var app = angular.module("app",[]);
app.controller("AppCtrl", function($q. $interval){
var timer = $interval(function(){
},100);
timer.then(success);
function success(){
console.log("done");
}
}) 

--可以的。
var timer = $interval(function(){},100,10);

var timer = $interval(function(){},100, 10);
timer.then(success, error, notify);
function success(){
console.log("done");
}
function error(){
console.log("error");
}
function notify(){
console.log("每次都更新");
}

--通过$interval.cancle(timer);
var timer = $interval(function(){},100, 10);
this.cancel = function(){
$interval.cancel(timer);
}