JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="emailVerifyer">

JavaScript

var myEmailTimeoutChecker;

$('#emailVerifyer').keyup(function(){
   myEmailTimeoutChecker = setTimeout(verifyEmail, 1000)
});
    

    $('#emailVerifyer').keydown(function(){
      window.clearTimeout(myEmailTimeoutChecker);
    });


function verifyEmail()
{
    alert("Now we're verifying your email address");
  // do the real work here.
}