js验证：

<div><div id="errorDiv"></div><s:select id="type" name="type" list=""  headerKey=""  headerValue="请选择" listKey="masterindex"        listValue="mastervalue" οnchange="typeChange(this);"> </s:select>

<s:textarea id="content" name="content" cols="50" rows="6"  value="请输入内容"

        οnfοcus="if (value =='请输入内容'){value =''}" οnblur="contentLostFocus(this);"></s:textarea>

<a href="javascript:void(0);" οnclick="javascript:save();">提交</a>

</div>

<script type="text/javascript">

function save(){

 if(check()){   //save }}

//验证

function check(){  var typeObj = document.getElementById(type"); var contentObj = document.getElementById("content");  typeChange(contentObj); typeLostFocus(typeObj);

       contentMsg(contentObj);

       typeMsg(typeObj);

 var result = (result_type=="0")&& (result_content=="0");

    return result;}

//类型的验证

var result_Type = "";function typeChange(typeObj){  var typeId = DWRUtil.getValue("type"); if(typeId==""||typeId==0){   result_type="1"; }else{   result_type="0"; } typeMsg(typeObj);}

function typeMsg(typeObj){

 if(result_type=="0"){

  setMessage('',true,"",typeObj.value);

 }else{

  setMessage('',false,"请填写问题类型",""); 

 }

 typeObj.focus();

}

 

//内容的验证

var result_content = "";function contentLostFocus(contentObj){  clearElement(contentObj,"请输入内容"); if(contentObj.value==""){   result_content = "1"; }else{   result_content = "0"; } contentMsg(contentObj);}function contentMsg(contentObj){  if(result_content=="0"){   setMessage('',true,"",contentObj); }else{   setMessage('',false,"请输入内容","");  contentObj.focus(); }}

function setMessage(id,isRight,innerStr,defaultStr){

 var errorDivObj=document.getElementById("errorDiv");

  document.getElementById(errorDivObj.id).style.display = "block";

 if(isRight){

  document.getElementById(errorDivObj.id).innerHTML = "";

 }else{

  document.getElementById(errorDivObj.id).innerHTML = innerStr;

 }

}

function clearElement(obj,defaultStr){

 if(obj.value==defaultStr){   obj.value=""; }}</script>