JS automation of survey completion (with weighting)

survey-completion.js

function blam(sentiment) {
  var sentiment = sentiment || null;

  $('input:text, textarea').each(function() {
    $(this).val('Generic ' + sentiment + '\'ve input!');
  });

  $('.question:contains("Email") input:text').val('[email protected]');

  $('.date-picker').val('October 08, 2014');

  $('select').each(function() {
    $options = $(this).find('option:not(:empty)');
    $options.eq(~~(Math.random() * $options.length)).prop('selected', true);
  });

  $('.question:contains("Ranking")').each(function() {
    var ranked = [];

    $(this).find('select').each(function() {
      $options = $(this).find('option:not(:empty)').not(
        ranked
          .map(function(option) {
            return '[value="' + option + '"]';
          })
          .join(',')
      );

      $options.eq(~~(Math.random() * $options.length)).prop('selected', true);

      ranked.push($(this).val());
    });
  });

  questions = $
    .unique(
      $('input:radio').map(function() {
        return $(this).attr('name');
      })
    )
    .map(function(i, name) {
      return $('input[name="' + name + '"]');
    })
  ;

  $.each(questions, function(i, $question) {
    var multiplier = Math.random();

    if (sentiment !== null) {
      // weight 75% in the direction of the sentiment
      if (sentiment == '+' && Math.random() < .75 || sentiment == '-' && Math.random() > .75) {
        // +'ve weighting
        multiplier = multiplier * .5 + .5
      } else {
        // -'ve weighting
        multiplier = multiplier * .5
      }
    }

    var x = Math.round($question.length * multiplier);

    $(this).eq(x).click();
  });
}

blam('+');

$('form').submit();