【发布时间】:2013-01-23 19:32:55
【问题描述】:
如何观察/触发路线变化的事件?
【问题讨论】:
标签: javascript angularjs
如何观察/触发路线变化的事件?
【问题讨论】:
标签: javascript angularjs
由于某种原因,使用 $routeChangeStart 事件的建议解决方案对我不起作用
如果你遇到同样的问题,试试:
$scope.$on('$stateChangeStart', function(evt, toState, toParams, fromState, fromParams) {
// ... you could trigger something here ...
});
在我的配置中,我使用来自节点包管理器(又名 npm)的 @ui-router/angularjs(又名 angular-ui-router)
【讨论】:
这是给初学者的......像我一样:
HTML:
<ul>
<li>
<a href="#"> Home </a>
</li>
<li>
<a href="#Info"> Info </a>
</li>
</ul>
<div ng-app="myApp" ng-controller="MainCtrl">
<div ng-view>
</div>
</div>
角度:
//Create App
var app = angular.module("myApp", ["ngRoute"]);
//Configure routes
app.config(function ($routeProvider) {
$routeProvider
.otherwise({ template: "<p>Coming soon</p>" })
.when("/", {
template: "<p>Home information</p>"
})
.when("/Info", {
template: "<p>Basic information</p>"
//templateUrl: "/content/views/Info.html"
});
});
//Controller
app.controller('MainCtrl', function ($scope, $rootScope, $location) {
$scope.location = $location.path();
$rootScope.$on('$routeChangeStart', function () {
console.log("routeChangeStart");
//Place code here:....
});
});
希望这对像我这样的初学者有所帮助。这是完整的工作示例:
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular-route.min.js"></script>
</head>
<body>
<ul>
<li>
<a href="#"> Home </a>
</li>
<li>
<a href="#Info"> Info </a>
</li>
</ul>
<div ng-app="myApp" ng-controller="MainCtrl">
<div ng-view>
</div>
</div>
<script>
//Create App
var app = angular.module("myApp", ["ngRoute"]);
//Configure routes
app.config(function ($routeProvider) {
$routeProvider
.otherwise({ template: "<p>Coming soon</p>" })
.when("/", {
template: "<p>Home information</p>"
})
.when("/Info", {
template: "<p>Basic information</p>"
//templateUrl: "/content/views/Info.html"
});
});
//Controller
app.controller('MainCtrl', function ($scope, $rootScope, $location) {
$scope.location = $location.path();
$rootScope.$on('$routeChangeStart', function () {
console.log("routeChangeStart");
//Place code here:....
});
});
</script>
</body>
</html>
【讨论】:
注意:这是 AngularJS 旧版本的正确答案。更新版本见this question。
$scope.$on('$routeChangeStart', function($event, next, current) {
// ... you could trigger something here ...
});
以下事件也可用(它们的回调函数采用不同的参数):
请参阅$route 文档。
还有另外两个undocumented 事件:
见What's the difference between $locationChangeSuccess and $locationChangeStart?
【讨论】:
$locationChangeStart 和 $locationChangeSuccess 现已记录在案! docs.angularjs.org/api/ng.$location
$rootScope.$on("$routeChangeStart", function (event, next, current) {。
$rootScope.$on( "$routeChangeStart", function(event, next, current) {
//if you want to interrupt going to another location.
event.preventDefault(); });
【讨论】:
如果您不想将手表放在特定控制器中,您可以在 Angular 应用 run() 中为整个应用程序添加手表
var myApp = angular.module('myApp', []);
myApp.run(function($rootScope) {
$rootScope.$on("$locationChangeStart", function(event, next, current) {
// handle route changes
});
});
【讨论】:
$rootScope.$on( "$routeChangeStart", function(event, next, current) {
//..do something
//event.stopPropagation(); //if you don't want event to bubble up
});
【讨论】: