JSFiddle - React, Tailwind, and code Playground

HTML

<a id='test'>LINK</a>

JavaScript

$("#test").mouseenter(function(){
    setTimeout(function(){
        $.ajax({
            url:"test.php",
            success:function(){
                alert("success");
            },
            error:function(){
                alert("ERROR");
            }
        });
    },5000);
});