Question

I’m very interested in if it is possible to connect javascript variables to php. I know that in php we can write javascript code, but on the contrary we could not. To express my aim better , lets bring example like that:

<form name="some" action="<?php $_SERVER['php_self']; ?>" method="post">
 <input type="submit" name="but" value="Action">
</form>

My question is how to make after pressing submit button to confirm (alert) with javascript and if it is confirmed do something (with php) and if isn’t cancel (php operation).

Answer 1

You can do two things to pass javascript variable to php:

1. You can pass it as a hidden input field and submit it using POST

   <input id="myHidden" name="myHidden" type="hidden"/>

   Assign javascript variable to hidden input something like

   var myVariable;

   document.getElementById("myHidden").value = myVariable;

2. You can pass it as a query string with in your URL

As for confirming you can use javascript confirm, which will post on OK and not post/cancel on CANCEL

Something like:

<input type="submit" onclick="return confirm('Are you sure you want to submit?')"/>