我可以在角度模块中加载一些数据吗?我尝试使用.run(),但只要访问页面就会调用它。例如:假设有2个html页面属于同一个模块:
TestPage1.html:
<html ng-app="myApp">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script src="js/angular.min.js"></script>
<script src="js/jquery-1.8.2.js"></script>
<script src="js/app.js"></script>
</head>
<body>
<p><a ng-href="TestPage2.html">Go to Page2</a></p>
</body>
</html>
TestPage2.html:
<html ng-app="myApp">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script src="js/angular.min.js"></script>
<script src="js/jquery-1.8.2.js"></script>
<script src="js/app.js"></script>
</head>
<body>
<p><a ng-href="TestPage1.html">Go to Page1</a></p>
</body>
</html>
app.js:
var myApp = angular.module('myApp', []);
var cnt = 0;
myApp.run(['$rootScope', '$http', function(scope, $http) {
if(scope.loggedIn == undefined || scope.loggedIn == null) {
$http.get('rest/userData').success(function(data) {
cnt++;
alert(cnt);
scope.loggedIn = true;
});
}
}]);
当我从一个页面导航到另一个页面时,这个.run()会一次又一次地被调用cnt为1.是否可以在模块初始化的一生中调用它一次?或者另一种方式是什么?
答案 0 :(得分:3)
似乎你缺少一些基础知识,比如控制器。典型的角度设置是为您的应用设置ng-view
并通过路由加载其他页面。这是一个简单的例子:
http://beta.plnkr.co/edit/RnZWeWxTJFri49Bvw50v?p=preview
app.js
var app = angular.module('myApp', []).
config(['$routeProvider', function($routeProvider) {
$routeProvider.when('/view1', {templateUrl: 'TestPage1.html', controller: Page1Ctrl});
$routeProvider.when('/view2', {templateUrl: 'TestPage2.html', controller: Page2Ctrl});
$routeProvider.otherwise({redirectTo: '/view1'});
}]).run(function () { // instance-injector
alert('only run on first page load this is where you load data or whatever ONE time'); // this only runs ONE time
})
function MainCtrl($scope) {
$scope.name = 'main';
}
function Page1Ctrl($scope) {
$scope.name = 'page 1';
}
function Page2Ctrl($scope) {
$scope.name = 'page 2';
}
HTML:
<html ng-app="myApp" >
<head>
<meta charset="utf-8">
<title>AngularJS Plunker</title>
<link rel="stylesheet" href="style.css">
<script>document.write("<base href=\"" + document.location + "\" />");</script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.2/angular.js"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
This is the main page. Main nav:
<a ng-href="#/view1">Go to Page1</a>
<a ng-href="#/view2">Go to Page2</a>
<div ng-view></div>
</body>
</html>
你会注意到html中有一个ng-view
,当遇到一个路由,例如#/view
时,routeprovider会查找它并提供正确的模板并调用相应的控制器。我相信这是你想要达到的那种设置。