gyazzのrow-textをjsでevalします　id='req'に生テキストが入っててid='res'が存在してれば動く

evalgyazz.js

var scr;

String.prototype.repeat = function (num) {
  for (var i = 0, b = ''; i < num; i++) b += this;
  return b;
};

(function () {
  // CONSTANTS
  var reg = {
    boost : /^(\s*)(.*)$/gi,
    fixer : /(\s\s+)/gi,
    bolds : /\[\[\[(.+?)\]\]\]/gi,
    image : /\[\[(https*:\/\/.+?\.(jpg|jpeg|png|gif|tif))\]\]/gi,
    altmg : /\[\[(https*:\/\/.+?) (https*:\/\/.+?\.(jpg|jpeg|png|gif|tif))\]\]/gi,
    alter : /\[\[(https*:\/\/.+?) (.+?)\]\]/gi,
    gistc : /\[\[(https:\/\/gist\.github\.com\/(.+?)\.js\?file=(.+?))\]\]/gi,
    outer : /\[\[(https*:\/\/.+?)\]\]/gi,
    dirup : /\[\[(.+?)::(.+?)\]\]/gi,
    twttr : /\[\[(@(.+?))\]\]/gi,
    inner : /\[\[(.+?)\]\]/gi
  } , loc = 'gyazz.com'
    , lpn = location.href.replace(new RegExp('https*:\\/\\/' + loc + '\\/(.*)', 'gi'), '$1')
    , box = (lpn.split('/'))[0]
    , doc = ((lpn.split('/')).slice(1)).join('/')
    , req = document.getElementById('req')
    , raw = req.innerHTML.split("\n")
    , res = document.getElementById('res')
    , ind = raw.map(function (sig) { return sig.replace(reg.boost, '$1').length })
    , fix = raw.map(function (sig, n) { return sig.replace(reg.boost,'$2').split(reg.fixer) })
    , fxn = 0, fxr = 0;
  // TEST
  if ('http' == lpn.substr(0,4)) {
    alert("FIXME on script.js:22 loc = '" + loc + "'");
    return false;
  }
  if (null == req) {
    alert("FIXME on script.js:26 req = document.getElementById(~)");
    return false;
  }
  if (null == res) {
    alert("FIXME on script.js:28 res = document.getElementById(~)");
    return false;
  }
  req.style.display = 'none';

  // TRANSLATOR
  for (var i = 0; i < raw.length; i++) {
    // RegExp
    raw[i] = raw[i]
      .replace(reg.boost, '$2')
      .replace(reg.bolds, '<b>$1</b>')
      .replace(reg.altmg, '<a href="$1"><img src="$2"></a>')
      .replace(reg.image, '<a href="$1"><img src="$1"></a>')
      .replace(reg.alter, '<a href="$1">$2</a>')
      .replace(reg.gistc, '<div class="embgist">$1</div>')
      .replace(reg.outer, '<a href="$1">$1</a>')
      .replace(reg.dirup, '<a href="//'+loc+'/'+'$1/$2">$2</a>')
      .replace(reg.twttr, '<a href="//twitter.com/$2">$1</a>')
      .replace(reg.inner, '<a href="//'+loc+'/'+box+'/$1">$1</a>');
    // Table Emulator Prepare
    if (0 < fix[i].length - 1) {
      var fxc = 0;
      if (i != 0 && fix[i-1].length != fix[i].length) {
        fxn++;
        fxr = 1;
      } else {
        fxr++;
      }
      for (var j = 0; j < fix[i].length; ++j) {
        if (0 == j%2) {
          fxc++;
          fix[i][j] = '<div class="fixspan " x-idt="' + String(fxn) + String(fxc) + '" x-idi="' + String(fxn) + String(fxr) + String(fxc) + '">' + fix[i][j] + '</div>';
        } else {
          fix[i][j] = '';
        }
      }
      raw[i] = '<span class="fxn' + fxn + '">' + fix[i].join('') + '</span>';
    }
    // Indent
    if (i != 0 && ind[i] > ind[i-1]) {
      raw[i] = '<ul><li>'.repeat(ind[i]-ind[i-1]) + raw[i];
    } else if (i != 0 && ind[i] < ind[i-1]) {
      raw[i] = '</li></ul>'.repeat(ind[i-1]-ind[i]) + '<li>' + raw[i];
    } else {
      raw[i] = '</li><li>' + raw[i];
    }
  }
  res.innerHTML = '<ul>' + raw.join('') + '</ul>';

  // Table Emulator Execute
  for (var i = 1; i <= fxn; i++) {
    var max = {}, row = document.querySelectorAll('.fxn' + i);
    for (var r = 0; r < row.length; r++) {
      var col = row[r].querySelectorAll('.fixspan');
      for (var c = 0; c < col.length; c++) {
        var ids = [ i, r+1, c+1 ]
          , idi = ids.join('')
          , idt = String(ids[0]) + String(ids[2])
          , cwt = document.querySelector('div[x-idi="' + idi + '"]').clientWidth;
        if ('undefined' == typeof(max[idt])) max[idt] = 0;
        max[idt] = max[idt] < cwt ? cwt : max[idt];
      }
    }
    for (var j = 0; j < row.length; j++) {
      var str = row[j].getElementsByTagName('div');
      for (var k = 0; k < str.length; k++) {
        str[k].style.width = max[str[k].getAttribute('x-idt')] + 12 + 'px';
      }
    }
  }

  // GIST
  scr = document.querySelectorAll('.embgist');
  if (0 < scr.length) {
    var xhr = [];
    for (var i = 0; i < scr.length; i++) {
      var uri = scr[i].innerText;
      scr[i].innerHTML = '<b><i>[[[ loading gist... ]]]</b></i>';
      scr[i].style.display = 'block';
      xhr[i] = new XMLHttpRequest();
      xhr[i].onreadystatechange = function () {
        if (4 == this.readyState) {
          var res = JSON.parse(this.responseText);
          scr[res.id].innerHTML = res.code.replace(/\\n*/g, '').replace(/document\.write\('(.+)'\)/gi, '$1');
        }
      }
      xhr[i].open('POST', '/gist?id='+i+'&code='+uri, true);
      xhr[i].send();
    }
  }
}());