ajax 级联

<select id="model_type" name="modelType" class="form-control" style="width:157px;" onchange="modelParams(this.value);" >
<option value="-1" >请选择</option>
<option value="0" >短信模板</option>
<option value="1" >邮件模板</option>
</select>

 

function modelParams(value){
if(value!=null && value.length>-1){
$.ajax({
type:"POST",
url:"${ctx}/model/testCtrl/getModelList?modelCode="+value,
success:function(data){
var optionDom = "<option value='-1'>---请选择---</option>";
$.each(data,function(index,item){
optionDom += "<option value='"+item.code+"'>"+item.name+"</option>";
});
$("#modelId").html(optionDom);
}
});
}else{
$("#modelId").html("<option value='-1'>---请选择---</option>");
}
}