How to connect JS with PHP correctly?

Question

JavaScript

Good afternoon, gentlemen :)
I want to use the insert () method at the DB facade every 2 seconds and looked towards JS, but I can’t figure out how to shove the pykher code into JS, I found options with variables, but I think that’s how they do it somehow not right.
Found an example:

<script language=javascript>
var jsvar;

jsvar = <?php echo $phpvar;?>
</script>

What I'm trying to put in:

DB::table('zagon_all')->insert(
    ['id' => '']
    );

var timerId = setInterval(function() {
 // Сюды хочу засунуть данную тему с добавлением данных в БД
 }, 2000);

Answer 1

State? How PHP (server-side language) should work in your browser? Are you out of your mind?
Make a server side handler and use AJAX requests to do something