Hello again!
I solved my problem by following Zammetti's suggestion. Thank you all very much
for your thoughts. My solutions as following. Hope it helps newbies like myself.
Thanks,
Catherine
JavaScript functions:
// alert user if the new attribute already exists
function checkNewAttribute() {
var theForm = document.forms[0];
if (theForm.submitAction.value == "Add Attribute") {
//comment out for clarity
//1. check empty selection
//2. check redundant attribute
if redundant
return(false);
else
return(true);
}
// set value for the hidden field "submitAction"
function setSubmitAction(target) {
document.forms[0].submitAction.value = target;
}
In JSP:
<html:form action="myAction" onsubmit="return checkNewAttribute()">
...
<html:submit onclick="setSubmitAction('Add Attribute')">Add
Attribute</html:submit>
<html:submit onclick="setSubmitAction('Save')">Save</html:submit>
<html:submit onclick="setSubmitAction('Commit')">Commit</html:submit>
<html:hidden property="submitAction" value=""/>
</html:form>
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