JSFiddle - React, Tailwind, and code Playground
JavaScript
document.addEventListener("keydown", function (e) {
console.log("keydown", e);
}, false);
evt = document.createEvent("KeyboardEvent");
evt.initKeyboardEvent("keydown", true, true, window, "U+004A", 0, false, false, false, false, false);
//evt.keyCode = 74; // Setting it as an expando property on the event object doesn't work
document.dispatchEvent(evt);