文件层级
index.html
<!DOCTYPE html>
<html ng-app="nickApp">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title>angular之$broadcast、$emit、$on传值</title>
<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
<script src="http://apps.bdimg.com/libs/angular-ui-router/0.2.15/angular-ui-router.min.js"></script>
<script src="js/route.js"></script>
<script src="js/app.js"></script>
<script src="js/service/PublicDataService.js"></script>
</head>
<body ng-controller="bodyCtl">
<button ng-click="goHome()">go home</button>
<button ng-click="goMain()">$state go main</button>
<a ui-sref="main({paramsData:‘ui-sref‘})">ui-sref go main</a>
<div ui-view></div>
<h2>$emit $broadcast $on</h2>
<div ng-controller="ParentCtrl"> <!--父级-->
<div ng-controller="SelfCtrl"> <!--自己-->
<button class="btn" ng-click="click()">click me</button>
<div ng-controller="ChildCtrl"></div> <!--子级-->
</div>
<div ng-controller="BroCtrl"></div> <!--平级-->
</div>
</body>
</html>
templates - home.html
<h2>home</h2> <button ng-click="goMain()">$state go main</button>
templates - main.html
<h2>main</h2>
js - route.js
var nickApp = angular.module(‘nickApp‘, [‘ui.router‘])
.config([‘$stateProvider‘, ‘$urlRouterProvider‘, function ($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise(‘/home‘);
$stateProvider
.state(‘home‘, {
url: ‘/home‘,
templateUrl: ‘templates/home.html‘,
controller: ‘HomeCtl‘,
//params: {paramsData: null}
navButtons:[] //自定义一些参数 在controll通过$state.get(‘home‘)得到对象
})
.state(‘main‘, {
url: ‘/main‘,
templateUrl: ‘templates/main.html‘,
controller: ‘MainCtl‘,
params: {paramsData: null} //目标页面定义接收的参数prameData
})
}])
js - app.js
nickApp
.controller(‘bodyCtl‘, [‘$state‘, ‘$scope‘, function ($state, $scope) {
$scope.goMain = function () {
$state.go(‘main‘, {paramsData: ‘body go main‘});//传参时参数一致prameData--目标页路由配置params:{paramsData: null}
};
$scope.goHome = function () {
$state.go(‘home‘, {paramsData: ‘home page‘});//目标页路由未配置params则$stateParams 为空
};
$scope.data = ‘body data‘;
console.log($scope.data);
console.log($scope.homeData);//父无法用子scope homeData 使用方法传值接收 $on $emit $broadcast
}])
.controller(‘HomeCtl‘, [‘$scope‘, ‘$state‘, ‘$stateParams‘, function ($scope, $state, $stateParams) {
$scope.goMain = function () {
$state.go(‘main‘, {param: ‘home go main‘});//不一致 $stateParams 接收不到则为目标页面定义接收的参数{paramsData: null}
};
console.log($stateParams);
console.log($scope.data);//子用父scope data
$scope.homeData = ‘home data‘;
console.log($scope.homeData);
console.log($state.get(‘home‘));
console.log($state.get(‘main‘));
}])
.controller(‘MainCtl‘, [‘$scope‘, ‘$stateParams‘, function ($scope, $stateParams) {
console.log($stateParams);
console.log($scope.data);//子用父scope data
}])
//$emit 子向父 controller 传 event、data -- $broadcast 父传子 -- $on 接收
.controller(‘SelfCtrl‘, [‘$scope‘, ‘PublicDataService‘, function ($scope, PublicDataService) {
$scope.click = function () {
$scope.$broadcast(‘to-child‘, ‘to-child data‘); //父传子
$scope.$emit(‘to-parent‘, ‘to-parent data‘); //子传父
};
$scope.publicData = PublicDataService.publicData;
console.log($scope.publicData);
}])
.controller(‘ParentCtrl‘, [‘$scope‘, ‘PublicDataService‘, function ($scope, PublicDataService) {
$scope.$on(‘to-parent‘, function (event, data) {
console.log(‘ParentCtrl--‘ + data); //父controller能得到传给父级值
});
$scope.$on(‘to-child‘, function (event, data) {
console.log(‘ParentCtrl--‘ + data); //父controller得不到传给子级值
});
$scope.publicData = PublicDataService.publicData;
console.log($scope.publicData);
}])
.controller(‘ChildCtrl‘, [‘$scope‘, ‘PublicDataService‘, function ($scope, PublicDataService) {
$scope.$on(‘to-child‘, function (event, data) {
console.log(‘ChildCtrl--‘ + data); //子controller能得到传给子级值
});
$scope.$on(‘to-parent‘, function (event, data) {
console.log(‘ChildCtrl--‘ + data); //子controller得不到传给父级值
});
$scope.publicData = PublicDataService.publicData;
console.log($scope.publicData);
}])
/*
平级得不到值 解决办法
*用上面的$state.go()
*或者定义一个公共服务 PublicDataService 注入 controller 就可以使用了
*或 在配置路由时自定义一些参数 在controll--HomeCtl通过$state.get(‘home‘)得到一个对象，它包含了配置home页的路由参数
*/
.controller(‘BroCtrl‘, [‘$scope‘, ‘PublicDataService‘, function ($scope, PublicDataService) {
$scope.$on(‘to-parent‘, function (event, data) {
console.log(‘BroCtrl‘, data); //平级得不到值
});
$scope.$on(‘to-child‘, function (event, data) {
console.log(‘BroCtrl‘, data); //平级得不到值
});
$scope.publicData = PublicDataService.publicData;
console.log($scope.publicData);
}])
js - service - PublicDataService.js
nickApp
.factory(‘PublicDataService‘, [function () {
var publicData = ‘public service data‘;
return {
publicData: publicData
}
}])
时间： 2024-11-17 15:51:59