JSFiddle - React, Tailwind, and code Playground

JavaScript

var c;

function inc() {
     ++c;
}

$.each(["unload", "keyup unload"], function(_, types) {
    c = 0;
    $(window).bind( types, inc ).trigger("unload").trigger("unload");
    $("<p>").text( 'bind("'+ types +'") - unload handled ' + c + ' times.' ).appendTo("body");
});