currently I am trying to use angularjs with node and socketio. But I am getting the following error.
TypeError: Cannot read property 'emit' of undefined at k.$scope.EnteredUsername ( http://localhost:1337/js/controllers.js:34:19 )
It seems like he doesnt know 'socket', when the enteredUsername()-Function is called. Is there something wrong with my factory?
app.js:
'use strict';
angular.module('myApp', [
'ngRoute',
'myApp.filters',
'myApp.services',
'myApp.directives',
'myApp.controllers'
])
.config(['$routeProvider', function($routeProvider) {
$routeProvider.when('/viewUsername', {templateUrl: 'partials/username.html', controller: 'usernameCtrl'});
$routeProvider.when('/viewImpressum', {templateUrl: 'partials/impressum.html', controller: 'impressumCtrl'});
$routeProvider.otherwise({redirectTo: '/viewUsername'});
}]);
controllers.js:
'use strict';
/* Controllers */
angular.module('myApp.controllers', [])
.factory('socket', function($rootScope) {
var socket = io.connect('http://localhost:1337');
return {
on: function(eventName, callback) {
socket.on(eventName, function() {
var args = arguments;
$rootScope.$apply(function() {
callback.apply(socket, args);
});
});
},
emit: function(eventName, data, callback) {
socket.emit(eventName, data, function() {
var args = arguments;
$rootScope.$apply(function() {
if(callback) {
callback.apply(socket, args);
}
});
});
}
};
})
.controller('usernameCtrl', ['$scope', function($scope, socket) {
$scope.username = 'guest';
$scope.EnteredUsername = function() {
var username = $scope.username;
socket.emit('enteredUsername', username);
}
}]);
您错过了将其添加为字符串的情况:
.controller('usernameCtrl', ['$scope', 'socket', function($scope, socket) {
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