Javascript and PHP

Anon

Is there a way for me to pass variables to PHP using Javascript, and vice versa?

Anon

Yes!

echo(<A href="javascript:sendToPage('/cart.php?id=CA5463RD79')">Add To Cart</A>);

Cart.php

<?php
echo("Add: " . $id);
?>

polson

I know little javascript but consider passing them through the url (QUERY_STRING), here's a simple not-perfect example/hack (and various other disclaimers) of passing screen width and height through url :

<head>
<SCRIPT language="JavaScript">
<!--
var w = screen.width;
var h = screen.height;

window.location.replace("<?php echo $PHP_SELF ?>?w=" + w + "&h=" + h);

//-->
</SCRIPT>
</head>

All related advice welcome! I chose location.replace as to allow a user to press their BACK button with less annoyances. IE4+/NS4+ iirc.

messy

Is there a way to pass a PHP variable of a date/time function to Javascript?

polson

Passing information into javascript is very easy. Just create the javascript through PHP and place the info accordingly.

Or for everyones favorite :

<SCRIPT language="JavaScript">
<!--
<?php
$date = date("Y m d");

echo "alert('Todays date is $date !')";

?>
//-->
</SCRIPT>

And such. I am the last guy that should be talking about javascript usage! Hopefully the above makes sense.