兼容ie select option 显示隐藏

<select name="fatherselect" id="fatherselect" class="sps-ui-select fathercategory">     <option data-categoryid="" name="fatherfirst" value="">一级分类</option>     <option value="" data-categoryid="1">五险一金</option>     <option value="" data-categoryid="2">企业服务</option>     <option value="" data-categoryid="3">员工服务</option> </select> <select name="childselect" id="childselect" class="sps-ui-select"> <span style="white-space:pre"> </span><option pid="" data-categoryid="" name="childfirst" value="">二级分类</option> <span style="white-space:pre"> </span><option value="" class="pid pid1" data-categoryid="5" style="display: none;">社会保险服务</option> <span style="white-space:pre"> </span><option value="" class="pid pid1" data-categoryid="6" style="display: none;">公积金服务</option> <span style="white-space:pre"> </span><option value="" class="pid pid2" data-categoryid="7" style="display: none;">社保账户服务</option> <span style="white-space:pre"> </span><option value="" class="pid pid2" data-categoryid="8" style="display: none;">公积金账户服务</option> <span style="white-space:pre"> </span><option value="" class="pid pid3" data-categoryid="9" style="">社保日常服务</option> <span style="white-space:pre"> </span><option value="" class="pid pid3" data-categoryid="10" style="">公积金日常服务</option> </select>

//将option序列到数组中var childselectAry = $("#childselect option.pid").map(function(){return $(this).context.outerHTML}).get();//父级变化触发事件$("#fatherselect").on("change",function () { $father = $("#fatherselect").find("option:selected"); if($father.attr("data-categoryId") != ""){//标准浏览器处理方法 $("#childselect option[name='childfirst']").show(); $("#childselect").removeAttr("disabled"); var pid = $father.attr("data-categoryId"); $("#childselect option.pid").hide(); $("#childselect option.pid" + pid).show(); //ie8浏览器处理方法 if(isIE){   $("#childselect option.pid").remove()   for (key in childselectAry){   if(childselectAry[key].indexOf("pid"+pid)> -1){   $("#childselect").append(childselectAry[key])   }   } }else{//父级选中默认选项操作 $("#childselect option.pid").hide(); $("#childselect option[name='childfirst']").prop("selected", true); $("#childselect").attr("disabled","true"); } }) function isIE() { //ie?       if (!!window.ActiveXObject || "ActiveXObject" in window)           return true;       else           return false;   }