知乎用户排行榜生成器0.2版源码

这是我在知乎专栏发表的那篇知乎用户排行榜生成器0.2版的源码,为增强专栏的可读性所以在那边只放了压缩版的。这里是完整版,有兴趣者可以自行调试修改。

这段脚本需要登录知乎网站后在浏览器控制台运行,更详细的用法请点上面链接查看。

//用逗号分隔用户名
var userarray = "guxizhao,zou-dao-kou,xiaodaoren,cai-tong,xu-xiang-nan,unogzx,shenbin,PeterDeng,namiheike,wu-si-yang-32,yskin,jixin";
//回答数限制
var answerlimit = 10;
//赞同数限制
var agreelimit = 1000;
//赞同回答比数限制
var ratiolimit = 10;
//关注者数限制
var followerlimit = 10;

var users = userarray.split(',');
var usercursor = 0;
var result = new Array();
var showtable = true;
var cardcount = 0;

function showmsg(msg) { $("#msg").html(msg); }
function showresult() {
    $("#switchshowtable").show(0);
    $("#sorttype").show(0);
    var rsdiv = $("#result");
    if (showtable) {
        var tablehtm = "<table border='1' cellpadding='2' style='border-collapse: collapse;'><tr><td>编号</td><td>用户名</td><td>关注者</td><td>提问</td><td>回答</td><td>赞同</td><td>赞同/回答比</td></tr>";
        for (i in result) {
            tablehtm += "<tr><td>" + (parseInt(i) + 1) + "</td><td><a href='/people/" + result[i].id + "/' target='_blank'>" + result[i].name + "</a></td><td>" + result[i].follower + "</td><td>" + result[i].ask + "</td><td>" + result[i].answer + "</td><td>" + result[i].agree + "</td><td>" + result[i].ratio + "</td></tr>";
        }
        tablehtm += "</table>";
        rsdiv.html(tablehtm);
    }
    else {
        rsdiv.html("编号,用户名,关注者,提问,回答,赞同,赞同/回答比");
        for (i in result) {
            rsdiv.append("<br/>" + (parseInt(i) + 1) + ",<a href='/people/" + result[i].id + "/' target='_blank'>" + result[i].name + "</a>," + result[i].follower + "," + result[i].ask + "," + result[i].answer + "," + result[i].agree + "," + result[i].ratio);
        }
    }
}

function loadmore() {
    var content = $("#tempframe").contents();
    var name = content.find(".title-section.ellipsis a").html();
    if (content.find('.zu-button-more[aria-role]').length < 1) {
        showmsg(name + "的" + cardcount + "个关注者加载完成");
        showratio();
    }
    else {
        content.find('.zu-button-more[aria-role]').get(0).click();
        var total = content.find(".zm-profile-side-following strong").html();
        cardcount = content.find('.zh-general-list .zm-profile-card .zm-list-content-medium').length;
        showmsg("正在加载" + name + "的关注者:" + cardcount + "/" + total + "... <img style='vertical-align: text-bottom;' src='http://static.zhihu.com/static/img/spinner/grey-loading.gif'/>");
        setTimeout(loadmore, 2000);
    }
}

function showratio() {
    var cards = $("#tempframe").contents().find('.zh-general-list .zm-profile-card .zm-list-content-medium');
    cards.each(function () {
        var name = $(this).find('a.zg-link').html();
        var id = $(this).find('a.zg-link').attr("href").replace("http://www.zhihu.com/people/", "");
        var detail = $(this).find('.details');
        var follower = Number(detail.eq(0).children().eq(0).html().split(' ')[0]);
        var ask = Number(detail.eq(0).children().eq(1).html().split(' ')[0]);
        var answer = Number(detail.eq(0).children().eq(2).html().split(' ')[0]);
        var agree = Number(detail.eq(0).children().eq(3).html().split(' ')[0]);
        if (answer >= answerlimit && agree >= agreelimit && agree / answer >= ratiolimit && follower > followerlimit) {
            var r = new Object();
            r.name = name;
            r.id = id;
            r.follower = follower;
            r.ask = ask;
            r.agree = agree;
            r.answer = answer;
            r.ratio = (agree / answer).toFixed(2);
            addresult(r);
        }
    });
    sortresult();
    showresult();
    usercursor++;
    loaduser();
}

