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gist: 158622 Download_button fork
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Public Clone URL: git://gist.github.com/158622.git
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/*
 * a smart poller for jquery.
 *    (by github)
 *
 * simple example:
 *
 *   $.smartPoller(function(retry) {
 *     $.getJSON(url, function(data) {
 *       if (data) {
 *         doSomething(data)
 *       } else {
 *         retry()
 *       }
 *     })
 *   })
 *
 * The $.smartPoller function accepts a starting
 * interval in ms but defaults to 1000:
 *
 *   $.smartPoller(2000, function(retry) {
 *
 */
 
;(function($) {
  $.smartPoller = function(wait, poller) {
    if ($.isFunction(wait)) {
      poller = wait
      wait = 1000
    }
 
    (function startPoller() {
      setTimeout(function() {
        poller.call(this, startPoller)
      }, wait)
      wait = wait * 1.5
    })()
  }
})(jQuery);