Query string as an object

qsObj.js

var queryStringToObj = function() {
  var qs = location.search.substr(1).split(/&/);
  var q = {};
  for (var i=0; i<qs.length; i+=1) {
    var queryVar = qs[i].split('=');
    var key = decodeURIComponent(queryVar[0]);
    var val = (queryVar[1] === undefined) ? null : decodeURIComponent(queryVar[1]);
    q[key] = val;
  }
  return q;
};