view-element_name="User"
                           target="_blank" href="//www.zhihu.com/people/${item.author.member.url_token}">${item.author.member.name}
                        </a>
                    </span>${replyHtml}
                    <span class="CommentItemV2-time">${getDate(item.created_time)}</span>
                </div>
                <div class="CommentItemV2-metaSibling">
                    <div class="CommentRichText CommentItemV2-content">
                        <div class="RichText ztext">${item.content}</div>
                    </div>
                    <div class="CommentItemV2-footer">
                        <button type="button" class="Button CommentItemV2-likeBtn Button--plain"><span
                                style="display: inline-flex; align-items: center;">&#8203;<svg
                                class="Zi Zi--Like" fill="currentColor" viewBox="0 0 24 24" width="16"
                                height="16" style="margin-right: 5px;"><path
                                d="M14.445 9h5.387s2.997.154 1.95 3.669c-.168.51-2.346 6.911-2.346 6.911s-.763 1.416-2.86 1.416H8.989c-1.498 0-2.005-.896-1.989-2v-7.998c0-.987.336-2.032 1.114-2.639 4.45-3.773 3.436-4.597 4.45-5.83.985-1.13 3.2-.5 3.037 2.362C15.201 7.397 14.445 9 14.445 9zM3 9h2a1 1 0 0 1 1 1v10a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V10a1 1 0 0 1 1-1z"
                                fill-rule="evenodd"></path></svg></span>${item.vote_count}
                        </button>
                        <!--<button type="button" class="Button CommentItemV2-hoverBtn Button--plain"><span
                                style="display: inline-flex; align-items: center;">&#8203;<svg
                                class="Zi Zi--Reply" fill="currentColor" viewBox="0 0 24 24" width="16"
                                height="16" style="margin-right: 5px;"><path
                                d="M22.959 17.22c-1.686-3.552-5.128-8.062-11.636-8.65-.539-.053-1.376-.436-1.376-1.561V4.678c0-.521-.635-.915-1.116-.521L1.469 10.67a1.506 1.506 0 0 0-.1 2.08s6.99 6.818 7.443 7.114c.453.295 1.136.124 1.135-.501V17a1.525 1.525 0 0 1 1.532-1.466c1.186-.139 7.597-.077 10.33 2.396 0 0 .396.257.536.257.892 0 .614-.967.614-.967z"
                                fill-rule="evenodd"></path></svg></span>回复
                        </button>
                        <button type="button" class="Button CommentItemV2-hoverBtn Button--plain"><span
                                style="display: inline-flex; align-items: center;">&#8203;<svg
                                class="Zi Zi--Like" fill="currentColor" viewBox="0 0 24 24" width="16"
                                height="16" style="transform: rotate(180deg); margin-right: 5px;"><path
                                d="M14.445 9h5.387s2.997.154 1.95 3.669c-.168.51-2.346 6.911-2.346 6.911s-.763 1.416-2.86 1.416H8.989c-1.498 0-2.005-.896-1.989-2v-7.998c0-.987.336-2.032 1.114-2.639 4.45-3.773 3.436-4.597 4.45-5.83.985-1.13 3.2-.5 3.037 2.362C15.201 7.397 14.445 9 14.445 9zM3 9h2a1 1 0 0 1 1 1v10a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V10a1 1 0 0 1 1-1z"
                                fill-rule="evenodd"></path></svg></span>踩
                        </button>
                        <button type="button" class="Button CommentItemV2-hoverBtn Button--plain"><span
                                style="display: inline-flex; align-items: center;">&#8203;<svg
                                class="Zi Zi--Report" fill="currentColor" viewBox="0 0 24 24" width="16"
                                height="16" style="margin-right: 5px;"><path
                                d="M19.947 3.129c-.633.136-3.927.639-5.697.385-3.133-.45-4.776-2.54-9.949-.888-.997.413-1.277 1.038-1.277 2.019L3 20.808c0 .3.101.54.304.718a.97.97 0 0 0 .73.304c.275 0 .519-.102.73-.304.202-.179.304-.418.304-.718v-6.58c4.533-1.235 8.047.668 8.562.864 2.343.893 5.542.008 6.774-.657.397-.178.596-.474.596-.887V3.964c0-.599-.42-.972-1.053-.835z"
                                fill-rule="evenodd"></path></svg></span>举报
                        </button>-->
                    </div>
                </div>
            </div>
        </div>
    </li>`;
    return html;
}

function genCommentLoding() {
    var html = `<div>
    <div class="PlaceHolder CommentItemV2">
        <div class="PlaceHolder-inner">
            <div class="PlaceHolder-bg"></div>
            <svg width="656" height="44" viewBox="0 0 656 44" class="PlaceHolder-mask">
                <path d="M0 0h656v44H0V0zm0 0h480v12H0V0zm0 32h238v12H0V32z" fill="currentColor"
                      fill-rule="evenodd"></path>
            </svg>
        </div>
    </div>
</div>`;
    var el = document.createElement('div');
    el.innerHTML = html;
    return el;
}

