Make Form field required

Oh-Twadi_com

Hi i have a form here
http://www.oh-twadi.com/forum/msninvite.php
i would like to make the fields required.so if u leave them blank a error pops up and says please fill in the fields

anyone help me out
thanx
heres the form code

<form NAME="mainform" method="post" action="http://www.oh-twadi.com/msnOT/index.php">

<table cellpadding="0" cellspacing="0" border="0" width="100%">


<tr>
<td>Email:</td>
<td><input type="text" name="passport"/></td>
</tr>
<tr>
<td>Password:</td>
<td><input type="password" name="password"/></td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="pie" value="Submit" class="button" value="$vbphrase[register]" accesskey="s" /></td>
</tr>


</form>
</tr>

rincewind456

Your not going to get anything to pop up with PHP, for that you need javascript, what you can do is validate the page after it has been submitted then reload telling the user they have missed some field.

Oh-Twadi_com

how could i do this mate
i have no knowledge of this stuff

rincewind456

If you mean by Javascript then I can't help I don't do Javascript, if you mean by form validation then show what yorr form process page looks like and maybe we can offer help.

Oh-Twadi_com

explain a little more what u ment about what you can do,sorry if i seem slow not all gifted

rincewind456

If you want an instant notification before the form is submitted from the client, then you need javascript.

If you want the form validated (which it should be anyway, never rely on javascript validation) after the submit button has been pressed and the data sent to the server, then you use PHP.

Oh-Twadi_com

ah i think i need java then
no any gud sites for java?

rincewind456

No! No! No! Not Java, Javascript , they are light years apart .
Try http://www.webdeveloper.com their forums are good, for Javascript.

Oh-Twadi_com

thanx

rincewind456

Ok don't forget to mark the thread resolved