<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="personCtrl">
<button ng-click="toggle()">点击</button>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
var submitml=0; //（设置变量，初始为0）
$scope.toggle = function() {
submitml++; //（当点击一次按钮，自加一）
if(submitml<3)
{
alert(submitml)
}else
{
window.location.href='http://www.baidu.com';
}
};
});
</script>
</body>
</html>