JSFiddle - React, Tailwind, and code Playground

HTML

<form id="myForm">
<input id="mySubmit" type="submit" value="GO" />
</form>

JavaScript

var myForm = document.getElementById('myForm');

myForm.addEventListener("submit", function(evt) {
    // Just for preventing submitting form in jsFiddle
    evt.preventDefault();
    
    var elemSubmit = document.getElementById('mySubmit');
    elemSubmit.setAttribute("disabled", "disabled");
    
    // Removes disabling after 3 seconds
    window.setTimeout(function() {
        elemSubmit.removeAttribute("disabled");
    }, 3e3);
},false);