JSFiddle - React, Tailwind, and code Playground

HTML

<form>
  <input type="text" id="field" onkeydown="test(event);">
</form>

JavaScript

function test(ev){
            if(ev.keyCode == 13){
            alert ("enter key");
            }
        }

            field = document.getElementById("field");
            var e = document.createEvent("KeyboardEvent"); 
            e.initKeyboardEvent("keydown", true, true, window,true, false, false, false,13, 0);
            field.dispatchEvent(e);