phonecatApp.controller('TestCtrl',['$scope','$rootScope',
function($scope,$rootScope) {
$rootScope.name = 'this is test';
}
]);

phonecatApp.controller('Test111Ctrl',['$scope','$rootScope',
function($scope,$rootScope) {
$scope.name = $rootScope.name;
}
]);

<div ng-controller="TestCtrl">
Iset the global variable.<strong>{{$root.name}}</strong>
</div>

<div ng-controller="Test111Ctrl">
1,get global variable .<strong>{{name}}</strong><br>
2,get global variable .<strong>{{$root.name}}</strong>
</div>www.111cn.net

I set the global variable.this is test
1,get global variable .this is test
2,get global variable .this is test