JSFiddle - React, Tailwind, and code Playground

HTML

<span><b></b></span>

<button>Trigger mouseout on b</button>

<div id="console"></div>

CSS

#console {
    margin-top: 20px;
}

JavaScript

$("button").click(function() {
  $("b").mouseout();
});
$("span").on("mouseleave", function() {
  $("#console").append("mouseleave<br>");
});