Drop-down selection using java script

We have a search criteria drop-down and a textbox to enter the value. When user selects a value from the drop-down, JS will request the user to enter a value in the textbox.


JSP Page

<html:select size="1" property="searchCriteria" name="RequestForm" styleClass="rmt-formTxt" style="margin-right:6px;">
<html:option value="">Search Criteria</html:option>
<logic:present name="RequestForm" property="searchDropList">
<bean:define id="row" name="RequestForm" property="searchDropList" />
<html:options collection="row" property="code" labelProperty="display" />
</logic:present>
</html:select>

<html:text name="RequestForm" size="30" property="searchCriteriaText" style="margin-right:6px;" styleClass="rmt-formTxt" />
<input type="button" id="search" value="<bean:message key="common.btn.search" bundle="abc"/>" class="primaryButton" onClick="normalSearch();" />
<input type="button" id="" value="<bean:message key="common.btn.clearSearch" bundle="abc"/>" class="secondaryButton" onClick="clearNormalSearch();" />

In this JS code we are getting the value(number) of the drop-down and the corresponding text.

JS Function

Explanation:

searchType is a form property with which we set the search type, whether it is a normal search (or) advanced search.

function normalSearch()
{
var searchCriteria=document.forms[0].searchCriteria.value;
var searchCriteriaValue=document.forms[0].searchCriteriaText.value;
var index;
index = document.forms[0].searchCriteria.selectedIndex;
var display = document.forms[0].searchCriteria.options[index].text
if ((searchCriteria == "") (searchCriteria == null))
{
alert("Please select a criteria for search");
document.forms[0].searchCriteria.focus();
return;
}

else if ((searchCriteriaValue == "") (searchCriteriaValue == null))
{
alert("Please enter some value for "+display);
document.forms[0].searchCriteriaText.focus();
return;
}
else
{
var searchType = document.forms[0].searchType;
searchType.value='normal';
document.forms[0].action='viewRequestResults.do';
document.forms[0].submit();
}
}

function clearNormalSearch() {
document.forms[0].searchCriteria.value = "";
document.forms[0].searchCriteriaText.value = "";
}