[RESOLVED] Check box check or uncheck do something

**Dasher** · 01-24-2010 11:38 AM

I have a form where if I check a particular check box it sets an input form to some value, today's date. I have tried unsuccessfully to have it clear the field if I uncheck the checkbox. My javascript skills are limited

Code:

function outdate()
{
if (document.getElementById("outc").value == "on"){
document.getElementById("dp").value = "<?php echo $today; ?>"; }
else{ document.getElementById("dp").value = ""; }
}

<body>

PHP Code:


<?php
if ($out == 1) {$ck1 = "checked";}else{$ck1 ="";}
echo "<INPUT type= 'checkbox' ".$ck1." id='outc' onclick='outdate()' name = 'out'>";
echo "<input type='text'  size='9' name='date_paid' id ='dp' value ='".$a_row['Odate']."'>";
?>

</body>

**Dasher** · 01-24-2010 12:43 PM

Just to clarify the script sets the field fine. It just won't clear it. Evidently I am not properly getting the checked / not checked status.

**Vince616** · 01-24-2010 07:26 PM

Hi bud

You are trying to check the value of the checkbox but you haven’t set it to anything which means that it will never evaluate to true

You need to check the “checked” parameter of the checkbox which will evaluate to either true or false depending on whether you set it or not

Code:

     function outdate(){
         if(!document.getElementById("outc").checked){
           document.getElementById("dp").value = ""
                                                    }
         else{
           document.getElementById("dp").value = "22/01/10"
             }
                        }

V

**Dasher** · 01-24-2010 09:40 PM

Vince616 Thanks for the reply, but that does not seem to work either.

Missing something somewhere.

**JMRKER** · 01-24-2010 09:53 PM

Originally Posted by Dasher

Vince616 Thanks for the reply, but that does not seem to work either.

Missing something somewhere.

What's wrong with it? What error are you getting?

**Dasher** · 01-24-2010 10:51 PM

OKb- It works. The problem was in another Javascript function. Fixed that and then this one worked fine.

Thanks guys.... Firebug does help

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