function loaduser() {
    if (usercursor < users.length) {
        showmsg("共" + users.length + "个用户,准备扫描第" + (usercursor + 1) + "个... <img style='vertical-align: text-bottom;' src='http://static.zhihu.com/static/img/spinner/grey-loading.gif'/>");
        $("#tempframe").attr("src", "/people/" + users[usercursor] + "/followees");
    }
    else {
        showmsg("所有" + users.length + "名用户的关注者已经全部扫描完成,共找到" + result.length + "个符合条件的用户");
    }
}

function addresult(r) {
    var exist = false;
    for (i in result) { if (r.id == result[i].id) { exist = true; break; } }
    if (!exist) result.push(r);
}

function sortresult() {
    if (result.length > 0) {
        var type = $("#sorttype").val();
        switch (type) {
            case "ratio":
                result = result.sort(function (a, b) { return b.ratio - a.ratio; });
                break;
            case "agree":
                result = result.sort(function (a, b) { return b.agree - a.agree; });
                break;
            case "answer":
                result = result.sort(function (a, b) { return b.answer - a.answer; });
                break;
            case "ask":
                result = result.sort(function (a, b) { return b.ask - a.ask; });
                break;
            case "follower":
                result = result.sort(function (a, b) { return b.follower - a.follower; });
                break;
            default:
                break;
        }
    }
}

$("body").prepend('<div id="mask" style="width:100%;height:100%;top:0px;left:0px;position:fixed;z-index: 998;background-color: rgba(0, 0, 0, 0.4);text-align:center;"><div id="container" style="width:600px;height:400px;margin:80px auto 0px auto;position: relative;z-index: 999; padding: 5px;"><iframe id="tempframe" style="width:1px;height:1px;top:-999px;left:-999px;position:absolute;"></iframe><div id="msg" style="height: 30px;background-color: #C4D299;line-height: 30px;text-align: left;padding-left: 5px;"></div><div id="result" style="height: 350px;background-color: #F0F0F0;text-align: left;padding: 5px;margin-top: 5px;overflow-y: auto;"></div><input id="switchshowtable" style="display:none;position: absolute;width: 100px;top: 10px;right: 25px;" type="button" value="改为逗号分隔"/><select id="sorttype" name="sorttype" style="display:none;position: absolute;width: 100px;top: 45px;right: 25px;"><option value="ratio" selected>赞同/回答比</option><option value="agree">赞同</option><option value="answer">回答</option><option value="ask">提问</option><option value="follower">关注</option></select></div></div>');
$("#switchshowtable").click(function () { showtable = !showtable; $(this).val(showtable ? "改为逗号分隔" : "改为表格显示"); showresult(); });
$("#sorttype").change(function () { sortresult(); showresult(); });
$("#tempframe").load(function () { loadmore(); });
loaduser();

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6 comments

  1. 匿名 says:

    楼主您好,我最近在学习js,您的loadmore函数中。title-section.ellipsis .zu-button-more[aria-role] 我没有在知乎网页源代码中找到,请问这是如何获得的呢?谢谢。

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    • 苏莉安 says:

      这段脚本是两个月前写的,最近知乎的网页有改版,一些元素的位置和名称变了。
      title-section.ellipsis是为了找用户名,.zu-button-more是为了找“更多”按钮。你可以自己来找一下。

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    • 苏莉安 says:

      这个是网页js脚本,当然不存在cookie的问题了,而“更多”是找到按钮的dom对象然后直接click实现的,也没有保存为文本,而是写到页面div里。

      我不懂Python,你先解决cookie,然后抓包看“更多”访问的是哪个url、带哪些参数就行了。

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      • zihaolucky says:

        嗯、谢谢提供思路。我们已在你的代码基础上做了一点改动,可以抓到不少信息了。不过为了性能以及灵活性,还是得把Python的问题解决才行。

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