JSP Form question

BizzyC

Hey,
have a problem with a page I'm trying to develop.

Is there any way to assign the current value of a form object, ie text or selected option to a variable defined in the same JSP before it's submitted.

I'm designing in Struts, and I already have a FormBean ready, but I want to use the selected values on the page, before the user submits.

Cheers.

full forward

Use javascript. eg

<SELECT name="mySelect" onChange="myfunction();">
<option value= .......
</SELECT>

<script>
function myfunction()
{
thatbox = document.forms[0].mySelect;
alert('you selected ' + thatbox.value);
}
</script>

BizzyC

I've tried the javascript aproach, but it wont work as I cant assign a name to the select tag.
It causes a conflict with the struts actionform bean.

Is there anyway I can use the formbean values before they are submitted?

BizzyC

Got it working. Stopped using the <HTML:Select> tag, so i was able to name the field.

lynchie

You should really be using the <html:select/> tags as they are reduce the amount of code you have to write.

What do you mean you cant assign a name to the select tag? You should never assign a name to it, as struts uses the names for automatic form bean population from the request. Use id tags instead.

e.g.

<html:select property="selectedCountry" styleId="countryId" onchange="changeCountry();">
<html:optionsCollection property="countryList" value="countryId" label="countryName" />
</html:select>

then use getElementById() to get the object instead