I get that error when I pass the element name only !!
function getValue(form, optionName,hiddenValue) {
s = form.elements[optionName];
for(i = 0;i < s.options.length;i++) {
if(s.options[i].value == hiddenValue) {
s.options[i].selected = true;
break;
}
}
}
optionName is the element name and the error "elements.optionName is not null or an
object" when I try to use s.options.length...
Mark Lowe <[EMAIL PROTECTED]> wrote:
You can specify an index or the name of the element.
Likewise with the array of forms in the page.. Some folks prefer using
the
document.myform.myelement
syntax.
But you can use the element name also.
Cheers Mark
On Monday, October 20, 2003, at 03:14 PM, Jeff Kyser wrote:
> form.elements is an array, and you'd have to specify
> it by index:
>
> s = form.elements[i];
>
> where i was a supplied integer in the range 0..form.elements.length-1,
> or
>
> s = form.optionName;
>
> if 'optionName' was a valid name for a form element.
>
> HTH,
>
> -jeff
>
> On Monday, October 20, 2003, at 08:55 AM, Jacob Wilson wrote:
>
>> Thanks for the help Mark... when I do this, it says
>> elements.optionName is not null or an object... Any clue??? Thanks!
>>
>> Mark Lowe wrote:Those variable don't really
>> need to be global.
>>
>> function getValue(form, optionName,hiddenValue) {
>> s = form.elements[optionName];
>> for(i = 0;i < s.options.length;i++) {
>> if(s.options[i].value == hiddenValue) {
>> s.options[i].selected = true;
>> break;
>> }
>> }
>> }
>>
>> onsomeformevent="getValue(this.form,'foo','bar')"
>>
>> Cheers Mark
>>
>> On Monday, October 20, 2003, at 07:55 AM, Jacob Wilson wrote:
>>
>>> Thanks Matt... It sure helped...
>>>
>>> Actually, now, I tried to put it as a common function like...
>>>
>>> function getValue(optionName, hiddenValue) {
>>> var s = document.forms[0].optionName;
>>> for (var i=0; i> if ( s.options[i].value == hiddenValue ) {
>>> s.options[i].selected = true;
>>> break;
>>> }
>>> }
>>> }
>>>
>>> where optionName is the name of the selectboxes that r in the form --
>>> when I try to use 'optionName' it throws an error when I try to get
>>> the length saying option is null... Am I missing something here???
>>>
>>> Please let me know... Thanks in advance...
>>>
>>> -Jacob
>>>
>>> "Kruse, Matt" wrote:
>>>> This is a basic question... Can I find the index of a select box,
>>>> if I have the value or the text ???
>>>> document.formName.optionName.options["C"].selected=true
>>>> -- This won't work!!
>>>
>>> You need to loop through each option, checking to see it's value and
>>> then
>>> checking it.
>>>
>>> var s = document.formname.optionname;
>>> for (var i=0; i if (s.options[i].value=="C") {
>>> s.selected=true;
>>> }
>>> }
>>>
>>> Or, using functions at
>>> http://www.mattkruse.com/javascript/validations/ you
>>> can do:
>>>
>>> setInputValue(document.formname.optionname,"C");
>>>
>>> Be careful - multiple options are allowed to have the same value!
>>>
>>> Matt Kruse
>>>
>>>
>>>
>>>
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