angular and socket.io - wrong code structure
Question
I'm quite new with Node/Angular/.. and tried this simple script. But it doesn't work, whats wrong with it?
I always get Error: [ng:areq] http://errors.angularjs.org/1.3.0/ng/areq?p0=rCtlr&p1=not%20a%20function%2C%20got%20undefined
<!DOCTYPE html>
<html ng-app>
<head lang="en">
<meta charset="UTF-8">
<title>test</title>
<script src="lib/angular/1.3.0/angular.min.js"></script>
<script src="lib/socket.io/1.2.0/socket.io.js"></script>
</head>
<body ng-controller="rCtlr">
<h1>{{xTime}}</h1>
<script>
function rCtlr($scope){
var socket = io.connect();
socket.on('updateTime', function (data) {
$scope.xTime = data.updateTime;
console.log(data);
});
}
</script>
</body>
</html>
Without Angular it works fine, I guess there is an issue with the function scope? Thanks for help!
2 answers
solution1
0 ACCPTED 2014-11-21 14:14:52
To make it work properly you should: 1) Add name to your ng-app:
<html ng-app="myapp"> //myapp is an example name
2) Then you can define angular module and controller like this:
angular.module("myapp",[]) // define module with name from ng-app
.controller('rCtlr',['$scope', function($scope){ //define controller for your module
var socket = io.connect();
socket.on('updateTime', function (data) {
$scope.xTime = data.updateTime;
console.log(data);
});
}]);
alternatively (it does the same):
var app = angular.module("myapp",[]);
app.controller('rCtlr',['$scope', function($scope){
//controller body
}]);
PS. It doesn't matter, but name of you controller should be "rCtrl" rather than "rCtlr"
Here is a refference to angular docs: https://docs.angularjs.org/guide/controller
solution2
0 2014-11-21 16:27:10
Update, thanks to MarkS: But .. see comment to Mark's answer
<!DOCTYPE html>
<html >
<head lang="en">
<meta charset="UTF-8">
<title>AngularSocket</title>
<script src="lib/angular/1.3.0/angular.min.js" type="text/javascript"></script>
<script src="lib/socket.io/1.2.0/socket.io.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
</head>
<body data-ng-app="angApp">
<div data-ng-controller="timeCtrl">
<h1>{{xTime}}</h1>
</div>
</body>
</html>
app.js:
angular
.module('angApp', [])
.controller('timeCtrl', ['$scope', function($scope) {
var socket = io.connect();
socket.on('updateTime', function (data) {
$scope.xTime = data.updateTime;
console.log(data);
});
}]);
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