JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript"><!--
function ddd(a,b,c){
	alert(a.id);	//DEBUG!!!
  alert(eval((a.id).htmlfor));
}
//--></script>



<div class="contr-1"><input type="text" id="regusername" name="regusernameddd" class="input-1" onkeyup="ddd(this, 5, 4)" /><div class="input-tip">5 to 40 characters</div></div>
        <label for="regusername" >Username</label>

JavaScript

function maria(a,b,c){
	alert("add");	//DEBUG!!!
}