Can Javascript know your IP? [duplicate]

Question

Possible Duplicate:
Get Client IP using just Javascript?

I know PhP can know your IP from <?php echo $_SERVER['REMOTE_ADDR']; ?>

How can javascript do so?

Or is it true that because javascript is client side it doesn't know the IP of the computer?

Answer 1

If the file containing your JS code is parsed by PHP, you should be able to inject the IP-address into the JS code by PHP.

<script type="text/javascript">
 var ipaddress = "<?php echo $_SERVER['REMOTE_ADDR']; ?>";
</script>