Here's how i'd start doing it.
function NestedFields(form){
this.form = form;
this.field_sets = []
}
NestedCounter.prototype = {
add_field_set: function(field_set) {
this.field_sets.push(field_set);
},
count: function(){
return this.field_sets.length()
},
}
when you initialize the page, pass the dom element of the form to the
constructor.
var some_form = document.getElementById('form_id');
var nest_o_tron = new NestedFields(some_form);
then you don't rely on your dom to hold the state, you have a js object that
does this.
call nest_o_tron.add_field_set(your html) from whatever's doing the building;
and nest_o_tron.count() gives you the current count;
On Thursday, June 28, 2012 at 4:39 PM, Chris McCann wrote:
> SD Ruby,
>
> I'm struggling with a Javascript issue that I'm hoping one of you gurus can
> help with.
>
> One of my forms has a JS link that adds additional fields to the form for a
> nested form attribute. There's also a hidden field that should have an
> incrementing number in it that will increment for each additional set of
> nested fields that's added.
>
> I can't sort out how to keep a JS var to hold the "next" increment number and
> to set the hidden field value to that value when the new nested fields are
> added.
>
> Any suggestions?
>
> Thanks,
>
> Chris
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