Using Jquery with code snippets

Dear all,
i have a php snippet called Test1

i use a jquery under js\js_new.js

I use Test1 to create a table and get some data from an api.
With js_new.js i get the result from the table by clicking
var helloWorld = $(‘#regFahrzeugliste’).html(file);
is updating a div with the variable file

however i need the variable file from js_new.js in my php code snippet…

how could i do it?