//须引入jquery和以下<link rel="stylesheet" type="text/css" href="jquery.editable-select.min.css"/><script type="text/javascript" src="jquery.editable-select.min.js"></script><select class="form-control" name="entity.contractCode" id="contractCode" value="${entity.contractCode}"> <s:iterator value="contractCodeList"> ???<s:if test="not empty entity.contractCode"> ???????<option value="${entity.contractCode}" selected>${entity.contractCode}</option> ???</s:if> ???<s:else> ???????<option value="${value}">${value}</option> ???</s:else></s:iterator></select>setSelectedOption("#contractCode",contractCode);$(‘#contractCode‘).editableSelect({ ???effects: ‘slide‘, ???//可选参数default、fade ???filter: false,// 不过滤，否则选中后其它选项消失});function setSelectedOption(selector, value){ ???if (value.length !=0) { ???????$(selector +" > option[value=‘"+value+"‘]").attr("selected",true); ???}}可输入下拉框，jquery.editable-select
原文地址：https://www.cnblogs.com/vixviy/p/8985759.html