AW: AW: [Javascript] addin <input fields> via visibility or similar?

[mdougherty at pbp.com (Mike Dougherty)]

I just re-read that - there should only be ONE element returned using getElementById() - by 
definition, there can only be a single element with a unique ID.  I pasted your example into mine, 
but it probably should be a collection-returning method like getElementsByTagName() or 
getElementsByName()

On Mon, 26 Sep 2005 09:01:56 -0400
  "Mike Dougherty" <mdougherty@xxxxxxx> wrote:
> var loMyCol = document.getElementById("products_id[]");
> var lnCount = loMyCol.length;
> 
> On Mon, 26 Sep 2005 11:56:07 +0200
>  "Michael Borchers" <borchers@xxxxxxxxx> wrote:
>> Michael Borchers wrote:
>>> 
>>> beautiful, this works so far.
>>> the name for the inputs will be something like
>>> products_id[X][products_price]
>>> 
>>> how can i count how many rows (X) there are already?
>> 
>> Triche wrote:
>>>If by "rows" you mean extant INPUT tags, use getElementsByTagName, then 
>>>loop through and count up the ones that match the stable portion of your NAME attribute.
>> 
>> how exactely do i count through? javascript doesn't have a simple
>> count function for that or? :(
>> 
>> a simple
>> var ordersNumRows = count(document.getElementById("products_id[]"));
>> 
>> would have been nice;)
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