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Passing this.value into php function whilst setting image source

Hi,

I am trying to change an image source when the user selects from a drop down box in a form on a web page, but I cannot get the syntax correct.

The following works fine if I set $eventpic earlier on in the code. but what I really want to do is change $eventpic to this.value, ie the selected value in the combo box. Any ideas would be gratefully received.

<select class='input-box' name='myeventtypeid' onChange='if(this.selectedIndex!=0){document.getElementById("theImage").src="<?php echo retrieve_pic($eventpic);?>";}'>

Phatzer

<?php echo retrieve_pic(?>document.getElementByName("myeventtypeid")<?php );?>

Not sure if that would work, but worth trying, and I'll look in to it.

Phatzer

That last one will definately not work, but this may be worth a try:

<?php echo retrieve_pic(?>document.getElementByName(\"myeventtypeid\").value<?php);?>

You may need to add spaces between the ..( and ?..., and the ...php and )...

hollydalby

ASKER

Hi - thanks for helping - I tried this and get the following error:

Parse error: parse error, unexpected ';', expecting ')'

Thanks,
Holly

Phatzer

Try again but put speech marks (") between ( + ? and php + )

hollydalby

ASKER

Hi - new line looks like:
<select class='input-box' name='myeventtypeid' onChange='if(this.selectedIndex!=0){document.getElementById("theImage").src="<?php echo retrieve_pic("?>document.getElementByName(\"myeventtypeid\").value <?php ");?>";}'>

Page is displaying now, but image is not being found..

Phatzer

It may actually be getElementsByName

Try that, or alternatively, assign an ID to the select box and use getElementByID(\"selectboxid\") instead.

hollydalby

ASKER

Hi - tried both suggestions, code now looks like:

<select class='input-box' name='myeventtypeid' id='myeventtypeid' onChange='if(this.selectedIndex!=0){document.getElementById("theImage").src="<?php echo retrieve_pic(" ?>document.getElementByID(\"myeventtypeid\").value <?php ");?>";}'>

Still not gettting the image displayed..

Aaah!!

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Phatzer

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hollydalby

ASKER

Thank you for all your help so far, I'll have another look at getElementById in the morning. Thanks again, Holly