coffeescript FTW

coffeewins.coffee

# coffee
formatData = (data)->
  for d in data
    date: convertTimestampToDate(d.x)
    price: d.y || 0
    id: d.x

# js
formatData = function(data) {
  var results = [];
  for (var i = 0, len = data.length; i < len; i++) {
    var d = data[i];
    results.push({
      date: convertTimestampToDate(d.x),
      price: d.y || 0,
      id: d.x
    });
  }
  return results;
};