x.coffee

$ ->
  get_each(trends.islam, 1, (trend) ->
    console.log trend
  )

get_each = (trend, duration, callback) ->
  requests = []

  for term in trend.search_terms
    url = "http://otter.topsy.com/search.js?callback=?&apikey=X&q=#{term.term}&window=#{duration}"
    console.log url
    requests.push($.getJSON(url, (data) ->
      term.total = data.response.total
    ))

  $.when.apply($, requests).then ->
    callback(trend)

x.js

get_each(trends.islam, 1, function(trend) {
  return console.log(trend);
});

get_each = function(trend, duration, callback) {
  var requests, term, url, _i, _len, _ref;
  requests = [];
  _ref = trend.search_terms;
  for (_i = 0, _len = _ref.length; _i < _len; _i++) {
    term = _ref[_i];
    url = "http://otter.topsy.com/search.js?callback=?&apikey=38A260E9D12A4908B1AF9184B691131&q=" + term.term + "&window=" + duration;
    requests.push($.getJSON(url, function(data) {
      return term.total = data.response.total;
    }));
}