Question

Preapring for a Facebook competition while I have spare time, the Publish function with facebook has a once posted javascript function that you can define.

What I am looking to do is call a function to write a value unto a php form which will then be posted and submitting data into a database. I have tested to the extent that I know the idea is sound just calling a basic alert, I am just not sure how to get from calling the function to writing the value into the form.

This value I need to be able to call on in the page that the data is being posted to, to base an “if function” off, basically if “True/Yes” then I need it to process another php script in addition to the data its posting to the database

What I have now is:

  <script type="text/javascript">
    function isShared()
    {
    alert("Yes");
    }
  </script>
<input class="fieldbox" name='shared' type='hidden' value="value of 'display_alert()'"/>

I know it cannot be an alert, but this is pretty much where my current javascript skills leave me stranded.

Answer 1

<script type="text/javascript">
function isShared()
{
    document.getElementById('xshared').value = 'Yes';
}
</script>
<input class="fieldbox" id="xshared" name="shared" type="hidden" value="" />

This will add the value Yes To the hidden field once isShared is called.

Are you looking to have the form automatically posted without the user clicking anything but the share button? The only reason I ask is that it sounds like what you are looking for is AJAX, to post data to the database silently without the need of the user to navigate away from their current page.