ansaurus

Question

Including JavaScript validation in a form submit in PHP

Answer 1

+5 A:

If return false in the onsubmit handler, the form will not submit, if you return true, it will.

You should make the function VerifyFields return true or false, and call it like this:

onsubmit="return VerifyFields();"

BC 2010-02-11 23:40:16

@o.k.w this will always return false so you can never submit .. regardless of the verification result..

Gaby 2010-02-11 23:47:11

@Gaby, my bad, what was I thinking? Btw, deleted my comment.

o.k.w 2010-02-12 05:06:58

Answer 2

+1 A:

<script type="text/javascript">
   function validateForm(){
   ...
   }
</script>

<form name="contact" action="<?=$_SERVER['PHP_SELF']?>" 
    method="post" onsubmit="return validateForm();">
        <label> Foo </label>
        <input type="text" class="txt_input" name="sender_name" />
        ...
        <input type="image" src="img/send.jpg" id="submitButton" 
           name="submitForm" value="send" />
</form>

mre 2010-02-11 23:44:57

Answer 3

A:

I would test the inputs bevor submitting any fields to the server. I would test it client side by javascript and finaly send it to the server. You could call Your script also this way.

<input type="text" class="txt_input" name="sender_name"  onchange="validateForm();" />

streetparade 2010-02-11 23:54:49

So an alternative to using on submit, jus' triggering off of the final field. Doesn't totally degrade gracefully (e.g. if you put a cursor in a different field and hit enter, the form will still submit still without any validation. If you were to change that to `onchange="validateField();"` then it might make more sense.

Tchalvak 2010-02-12 00:23:45

ansaurus

tags:

views:

answers:

Including JavaScript validation in a form submit in PHP

Update:

related questions