how to write javascript code inside php

Question

i have a got a form, on clicking the submit button:

1. I want to do some task in the same file (db task) AND
2. I want the form data to be sent to test.php

Answer 1

You can put up all your JS like this, so it doesn't execute before your HTML is ready

$(document).ready(function() {
   // some code here
 });

Remember this is jQuery so include it in the head section. Also see Why you should use jQuery and not onload