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I have a php script with an array which loops through months and displays them in a drop down. I want to get the selected value from the drop down using javascript.

function month_list()
{
 $months = Array("January", "February", "March", "April", "May", "June", "July", 
 "August", "September", "October", "November", "December");
 echo '<select name="month" id="month_list" OnChange="getvalue();">'; 
 foreach ($months as $months => $month)
 {
 echo'<option OnChange="getvalue();" value='.$month.'>'.$month.'</option>';
 }
 echo '</select>';
}

Javascript:

 <script type="text/javascript">
 function getvalue()
 {
 alert(document.getElementById((month_list)).value); 
 }
</script>

Nothing happends when I select a value but in firebug I get the error:

Element referenced by ID/NAME in the global scope. Use W3C standard document.getElementById() instead.

Any advice?

Thanks.

asked Sep 22, 2010 at 20:14

2 Answers 2

1

You forgot to quote month_list.

 document.getElementById("month_list").value

Also you don't need the onchange (that's all lowercase btw) attributes on the individual options, just on the select element.

answered Sep 22, 2010 at 20:17
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1 Comment

Thanks ! Oh yeah I forgot I left that part in :)
1

Use 

function getvalue()
{
alert(document.getElementById('month_list').value); 
}
</script>

Instead.

Also, you can remove the onChange on each of the options, the select will do :)

answered Sep 22, 2010 at 20:18

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