Mixing Javascript and PHP

the_myth

I'm working on a registation form and instead of displaying an error (like a left out field) with another PHP page, I would like for a pop-up box (or alert box, whatever :p) to "pop-up" and tell the user the error like, "Please enter your name..."

Is this possible? If so, can someone give me simple example?

Thanks!

kamy99

ok, first of all yes you can do it with javascript.
depending on what type of input box you have, like text box, radio buttons,.... parts of your script change.
I assume you only have text boxes:
Remember this is a very simple example:


<html>
<head>
<title>Untitled Document</title>

<script language="JavaScript">
function CheckForm()
{

if(document.form1.name.value=="")
{
alert("Enter your name");
return false;
}
if(document.form1.comment.value=="")
{
alert("Enter your comments");
return false;
}




}


</script>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body>
<form name="form1" method="post" action="" onSubmit="return CheckForm();">
  <p>
    <input type="text" name="name">
  </p>
  <p> 
    <textarea name="comment"></textarea>
  </p>
  <p>
    <input type="submit" name="Submit" value="Submit">
  </p>
</form>

</body>
</html>

HTH

kamy

the_myth

I will try it out! Thanks a lot!

the_myth

Works great! I have another question, how do I compare two variables and if they don't match send an error? Would it be something like this? I know this don't work, but is it on the right track?

if(document.form1.user_email.value!=user_email2)
{
alert("Email Address do not match! Please Try again");
return false;
}

Another question:

How would I change the heading of the alert box to be something other than "Javascript Application?"

sijis

for comparing values
this should work:

var pwd = document.form1.user_email.value;
var pwd1 = document.form1.user_email2.value;
if(pwd.match(pwd2)){
   return true;
}
else {
    return false;
}

hmm.. maybe something like this could work..

if(!pwd.match(pwd2)){......

i don't know how to change that in the alert box.
maybe a function/method listed here might be of help.

http://www.devguru.com/Technologies/ecmascript/quickref/javascript_index.html

good luck.