i am not sure, if i got u right. but i will give a try. check out the code below
<s:form action="action">
<sj:textfield name="name" value="value" label="label/>
<sj:submit targets="myResultDiv"/>
</s:form>
<div id="myResultDiv"></div>
after you submit the form, the result should be appeared in the div with id "myResultDiv", check out the struts2 jquery plugin page strut2-jquery-plugin-showcase
EDIT 1
<s:form id="myForm" action="action">
<sj:textfield name="name" value="value" label="label" onChangeTopics="changeTopic"/>
</s:form>
<div id="myResultDiv"></div>
<script>
$.subscribe('changeTopic', function(event, data) {
var ui = event.originalEvent.ui;
if(ui.item) {
$('#myResultDiv').html('<p>'+message+'</p>');
}
});
</script>