bootstrap里bootstrap动态加载下拉框的实例讲解

//引入的包
<!-- bootstrap -->
<link rel="stylesheet" type="text/css" href="map/plug-in/scripts/bootstrap/bootstrap.min.css" rel="external nofollow" />
<link rel="stylesheet" type="text/css" href="map/plug-in/scripts/bootstrap/bootstrap-select.css" rel="external nofollow" />
<script type="text/javascript" src="map/plug-in/scripts/bootstrap/bootstrap.min.js"></script>
<script type="text/javascript" src="map/plug-in/scripts/bootstrap/bootstrap-select.js"></script>


//下拉框（代码）
function getlayerload(tcid){
$.ajax({ 
url:layerselurl,
 datatype:'jsonp',
 data:'',
 jsonp:'callback',
 async:false,
 jsonpcallback:"success_jsonpcallback",
 success:function(data){
 $("#"+tcid).empty();
 $("#"+tcid).append("<option>---请选择---</option>");
 $.each(data.bussinesstypes,function(i,o){
 var opt="";
 if(o.url){
 opt+='<option url='+o.url+'>'+i+'</option>';
 
 }else{
 opt+='<option url="">'+i+'</option>';
 }
 $("#"+tcid).append(opt);
 });
 $("#"+tcid).selectpicker('refresh');//动态加载
 },error:function(){
 }
});
}

<select class="selectpicker" id="selectpickers">
<option>---请选择---</option>
</select>