JSFiddle - React, Tailwind, and code Playground

by Mohamed Amer

HTML

input 1<input type="text" id="txt1" name="txt1"/> <br>input 2<input type="text" id="txt2" name="txt2" />

JavaScript

$(document).ready(function(){
	
 $('#txt2').prop('disabled',true);
  
  $('#txt1').on('input change' , function(){
    if($.trim($(this).val()) !== ""){
      $('#txt2').prop('disabled',false);
    }
  });
  
});