[development] How can I refer to the shopping cart using document.getElementById if it does not have an id?

Tue Feb 1 00:01:50 UTC 2011

I tried all 3 of the previous email suggestions in order get access to DOM
objects within my .js file:

a.) Drupal behaviors:  i.e. Drupal.behaviors.foo = function()
{alert($(".pane-uc-cart-0").html());};
b.) $(document).ready: i.e.
$(document).ready(function(){alert($(".pane-uc-cart-0").html());});

c.) By adding the .js file to the footer instead of the default of header:
i.e. drupal_add_js(drupal_get_path('module', 'product_type') .
'/js/shopping_cart_info.js', 'module', 'footer');
and then calling the alert statement within the .js file like was already
done within the "A" and "B" examples: i.e.
alert($(".pane-uc-cart-0").html());

After clicking the "add to cart" link (i.e.
https://mydomain/cart/add/p110_a2o09-24-100-001) then hook_cart_item is
executed which includes the .js file which is executed which does a number
of things including calling the alert statement.
For all three of the above the alert statement was not even executed.  If I
just added the .js file to the header like I had done previously then the
alert statement executes but it returns null.
In looking at firebug within firefox I noticed that both
https://mydomain/cart/add/p110_a2o09-24-100-001 and
https://mydomain/cartrequests completed but all the other ones after
that did not complete (i.e.
https://mydomain/modules/node/node.css?x).  So I guess because these other
requests never completed which means that the rest of the DOM never loaded.
So if the .js file is at the footer or waiting for the DOM to complete the
alert statement would not execute.

Is their any way that I can get these requests to complete?

Thanks,

John

On Fri, Jan 28, 2011 at 12:15 PM, Carl Wiedemann
<carl.wiedemann at gmail.com>wrote:

> jQuery ships with Drupal. Use class-based selectors
> http://api.jquery.com/category/selectors/
>
> alert($(".pane-uc-cart-0").html());
>
> However, if you are adding JS 'inline' it is added to the <head> which
> executes before the rest of the DOM is loaded and so you won't get any
> response. Use $(document).ready(function(){ ... }); or Drupal.behaviors.foo
> = function() { ... } instead, or simply add it to the footer.
>
>
> On Fri, Jan 28, 2011 at 9:34 AM, John Mitchell <mitchelljj98 at gmail.com>wrote:
>
>> I am trying to get the id for the drupal shopping cart widget so that I
>> can refer to it within javascript.  When I look at the shopping cart div
>> within firebug (see below) it only lists the class and not the id and I
>> tried referring to the class like it was the id but it was not recognized
>> (i.e. drupal_add_js('alert(document.getElementById("panel-pane pane-block
>> pane-uc-cart-0").value)','inline');
>> ).
>>
>> <div class="panel-pane pane-block pane-uc-cart-0">
>>
>> How can I refer to the shopping cart using document.getElementById if it
>> does not have an id?
>>
>> --
>> John J. Mitchell
>>
>
>

-- 
John J. Mitchell
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