Rails spinoffs - Dec 2007 - stuck on a css selector

Hi,
I have been struggling with a particular css selector and i thought
maybe someone here has the answer.  I''m trying to  hide tables whose
rows are already hidden.  I''ve tried several approaches, but i think
it comes down to the css selector.  Here''s the code.

var hidingtables = $$(''table tr[''style.display =
"none"''])
for (i=0;i<tables.length;i++)
{
  tables[i].style.display = "none";
}

am i on the right track?
~ Mike
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As far as the hidingtables variable:

var hidingtables = $$(''table tr[style*="display:
none"]'');

The * will allow it to still catch the needed rows even if they have
other values in their style.

As far as the loop, I don''t see where you have defined tables in your
example.

On Dec 5, 9:56 am, "MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Hi,
> I have been struggling with a particular css selector and i thought
> maybe someone here has the answer.  I''m trying to  hide tables
whose
> rows are already hidden.  I''ve tried several approaches, but i
think
> it comes down to the css selector.  Here''s the code.
>
> var hidingtables = $$(''table tr[''style.display =
"none"''])
> for (i=0;i<tables.length;i++)
> {
>   tables[i].style.display = "none";
>
> }
>
> am i on the right track?
> ~ Mike
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oops

var hidingtables = $$(''table tr[style*="display:
none"]'');
for (i=0;i<hidingtables.length;i++)
{
  hidingtables[i].style.display = "none";
}


But that $$ returns all rows.
i''m trying to loop through each table and check if every row in that
table is "display: none".  If every row is hidden, then hide that
table, otherwise leave the table alone.
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Odd, it worked for me in firefox with this as the table:

    <table>
            <tr style="display: none; background: red;">
                <td>One</td>
                <td>Two</td>
            </tr>
            <tr>
                <td>One</td>
                <td>Two</td>
            </tr>
            <tr style="display: none;">
                <td>One</td>
                <td>Two</td>
            </tr>
    </table>

If you don''t have an excessive amount of rows to traverse, you could
do the following:

$$(''table tr'').each(function(row){ if(row.visible())
{ row.hide(); }});

On Dec 5, 10:22 am, "MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> oops
>
> var hidingtables = $$(''table tr[style*="display:
none"]'');
> for (i=0;i<hidingtables.length;i++)
> {
>   hidingtables[i].style.display = "none";
>
> }
>
> But that $$ returns all rows.
> i''m trying to loop through each table and check if every row in
that
> table is "display: none".  If every row is hidden, then hide that
> table, otherwise leave the table alone.
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in other words,
that selector selects all rows with a "display: none" attribute.
but i need all tables whose rows are all "display: none"

i could probably do this with a nested loop, but there''s got to be a
better way :)
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that''s close, but It still doesn''t check whole tables.  it
iterates
through each row.  btw, i have ~ 700 rows spread across 26 tables
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Aren''t these two the same?

that selector selects all rows with a "display: none" attribute.
but i need all tables whose rows are all "display: none"

Can you post an example of a row?

On Dec 5, 10:47 am, "MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> that''s close, but It still doesn''t check whole tables. 
it iterates
> through each row.  btw, i have ~ 700 rows spread across 26 tables
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let me show you my example.
http://www.jottodesk.com/samples/pl_example.pdf
i''ve filtered the page to show only rows that match "ford" in
the
make.
Now I need to hide the tables that had no matches (i.e. tables with
all rows hidden)

thanks for helping me!  This message board is responsive.
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here''s a better picture of the page:
http://www.jottodesk.com/samples/pl_example.png
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$$(''table'').reject(function(table) {
  return table.select(''tr'').any(Element.visible)
})

The code is self explanatory - get all tables, then reject those that
have at least one visible row.
In other words collect all tables that have all rows hidden.

You could then do call .invoke(''hide'') on this collection to
hide them
all.
If we''re talking about many tables, I suggest
using .each(Element.hide) as it''s usually ~3x faster than invoke


Best,
kangax
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would a tr in the thead trip this up?  how can i tell it to ignore the
thead?
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figured it out.  add ''tbody'' to the select!
var htables = $$(''table'').reject(function(table){ return
table.select(''tbody tr'').any(Element.visible) });

On Dec 5, 1:29 pm, "MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<MiJ...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> would a tr in the thead trip this up?  how can i tell it to ignore the
> thead?
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