select

<select class="form-control" id="IllegalTimeInterval" name="IllegalTimeInterval">
<option value="0"></option>
<option value="1">每1个小时展示</option>
<option value="2">每2个小时展示</option>
</select>

 $("#IllegalTimeInterval").val(data.Result.IllegalTimeInterval);

//多选框,去掉multiple可以改造成单选框，这个select引入chosen会有搜索效果

<div class="col-sm-8"> 
<select class="multiselect form-control" multiple="multiple" id="EventType" name="EventType">
<option value="">请选择</option>
</select>
</div>

$("#EventType").chosen({
 "100%",
no_results_text: "没有匹配结果",
placeholder_text: "请选择事件类型",
search_placeholder: "事件类型"
});

EventTypeForm = function () { //初始化时执行一次，给select下拉框动态赋值
$.ajax({
type: "get",
url: "/api/Common/DictManager/GetDictByDictTypeID",
data: { "id": "1013" },
dataType: "json",
success: function (data) { 
if (data.HasError) {
console.log(data.HasError);
return;
} else {
$laneSelect = $('#EventType').empty();
var temp = '<option value="{0}">{1}</option>';
for (var j in data.Result) {
$(temp.format(data.Result[j].DictionaryNo, data.Result[j].Value)).data('src', data.Result[j]).appendTo($laneSelect); 
}
$("#EventType").trigger("chosen:updated");
}
}
});

},

 select获取option文本值

单选

var s = $("#EventType").find("option:selected").text();

$('#EventType option:selected').text();//选中的文本

$('#EventType option:selected') .val();//选中的值

$("#EventType ").get(0).selectedIndex;//索引

多选

var productArray = new Array();
$.each($("#EventType").find("option:selected"), function(index, obj) {
productArray.push($(obj).text());
});
$.each($("#EventType").find("option:selected"), function(index, obj) {
productArray.push($(obj).text());
});

var productStr=productArray.join(",");