<script type="text/javascript">
var getUrlParameter = function getUrlParameter(sParam) {
  var sPageURL = decodeURIComponent(window.location.search.substring(1)),
  sURLVariables = sPageURL.split('&'),
  sParameterName,
  i;

  for (i = 0; i < sURLVariables.length; i++) {
    sParameterName = sURLVariables[i].split('=');

    if (sParameterName[0] === sParam) {
      return sParameterName[1] === undefined ? true : sParameterName[1];
    }
  }
};

var cat = getUrlParameter('cat');

$( document ).ready(function() {
  $.ajax({
    url: "anURL",
    dataType: 'json',
    success: function(responseAdvertiser){

      $.each(responseAdvertiser, function (index, value) {
        var check = value[hasDia];
          if (check == true){
            $('.listaPromociones').append('<input type="hidden" ng-model="newCategory" value="'+cat+'"/>{{newCategory}}');
          }
        }
      )
    },error: function(responseAdvertiser) {console.log(responseAdvertiser);}
  });

});


  
</script>
<body ng-app="SteroidsApplication">

  <div class="padding" ng-controller="CatController" ng-init="init(dia)">

    <div class="listaPromociones">

    </div>
    </div>
</body>
var app = angular.module('SteroidsApplication', [
  'supersonic'
  ]);

app.controller('CatController', ['$scope','supersonic','$window', function($scope, supersonic, $window) {

   
    $scope.categoryId = $scope.newCategory;
 
}]);
<script src="/scripts/catController.js"></script>
<script>
  $(document).ready(function() {

        var link = 'http://localhost/main.html?cat={{categoryId}}';
        console.log(link);

</script>
<div id="menuWrap" ng-controller="CatController" style="width:100%; height:100%;">
  <div class="list listadeDias awesome-nav-bar">


  
  </div>
</div>