JSFiddle - React, Tailwind, and code Playground

HTML

<div id="TestID" class="div1">This is a test.</div>

JavaScript

var my_var;
//function 1
$(".div1").hover(function(){
    my_var=$(this).attr('id'); //this doesn't work
});

//function 2
$(".div1").hover(function(){
 //i want to make use of my_var here, but it is blank
    alert(my_var);
});