// github.com/jquery/jquery/blob/2.1.3/src/manipulation/var/rcheckableType.js // github.com/jquery/jquery/blob/2.1.3/src/serialize.js var submittableSelector = 'input,select,textarea,keygen',

r20 = /%20/g,
rCRLF = /\r?\n/g,
_ = {
  map: require('lodash.map')
};

exports.serialize = function() {

// Convert form elements into name/value objects
var arr = this.serializeArray();

// Serialize each element into a key/value string
var retArr = _.map(arr, function(data) {
  return encodeURIComponent(data.name) + '=' + encodeURIComponent(data.value);
});

// Return the resulting serialization
return retArr.join('&').replace(r20, '+');

};

exports.serializeArray = function() {

// Resolve all form elements from either forms or collections of form elements
var Cheerio = this.constructor;
return this.map(function() {
    var elem = this;
    var $elem = Cheerio(elem);
    if (elem.name === 'form') {
      return $elem.find(submittableSelector).toArray();
    } else {
      return $elem.filter(submittableSelector).toArray();
    }
  }).filter(
      // Verify elements have a name (`attr.name`) and are not disabled (`:disabled`)
      '[name!=""]:not(:disabled)'
      // and cannot be clicked (`[type=submit]`) or are used in `x-www-form-urlencoded` (`[type=file]`)
      + ':not(:submit, :button, :image, :reset, :file)'
      // and are either checked/don't have a checkable state
      + ':matches([checked], :not(:checkbox, :radio))'
  // Convert each of the elements to its value(s)
  ).map(function(i, elem) {
    var $elem = Cheerio(elem);
    var name = $elem.attr('name');
    var val = $elem.val();

    // If there is no value set (e.g. `undefined`, `null`), then return nothing
    if (val == null) {
      return null;
    } else {
      // If we have an array of values (e.g. `<select multiple>`), return an array of key/value pairs
      if (Array.isArray(val)) {
        return _.map(val, function(val) {
          // We trim replace any line endings (e.g. `\r` or `\r\n` with `\r\n`) to guarantee consistency across platforms
          //   These can occur inside of `<textarea>'s`
          return {name: name, value: val.replace( rCRLF, '\r\n' )};
        });
      // Otherwise (e.g. `<input type="text">`, return only one key/value pair
      } else {
        return {name: name, value: val.replace( rCRLF, '\r\n' )};
      }
    }
  // Convert our result to an array
  }).get();

};