In fact, you can place the controller at the html level and change the link href tag:
Demo
Controller:
var app = angular.module('plunker', []); app.controller('MainCtrl', function($scope) { $scope.name = 'World'; }); app.controller('headController', function($scope) { $scope.stylePath = 'style.css' $scope.changePath = function() { $scope.stylePath='style2.css'; }; });
Markup:
<!doctype html> <html ng-app="plunker" ng-controller='headController' > <head > <meta charset="utf-8"> <title>AngularJS Plunker</title> <script>document.write('<base href="' + document.location + '" />');</script> <link rel="stylesheet" href="{{stylePath}}"> <script src="http://code.angularjs.org/1.1.4/angular.js"></script> <script src="app.js"></script> </head> <body ng-controller="MainCtrl"> Hello {{name}}! <button ng-click="changePath()">Change</button> </body> </html>