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javascriptajaxeventspollingbacon.js

bacon.js EventStream representing polling of url at interval

I want to poll a url regularly and get the results as a stream. I'm probably missing something obvious but does anyone know how to do this seemingly simple thing in bacon.js?

Solution

  • Figured it out, this will poll /whatever every 5 seconds and return the results as a stream of values:

    var ajaxE = function() {
  return Bacon.fromPromise(
    $.ajax({
      type: "GET",
      url: "/whatever",
      dataType: "JSON"
    })
  );
};

var stream = Bacon.interval(5000).flatMapLatest(ajaxE);

    Explained here: http://nullzzz.blogspot.com/2012/12/baconjs-tutorial-part-iii-ajax-and-stuff.html (section titled "AJAX with flatMap").