jsp_strusts2 下拉框的取值赋值 和选中
<tr><td align="right">所属广告类别</td><td colspan='1'><select id='paid' name='paid' style='width: 150px'></select> </td></tr>?
<script type='text/javascript'>function AddSelectOption( selectElement, optionText, optionValue ,optionSelect){var oOption = document.createElement('OPTION') ;oOption.text= optionText ;oOption.value= optionValue ;oOption.selected = optionSelect;selectElement.options.add(oOption) ;if(optionSelect=='selected')selectElement.value=optionText;return oOption ;}${selectOptions}</script>?public class Constants {public final static String SELECTOPTIONS = "selectOptions";?}?// 获取所属广告的类别 Pageadvert pa = new Pageadvert();List paList = pageadvertManager.getList(null);if (paList.size() != 0) {List<String> selectList = new ArrayList<String>();for (int i = 0; i < paList.size(); i++) {pa = (Pageadvert) paList.get(i);String id = pa.getId();String name = pa.getName();String val = name + "," + id;selectList.add(val);}String messages = (String) getRequest().getAttribute(Constants.SELECTOPTIONS);if (messages == null) {messages = "";}String obj = JsUtils.addSelectOptions("paid", null, selectList);messages += obj;saveRequest(Constants.SELECTOPTIONS, messages);}?/** * 为select下拉框赋值 BYList * @param filedName 字段名称 如 paid * @param list 存放String 格式 list.add("生活广告,life");list.add("服务广告,service"); * @return */public static String addSelectOptions(String filedName,String selectedValue, List<String> list){StringBuffer sb = new StringBuffer();for (String str : list) {String[] vals = str.split(",");String selected = "";sb.append(addSelectOption(filedName,vals[0],vals[1],selected));}if(StringUtils.isNotEmpty(selectedValue) ){sb.append(setSelectedOption(selectedValue,filedName));}return sb.toString();}/** * 为select下拉框赋值 * @param filedName 字段名称 * @param lable 显示名称 * @param value 字段值 * @param selected 是否被选择 * @return */public static String addSelectOption(String filedName,String lable,String value,String selected){return "AddSelectOption(document.all."+filedName+",'"+lable+"','"+value+"','"+selected+"');\n";}/** * 设置下拉框选择的值 * @param value 字段值 * @param filedName 字段名称 * @return */public static String setSelectedOption(String value,String filedName){return "SetOptionSelected('"+value+"',document.all."+filedName+");\n";}