var myApp = angular.module('myApp',[]);

​

myApp.controller('TestController', ['$scope', function($scope) {

        $scope.selectOption = '2';

}]);

​

myApp.directive('myDir', function() {

  return {

    restrict: 'E',

    link : function (scope, element) {

      var myWidth = element.width();

      var mySon = element.find('.my-dir-content');

      console.log(myWidth);

      mySon.width(myWidth);     },

        template: '<div class="my-dir">' +

    '<div class="my-dir-content"> </div>' +

    '</div>'

  };

});

​

​