在ajax调用中发出警报

I'm using an ajax call to call a php function where inside it I have an alert. But the alert not fire but return me the code of the javascript (seen inside console). How can I use an laert inside an ajax call?

Please don't answer to use function success to check my data etc etc.. because I need alert inside the call please.

This is my code simplified:

$('.form-booking').each(function(){
        $form = $(this);
        $.ajax({
            async: false,
            type: 'POST',
            url: someurl.php'',
            data: $form.serialize(),
            success: function (msg) {
                console.log(msg);
            }
        });
    });

php part in someurl.php

<?php
....
//some code
....
if($some_condition){
          ?>
          <script>
          if (confirm('Do you wanna go over?')) {
              //other code
          } else {
              window.location.href = 'otherurl.php';
          }
          </script>
          <?php
}
?>

This code does't show alert if the condition is true but I see inside console in tab Net the response and the code of the script in javascript

<php

// some code

echo $some_condition

Then in your main file in your success function:

      function(data){
      if(data){
      if (confirm('Do you wanna go over?')) {
          //other code
      } else {
          window.location.href = 'otherurl.php';
      }
      }