Serialize a form in jQuery, handling radio/checkbox arrays.

jquery-serialize-form.js

/**
 * Parse a form to an object in the format: { input1: 'value', input2: 'some value', etc }.
 * 
 * @param {jQuery} $form The form to parse
 * @returns {Object} The serialized form
 */
function serializeForm( $form ) {
  var serialized = $form.serializeArray(),
    s = '', name = '', prefix = '', index = 0,
    data = { }, arrayNames = { };

  for ( s in serialized ) {
    name = serialized[s]['name'];

    // Handle checkboxes and radios which can have multiple values under the same input name.
    if ( '[]' === name.slice( -2 ) ) {
      index = name in arrayNames ? arrayNames[name] : 0;
      arrayNames[name] = index + 1;

      prefix = name.slice( 0, name.length - 2 );
      name = prefix + '[' + index + ']';
    }
    data[name] = serialized[s]['value'];
  }

  return data;
}