JSFiddle - React, Tailwind, and code Playground

HTML

<button onCLick="pop()">Abrir janela</button>

JavaScript

function pop() {
  var child = window.open('http://ddg.gg', '','toolbar=0,status=0,width=400,height=420');
  var timer = setInterval(CheckChild, 500);

  function CheckChild() {
    if (child.closed) {
      alert("Aqui voce recarrega a pagina");
      clearInterval(timer);
    }
  }
}