integrating javascript with current php

[GarethHop]

i have an intranet based on php, this includes forms and such.
I want to perform javascript validation before a php script is called to submit the information into a mysql database.
can any one help me

eg
if(isset($add)
{
$strQuery = "insert into ...";

[itbeings]

Explain better. What kind of validation? Input validation? Submit validation or what?

[NightShift58]

Take a look at this page. It'll get you started.

http://www.w3schools.com/js/js_form_validation.asp

[itbeings]

I have once used JS with php before and this is how I wrote it.

<?php if(!empty($_SESSION['reply'])){ ?>
<script language="javascript">
alert("<?php echo $_SESSION['reply']; ?>");
</script>
<?php
}
$_SESSION['reply'] = "";
?>

I guess that looks much simple but with it you should be able to grab an idea.