populate checkboxes w/ url string

[skalooky]

I'm using several checkboxes to populate an array and would like to 'check' them automatically by using a url string. Is this possible? For instance, a user has several link choices:

link A gets clicked and automatically fills in checkbox A on the next page

link B gets clicked and automatically fills in checkbox B on the same following page

My form fields are like so:

<input type="checkbox" name="selected_group[]" value="2">Link A<br>
<input type="checkbox" name="selected_group[]" value="3">Link B<br>

Any thoughts on a URL string to fill these in?

[calevans]

Try:

<input type="checkbox" name="selected_group[]" value="2" <?PHP if(condition){echo "CHECKED";?>>Link A<br>
<input type="checkbox" name="selected_group[]" value="3" <?PHP if(condition){echo "CHECKED";?>>Link B<br>

HTH,
Cal

Cal Evans
- Senior Internet Dreamer
- Techno-Mage
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http://www.calevans.com
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[vsego]

<input type="checkbox" name="selected_group_1" value="2"><a href="#" onClick="document.selected_group_1.checked = 1 - document.selected_group_1.checked;">Link A</a><br>

Not sure how to do it with names like selected_group[]. You'd probably have to access these by index somehow.

[skalooky]

Thanks guys,

Cal-That is an interesting idea. My thinking was that if I could fill in a text field by appending the ?var=x to the URL string, why not pass a var for the checkbox. I tried directly sending 'checked' as the value for the one of the array elements and could not get it to function.

[calevans]

Nope, that would not work.

You could pass in CHECKED and then use JavaScript to check it and set the checkbox if you wanted to.

But there's no way to pass in a value (that I know of) to automatically check a checkbox. Because a check box has a value property and a CHECKED value.

Cal Evans
- Senior Internet Dreamer
- Techno-Mage
- Last of the great Internet Burma-Shave poets.
http://www.calevans.com
*

[vsego]

Cal Evans wrote: "But there's no way to pass in a value (that I know of) to automatically check a checkbox. Because a check box has a value property and a CHECKED value."

How about reading my answer? :-)
(I thought he wanted to simulate Windows' checkbox behaviour - (de)checking when clicked on box OR TEXT).