My own octopress github.js file with random repository fetch

github.js

var github = (function(){
  function render(target, repos){
    var i = 0, fragment = '', t = $(target)[0];

    for(i = 0; i < repos.length; i++) {
      fragment += '<li><a href="'+repos[i].html_url+'">'+repos[i].name+'</a><p>'+repos[i].description+'</p></li>';
      t.innerHTML = fragment;
}
  }
  return {
    showRepos: function(options){
      $.ajax({
          url: "https://api.github.com/users/"+options.user+"/repos?callback=?"
        , type: 'jsonp'
        , error: function (err) { $(options.target + ' li.loading').addClass('error').text("Error loading feed"); }
        , success: function(data) {
          var repos = [];
         if (!data || !data.data) { return; }

         if (options.random) {
            // var limit=data.repositories.length+1;
            var rand = Math.floor(Math.random() * 11);
            repos.push(data.data[rand]);

          } else {

            for (var i = 0; i < data.data.length; i++) {
              if (options.skip_forks && data.data[i].fork) { continue; }
              repos.push(data.data[i]);
            }
            repos.sort(function(a, b) {
              var aDate = new Date(a.pushed_at).valueOf(),
                  bDate = new Date(b.pushed_at).valueOf();

              if (aDate === bDate) { return 0; }
              return aDate > bDate ? -1 : 1;
            });

            if (options.count) { repos.splice(options.count); }
          }
          render(options.target, repos);
        }
      });
    }
  };
})();