function processComment(elComment, elCommentWrap) {
    if (!elComment || !elCommentWrap) {
        return;
    }
    let offset = +elComment.dataset.offset,
        answerId = elComment.dataset.answerId,
        isReverse = +elComment.dataset.isReverse,
        isEnd = +elComment.dataset.isEnd
    ;
    if (loadCommentInterval) {
        clearTimeout(loadCommentInterval);
    }
    if (!answerId || isEnd) {
        return;
    }

    loadCommentInterval = setTimeout(function() {
        console.log('beginLoadComment', offset);
        var elLoading = genCommentLoding();
        elCommentWrap.appendChild(elLoading);
        loadCommentData(answerId, offset, isReverse).then(function (json) {
            console.log('getCommentData', offset);
            elComment.dataset.offset = offset + 10;
            elCommentWrap.removeChild(elLoading);
            elLoading = null;
            let html = genCommentHtml(json.data);
            if (json.paging.is_end) {
                elComment.dataset.isEnd = 1;
                html += '<div style="text-align: center; padding: 10px;">全部评论已加载完成...</div>'
            }
            elCommentWrap.insertAdjacentHTML('beforeend', html);
            processAHref(elCommentWrap);
        });
    }, 100);
}

function processAHref(elAncestor) {
    if (elAncestor) {
        forEachArray(
            elAncestor.querySelectorAll('a[href^="https://link.zhihu.com/"]'),
            ele => ele.setAttribute('href', decodeURIComponent(ele.getAttribute('href').replace('https://link.zhihu.com/?target=', '')))
        )

    }
}

function addCss() {
    var style = `
<style type="text/css">
    .my-fold .RichContent-inner {
        max-height: 400px;
    }
    .my-fold .my-more-btn {
        display: block;
    }
    .my-fold .my-less-btn {
        display:none;
    }
    .my-unfold .RichContent-inner {
        max-height: none;
    }
    .my-unfold .my-more-btn {
        display: none;
    }
    .my-unfold .my-less-btn {
        display: block;
    }

    .my-more-btn {
        float: right;
        padding: 0 10px 10px 10px;
    }
    .my-less-btn {
        position: fixed;
        top: 80px;
        right: 10px;
        padding: 0 10px 10px 10px;
        z-index: 2;
        color: black;
        text-shadow: 1px 1px 1px white;
    }
    #my-loading {
        text-align: center;
        padding-bottom: 10px;
    }
    .hide, .my-less-btn.hide {
        display: none;
    }
    .CommentListV2 {
        max-height: 500px;
    }
    a.comment-fold {
        position: fixed;
        right: 10px;
        bottom: 30%;
        padding: 10px;
        z-index: 2;
    }
    .my-updated-time {
        margin-left: 10px;
    }
</style>
<style type="text/css">
@keyframes ldio-4crll70kj {
  0% { transform: rotate(0) }
  100% { transform: rotate(360deg) }
}
.ldio-4crll70kj div { box-sizing: border-box!important }
.ldio-4crll70kj > div {
  position: absolute;
  width: 76px;
  height: 76px;
  top: 12px;
  left: 12px;
  border-radius: 50%;
  border: 8px solid #000;
  border-color: #fe718d transparent #fe718d transparent;
  animation: ldio-4crll70kj 1.4925373134328357s linear infinite;
}
.ldio-4crll70kj > div:nth-child(2) { border-color: transparent }
.ldio-4crll70kj > div:nth-child(2) div {
  position: absolute;
  width: 100%;
  height: 100%;
  transform: rotate(45deg);
}
.ldio-4crll70kj > div:nth-child(2) div:before, .ldio-4crll70kj > div:nth-child(2) div:after {
  content: "";
  display: block;
  position: absolute;
  width: 8px;
  height: 8px;
  top: -8px;
  left: 26px;
  background: #fe718d;
  border-radius: 50%;
  box-shadow: 0 68px 0 0 #fe718d;
}
.ldio-4crll70kj > div:nth-child(2) div:after {
  left: -8px;
  top: 26px;
  box-shadow: 68px 0 0 0 #fe718d;
}
.loadingio-spinner-dual-ring-41hxycfuw5t {
  width: 54px;
  height: 54px;
  display: inline-block;
  overflow: hidden;
  background: none;
}
.ldio-4crll70kj {
  width: 100%;
  height: 100%;
  position: relative;
  transform: translateZ(0) scale(0.54);
  backface-visibility: hidden;
  transform-origin: 0 0; /* see note above */
}
.ldio-4crll70kj div { box-sizing: content-box; }
/* generated by https://loading.io/ */
</style>
    `;
    document.body.insertAdjacentHTML('beforeend', style);
}


// init
if (fromMobile) {
    setTimeout(function () {
        addCss();
        skipOpenApp();
        bindLoadData();
        bindProcessViewport();
    }, 200);
    setTimeout(function () {
        removeAds();
        removeBlock();
        processAHref(document);
        offset += document.querySelectorAll('.List-item').length;
    }, 1000);
}

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