display a javascript message before proceeding


I have this code that is to fetch a particular item in the database after the user presses a button. If the item is found I would like to display a confirm message via javascript and I don't know how to show it.

After obtaining the item from the database

if(null!=mysqli_fetch_array($res))) { echo ""; // how can I call the javascript code here ? }

and the following confirm box

<script type="text/javascript"> function onConfirm() { return confirm("Display this item ?"); } </script>


Use jquery and ajax to get the value from the database:

<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script> $.get("ajax.php", function(data){ if(data != "0"){ if(confirm("Display this item ?")) { //do something } } });


//other db code here if(null!=mysqli_fetch_array($res))) { echo "1"; } else{ echo "0"; }


There are number of ways you can solve this. A good way is to:

<ul><li>Send an ajax request to a page</li> <li>The page does the mysql stuff and returns<sup>(echo in case of PHP)</sup> the message</li> <li>On the callback function use simple way such as alert() to show the message.</li> </ul>


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