jlong

var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";

parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port;     // => "3000"
parser.pathname; // => "/pathname/"
parser.search;   // => "?search=test"
parser.hash;     // => "#hash"
parser.host;     // => "example.com:3000"

dz0ny

  // create an object named "app" which we can define methods on
  var app = {
      // returns an array of each url to prefetch
      searchUniqueWithLimit: function(selector,limit){
          // returns an array for selector
          var hrefs = $(selector).map(function(index, domElement){
            return $(this).attr("href");
          });
          // returns the array of hrefs without duplicates
          return $.unique(hrefs).slice ( 0, limit?limit:5 );