Why can my code not find the AngularJS $interval? -

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my angularjs code trying call $interval , there's problem in vs2013 saying not found. here's code:

var apprun = [     '$rootscope',     function (         $rootscope         ) {          // not work         $interval(userservice.isauthenticated(), 5000);         // works         $rootscope.$interval(userservice.isauthenticated(), 5000);      }]  app.run(apprun);

can tell me why call $interval. ... not work. why need put $rootscope before ?

$interval angular service need inject inject $rootscope:

var apprun = [     '$rootscope', '$interval',     function ($rootscope, $interval) {         $interval(userservice.isauthenticated(), 5000);     }]  app.run(apprun);

regarding why $rootscope.$interval seems work - may have attached $interval service $rootscope on other part of application. it's not built-in on $rootscope.

in case, should used via injection.


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