_.serialize Underscore.js mixin

gistfile1.txt

_.mixin({
  // Serialize key-value pairs of an object into urlencoded format
  serialize: function(obj) {
    var pairs = _.pairs(obj);
    return _.reduce(pairs, function(memo, pair) {
      var key = _.first(pair), value = _.last(pair);
      value = _.isFunction(value) ? value() : value;
      return memo + '&' + encodeURIComponent(key) + '=' + encodeURIComponent(value);
    }, '').replace('&', '').replace(/%20/g, '+');
  }
});