angularjsHow do I use AngularJS to create a websocket example?
Using AngularJS to create a websocket example involves the following steps:
- Include the
AngularJS
library in your HTML page:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
- Create an AngularJS
module
and inject the$websocket
service:
var app = angular.module('myApp', ['ngWebSocket']);
- Create a
service
to establish a websocket connection with the server:
app.service('myService', function($websocket) {
var dataStream = $websocket('ws://localhost:8080/');
var collection = [];
dataStream.onMessage(function(message) {
collection.push(JSON.parse(message.data));
});
var methods = {
collection: collection,
get: function() {
dataStream.send(JSON.stringify({ action: 'get' }));
}
};
return methods;
});
- Inject the
myService
service into the controller:
app.controller('myCtrl', function($scope, myService) {
$scope.collection = myService.collection;
});
- Use the
myService.get()
method to get data from the server:
myService.get();
- Bind the
collection
to the view to display the data:
<div ng-controller="myCtrl">
<ul>
<li ng-repeat="item in collection">{{item}}</li>
</ul>
</div>
- Finally, open the websocket connection:
dataStream.onOpen(function() {
console.log('connection is opened');
});
Output: connection is opened
Helpful links
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