JSFiddle - React, Tailwind, and code Playground

HTML

<form class="form-contact-warp form-calc-ship cb-form" action="javascript:redirect();">
  <input class="form-control" required="" id="textBox" type="text" name="code" size="15"  placeholder="USI-TECH affiliate ID">
  <button type="submit" class="btn-main-color btn-block"> Create page</button>
</form>
<div id="response"></div>

JavaScript

$(function(){
	$('form').on('submit',function(e){
  	e.preventDefault();
  	$('#response').html('http://www.example.com/'+encodeURI($('#textBox').val()));
  });
});