jQuery select下拉框单选和多选插件

js代码

<script type="text/javascript" src="js/chosen.jquery.js"></script>
<script type="text/javascript">
	$('.form-control-chosen').chosen({
	  allow_single_deselect: true,
	  width: '100%'
	});
	$('.form-control-chosen-required').chosen({
	  allow_single_deselect: false,
	  width: '100%'
	});
	$('.form-control-chosen-search-threshold-100').chosen({
	  allow_single_deselect: true,
	  disable_search_threshold: 100,
	  width: '100%'
	});
	$('.form-control-chosen-optgroup').chosen({
	  width: '100%'
	});

	$(function() {
	  $('[title="clickable_optgroup"]').addClass('chosen-container-optgroup-clickable');
	});
	$(document).on('click', '[title="clickable_optgroup"] .group-result', function() {
	  var unselected = $(this).nextUntil('.group-result').not('.result-selected');
	  if(unselected.length) {
		unselected.trigger('mouseup');
	  } else {
		$(this).nextUntil('.group-result').each(function() {
		  $('a.search-choice-close[data-option-array-index="' + $(this).data('option-array-index') + '"]').trigger('click');
		});
	  }
	});
</script>