Question

Here’s my code – I am getting an error in my firebug console that document.getElementById(‘deletebutton’).value is null.

EDIT: To explain what I want – I want code to execute if one of two submit buttons is pressed – this is code to determine whether it was the delete button that was pressed (if not, it should have a null value) and it will execute certain code. Whenever I try to use this though, I keep getting the error message “‘deletebutton’ is null.

Here’s the HTML:

<button type="submit" name="del" id="deletebutton" value="'.$org.'">Delete</button>

How do I account in my program for this? I set it to ”, but I believe null would be a better option. Would I do:

if (document.getElementById('deletebutton').value != null

?

Here’s the actual code:

<script type="text/javascript">
    //<![CDATA[

function formValidation() {

var ids = ["orgname", "cultpicklist", "catpicklist", "servpicklist"]
    formValue = 1;

    if (document.getElementById('deletebutton').value != '' && document.getElementById('orgname').value === "") {
      formValue = 0;
    }
else {
for (var i = 0, len = ids.length; i < len; i++) {
    if (document.getElementById(ids[i]).value === "") {
       formValue = 0;
       break;
    }
}
}

 if (formValue == 1) {
           return true;
      } else if (formValue == 0) {
           alert('Please fill out all required fields');
           return false;
      }
}
//]]>
    </script>

Answer 1

I can’t quite understand your code very well, because the HTML part is missing.
it’d be great if you could provide a jsfiddle or something similar in order to have a more accurate portrait of your situation.

Anyhow, I believe that if you just want to test the existence of the item with id “deletebutton” probably you could try something like

if( document.getElementById('deletebutton') != null )