embed-test.html

<!DOCTYPE html>
<html lang="pt-BR">
  <head>
    <title>Teste de boleto Embedado</title>
    <meta content='text/html; charset=utf-8' http-equiv='Content-Type'>
    <meta content='IE=edge,chrome=1' http-equiv='X-UA-Compatible'>
    <meta content='width=device-width, initial-scale=1.0' name='viewport'>
  </head>
  <body>
    <h1>Testando o Embed</h1>

    <h2>Boleto ainda não gerado</h2>
    <script src="https://localhost:5001/2/xxx.js"></script>

    <h2>Boleto Avulso</h2>
    <script src="https://localhost:5001/2/zp.js"></script>

    <h2>Boleto Fatura</h2>
    <div id="boleto-fatura"></div>

    <h2>Parcela 2 do Carnê</h2>
    <div id="boleto-parcela-2"></div>

    <h2>Carnê Inteiro</h2>
    <div id="carne"></div>

    <script src="https://localhost:5001/2/yj/carne.js?target=carne"></script>
    <script src="https://localhost:5001/2/zp/letter.js?target=boleto-fatura"></script>
    <script src="https://localhost:5001/2/yj/carne/2.js?target=boleto-parcela-2"></script>
  </body>
</html>