JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.2/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.2/js/bootstrap.min.js"></script>
<p><input type="text" name="objetivo" data-toggle="modal" data-target="#myModal" class="vModal" /> </p>
    <p><input type="text" name="actividad" data-toggle="modal" data-target="#myModal" class="vModal" /> </p>
<p><input type="text" nombre="cronograma"></p>
   

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true"></button>
        <h4 class="modal-title" id="myModalLabel">Ingrese los datos</h4>
      </div>
      <div class="modal-body">
        <textarea id="textareaID" class="form-control"></textarea>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-danger" id="btnAceptar" data-dismiss="modal">Aceptar</button>
          <button type="button" class="btn btn-default" data-dismiss="modal">Cancelar</button>
        
      </div>
    </div><!-- /.modal-content -->
  </div><!-- /.modal-dialog -->
</div><!-- /.modal -->

JavaScript

$padre=null;
$('.vModal').on('click', function () {
    $padre=$(this);
});
$('#myModal').on('focus', function () {
    $('#textareaID').focus();
});
$('#btnAceptar').on('click', function(){
   $textarea=$('#textareaID');
   $padre.val($textarea.val());
   $textarea.val('');
});