dotabuff.user.js

// ==UserScript==
// @name dotabuff KDA display
// @namespace https://gist.github.com/withgod/5010882/
// @description append KDA info
// @author withgod
// @include http://dotabuff.com/*
// ==/UserScript==
(function () {
    setTimeout(function() {
        function _get(elem) {
            return elem.innerText == undefined ? elem.textContent : elem.innerText;
        }
        var kill   = 0,
            death  = 0,
            assist = 0,
            won    = 0,
            lose   = 0;
        var trlist = document.getElementsByTagName('tr');
        for (var i = 0;i < trlist.length; i++) {
            var match = trlist[i];
            var tds   = match.getElementsByTagName('td');
            if (tds.length == 6 || tds.length == 7) {
                var tabs = match.getElementsByTagName('td');
                if (tabs[2].getElementsByTagName('a')[0].className == "won") {
                    won++;
                } else {
                    lose++;
                }
                var kda  = _get(tabs[5].getElementsByTagName('div')[0]).replace(/\s+/, "").split("/");
                if (kda.length != 3) {
                    kda = _get(tabs[5]).replace(/\s+/, "").split("/");
                }
                kill    += parseInt(kda[0]);
                death   += parseInt(kda[1]);
                assist  += parseInt(kda[2]);
            }
        }
        var kd   = Math.round(kill / death * 100) / 100;
        var ad   = Math.round(assist / death * 100) / 100;
        var kda  = Math.round((kd + ad) * 100) / 100;
        var txt = "kd: " + kd + ", ";
        txt    += "ad: " + ad + ", ";
        txt    += "kda: " + kda + ", ";
        txt    += "win rate:" + Math.round(won / (won + lose) * 100) + "%";
        var target = document.getElementById('content-header-primary');
        var append = document.createElement("div");
        append.id = 'append-kda';
        append.innerHTML = txt;
        target.appendChild(append);
        var header = document.getElementById('content-header');
        header.style.height = '80px';
    }, 1000);
})();

の右端の <> を押して一旦ローカルに保存(警告が出てそのままじゃインストール出来なくて、ローカルに保存されてる)

拡張一覧開いてそこにDrag&Drop
参考 http://moondoldo.com/DoldoWorkz/?UserScript%2FChrome%E3%81%A7%E6%89%B1%E3%81%86%E6%96%B9%E6%B3%95#o262938b

後はそれ以降は dotabuff の matchesが有るページに情報追加(matchesやoverviewの所とか)

画面に表示されてるmatchesから計算するので、直近20回のKDAとか、ヒーロー毎のKDAとか出せるよ

• https://chrome.google.com/webstore/detail/dotabuff-kdr/dldgmgkoeanjbbmfphindfbbgbmebclh

chromeの人は拡張使った方が更新とか自動でしてくれるので多分楽。