demo.html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>AngularJS</title>
<script src="angular.min.js"></script> <!-- 引入AngularJS框架 -->
</head>
<body ng-app="App">
<div ng-controller="DemoController">
{{information}}
<br>
{{now}}
</div>
<script>
var App = angular.module('App',[]);
// $timeout和$interval内置服务
App.controller("DemoController",['$scope','$timeout','$interval',function($scope,$timeout,$interval) {
$scope.information = 111;
$timeout(function(){ // timeout延迟执行
$scope.information = 222;
},2000);
var i = 0;
var timer = $interval(function() { // interval定时器
$scope.now = new Date();
i++;
if(i==5){
$interval.cancel(timer); // 清除定时器。
}
},1000);
}]);
</script>
</body>
</html>