Give Me Data or Give Me Death

If your web app talks like this, it might need an AjaxModule. This simple little module will make requests to the backend at a defined interval. It is easily extendable, and recommended to do so.

If used as a simple object, your app can listen to the same-named jQuery AJAX events, done, fail, and always.

var scoreboard = new AjaxModule({
   request : Server.getLatestScores,
   interval : 25000
})
.on('done', function(data){
   app.updateScoreBoard(data);
})
.on('fail', function(){
   app.showSyncError();
});

If extended as a class, take advantage of the built in callbacks and overridable data processing.

class ScoreBoard extends AjaxModule {
   constructor(){
      // instead of a defined request function,
      // you could pass in options for $.ajax
      super({
         url : '/score/latest/',
         data : {teams:'all'}
      }); 
      // renders the scores
      this.displayBoard = new DisplayBoard();
      return this;
   }

   // done callback
   _done(data){
      // data will always be processed by _cacheData and _processData
      this.displayBoard.render(this._processedData);
   }

   _processData(data){
      this._processedData = super._processData(data);
      this._processedData.mapleLeafs += 2;
      this._processedData.habs = 0;
      return this;
   }
}