ajax-polling

I'm trying for the life of me to get this plugin to work but I'm not understanding the status function so retry is not firing. $.poll(10000, function(retry){ $.get('willfail', function(response, status){ if (status == 'success') { // Do something alert("YES"); } else { alert("NO"); //retry(); } }) }) If I set the get request to '/' it will give me the alert YES message, but as it is, the alert No message never gets fired despite the ELSE. I'm using a jquery polling plugin: https://github.com/jeremyw/jquery-smart-poll Any ideas? That is probably a bad example. The callback passed to $.get will

Been studying a ton on AJAX because I'm making a real-time application out of Javascript and PHP. It needs to be able to update without refreshing the page and in real-time. I tried polling the server with setInterval() but for it to be quick I had to have it every second. It seems to be using a ton of bandwidth though. It does work however and I have a plan with my hosting provider for 'unlimited bandwidth'. It seems like a lot of stress on the site though so I wanted to use a Push technology. Learning how to setup Push was extremely difficult. From what I managed to figure out, you have to

I want to know how to use ajax push . i have learnt from various Web articles that Ajax push can be obtained by using few programmes like COMET, APE (AJAX PUSH ENGINE) etc.... But i want to know whether there is a simpler way of using it and what language is used to implement ajax push. because in the articles which i have seen. they are using java. which i did not learn :( so i would like to know whether there is something like : a javascript in your server which sets an interval to a particular item and then if any changes found then echo it out using php. ? please help me out for this . its

I'm creating an Ngrx Angular 2 app and was trying to get my http calls to continue polling after a time interval. I have seen the use of the interval() function, but in case of Ngrx, when service calls are done inside @Effect() , it gives an error. Please advise: @Injectable() export class TasksEffects { constructor( private actions$: Actions, private TS: TaskService ){} @Effect() onLoadTasksLoadTasks$: Observable<Action> = this.actions$.ofType(tasksActions.ActionTypes.LOAD_TASKS) .switchMap(() => { return this.TS.index() .map((res) => new tasksActions.LoadTasksSuccessAction(res.json()))

I'm currently polling the server to check for new data, and then update the model in an AngularJS app accordingly. He're roughly what I'm doing: setInterval(function () { $http.get('data.json').then(function (result) { if (result.data.length > 0) { // if data, update model here } else { // nothing has changed, but AngularJS will still start the digest cycle } }); }, 5000); This works fine, but most of the requests will not result in any new data or data changes, but the $http service doesn't really know/care and will still trigger a digest cycle. I feel this is unnecessary (since the digest

Is there a big difference (in terms of performance, browser implementation availability, server load etc) between HTML5 SSEs and straight up Ajax polling? From the server side, it seems like an EventSource is just hitting the specified page every ~3 seconds or so (though I understand the timing is flexible). Granted, it's simpler to set up on the client side than setting up a timer and having it $.get every so often, but is there anything else? Does it send fewer headers, or do some other magic I'm missing? Ajax polling adds a lot of HTTP overhead since it is constantly establishing and