动态添加下拉框

html

<tr>
	<td class="zi" height="30">道路名称：</td>
	<td class="shuru" height="30">
	<select id="select_road" name="select_road" onchange="setRoadNum();">
	</select>
	</td>
</tr>

js

getRoadByOrg("1","#select_road");

var roadName = $("#select_road").find("option:selected").text();
var roadCode = $("#groupInfoRoadCode").val();

function getRoadByOrg(flag,tag,func){
	var orgcode = $("#select_orgName").val();
	if(orgcode!=null){
		orgcode = $("#select_orgName").val().replace("site","");
	}
	var opts = {
			cmd : "queryRoadbyOrg",
			roadByOrganization : {
				flag : flag,
				SUBC_ID : orgcode
			}
	};
	
	$.ajax({
		url:"../../meltSnow",
		data: $.toJSON(opts),
		type:"post",
		dataType:"json",
		success:function(data) {
		var result = data.result;
		var reason = data.reason;
		if("OK"==result){
			var seleceTag = $(tag);
			seleceTag.empty();
			seleceTag.append($("<option>").text("--全部--").val(""));
			if(data.roadByOrganizationList!=null){
				if(data.roadByOrganizationList.length>0){
					for(var i=0;i<data.roadByOrganizationList.length;i++){
						var option = $("<option>").text(data.roadByOrganizationList[i].ROAD_NAME).val(data.roadByOrganizationList[i].ROAD_CODE);
						seleceTag.append(option);
							if(typeof(func)=="function"){
								func();
							}
						}
					}
				}
			}else{
				alert(reason);
			}
		},
		error:function(msg){
			alert(msg);
		}
	});
}