jQuery四级联动下拉菜单代码

部分js代码

	<script type=\"text/javascript\">
		var $town = $(\'#demo3 select[name=\"town\"]\');
		var townFormat = function(info){
			$town.hide().empty();
			if(info[\'code\']%1e4&&info[\'code\']<7e5){	//是否为“区”且不是港澳台地区
				$.ajax({
					url:\'http://passer-by.com/data_location/town/\'+info[\'code\']+\'.json\',
					dataType:\'json\',
					success:function(town){
						$town.show();
						for(i in town){
								$town.append(\'<option value=\"\'+i+\'\">\'+town[i]+\'</option>\');
						}
					}
				});
			}
		};
		$(\'#demo3\').citys({
			province:\'福建\',
			city:\'厦门\',
			area:\'思明\',
			onChange:function(info){
				townFormat(info);
			}
		},function(api){
			var info = api.getInfo();
			townFormat(info);
		});
	</script>