根据值设置select的选中项

$('.selector').attr("checked", true);

            <s:iterator value="jobSelect" id="jobLink2">
                  <s:iterator value="jobLink2" id="job2">                
                  var arr = $('.selector');
                  var a = ${job2.id};
                  $('.selector').each(function(){
                   
                     if($(this).val()== ${job2.id}){
                       $(this).attr("checked", true);
                     }
               });
                 </s:iterator>
            </s:iterator>

AJAX绑定Select下拉框的选项：

方法一：

<select id="TypeStr" />

     function BindDropDownList() {
            $("#TypeStr").html("");
            $.getJSON("NoticeHandler.ashx?bz=BindDropDownList", null, function (json) {
                $.each(json, function (i,val) {
                    $.each(val,function(){
                        var a = this.id + this.typestr;
                        $("#TypeStr").append($("<option></option>").val(this.id).html(this.typestr))
                    })
                });
            });
            $("<option></option>").val("").html("").appendTo("#TypeStr");
        }

获取选中的文本值：

var selT = $('#TypeStr option:selected').text();

context.Response.Write(EDU.COMMON.PublicMethod.userjsondata("select * from ERPGongGaoType order by orderby "));

备注：

 //StringBuilder sb = new StringBuilder();
                //DataTable dt = new DataTable();
                
                //if (dt == null)
                //    return;
                //if (dt.Rows.Count == 0)
                //{
                //    return;
                //}
                //else
                //{
                //    sb.Append("[");
                //    for (int i = 0; i < dt.Rows.Count; i++)
                //    {
                //        sb.Append("{"ID":"" + dt.Rows[i]["ID"].ToString() + "","Name":"" + dt.Rows[i]["Name"].ToString() + "","Age":" + dt.Rows[i]["Age"].ToString() + ","Tel":"" + dt.Rows[i]["Tel"].ToString() + ""},");
                //    }

                //    sb.Remove(sb.Length - 1, 1);
                //    sb.Append("]");
                //}

                //context.Response.ContentType = "application/json";
                //context.Response.ContentEncoding = System.Text.Encoding.UTF8;
                //context.Response.Write(sb.ToString());

方法二：用LigerUI:

var type=<%=EDU.COMMON.PublicMethod.GetSelectJson(EDU.DBUtility.DbHelperSQL.GetDataTable("SELECT id,typestr as text FROM [ERPGongGaoType] order by orderby")) %>;

typeS = $("#TypeStr").ligerComboBox({
data: type,
});

//获取值

if(typeS != null){
var selT = typeS.getText();
if (selT != "") {
where += " And TypeStr = '" + selT + "'";
}
}