用js动态添加select标签的option

js代码：

var featureLayerURLTest=[["http://192.168.15.174:6080/arcgis/rest/services/Sample/GQYDGH/FeatureServer/0","线图层1"]];function createSelectOption(featureLayerURLTest){    var _html="";    for(var _i=0;_i<featureLayerURLTest.length;_i++){        _html=_html+"<option value='"+featureLayerURLTest[_i][0]+"'>"+featureLayerURLTest[_i][1]+"</option>";    }    $("#featureLayerOptions").append(_html);    var html=$("#featureLayerOptions");    //console.log(html);}$(function(){    createSelectOption(featureLayerURLTest);});

html代码：

<div>    <lable>选择操作图层:</lable>    <br/>    <select id="featureLayerOptions">        <option id="defaultOption" value="0">            请选择操作图层        </option>    </select></div>