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

[Michael Borchers]

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;)