- From: Ian Hickson <ian@hixie.ch>
- Date: Tue, 15 Aug 2006 10:27:24 +0000 (UTC)
On Mon, 24 Jul 2006, Ric Hardacre wrote: > > When using checkboxes in forms i find myself doing this > > <input type="checkbox" name="foo" value="true"> > <input type="hidden" name="foo" value="false"> > > and retrieving the value from the posted form data a bit like this > > if( checkbox.value == "false" )then > bSomeBool = false; > else > bSomeBool = true; Michel then pointed out that this is particularly important when you don't know which form controls were submitted. You can already do all this. Just use a type="hidden" control to list the controls that were included: <input type="checkbox" name="foo"> <input type="hidden" name="present" value="foo"> Then, check to see if "present" has the value "foo" (amongst others), and if it does, handle "foo.checked". For cases where you have tables, and each row represents a record with multiple controls, just have one hidden control per row, indicating the row is present. This is better than a solution for checkboxes, because it works for other controls too, like <select>s, which might not submit a value, or disabled text controls, which wouldn't submit a value either. HTH, -- Ian Hickson U+1047E )\._.,--....,'``. fL http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,. Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
Received on Tuesday, 15 August 2006 03:27:24 UTC