PHP, JS, and the select tag

[Anon]

Hi,

First PHP project here.

I have a list of fields for a sql query, and I want the user to be able to pick any number of them. I want an "All" button next to it that will select all the elements of this list box. So I wrote this little JavaScript function.

function selectAll(object) {

for (i = 0 ; i < object.length ; i++) {
object.options.selected = true;
}
}

Then if list is the name of your listbox,

<input name="all" type="button" onClick="selectAll(this.form.list)">

should do the trick.

The trouble is...to make PHP recognize the listbox as taking array values, it needs to be
<select name="list[]">...</select>. But JavaScript complains about the brackets.

Surely somebody has come across this before?

Thanks for any help.

--Matt

[Anon]

Yes I have this problem too and
have found it to be very frustrating.

One thing to try, when reference the element
on the form in javascript
use the elements array that is a property of a form
and has an entry for any element that appears on the form.

use:
this.form.elements['list[]']

or use:
this.form.elements['elem_name']