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¿Cómo puedo mostrar contenido actualizado dinámicamente en una ventana emergente de Bootstrap?

Tengo un popover Bootstrap 4.7 de la siguiente manera. Esto funciona bien sin el popover. Sin embargo, si inserto id="countdown" en el contenido de datos, no se muestra el resultado. ¿Cómo arreglas esto? Muchas gracias. PD: el valor endTime es solo una referencia, el valor real está cerca de Date().getTime() .

 var myfunc = setInterval(function() { var endTime = 6666666666 var currentTime = new Date().getTime() / 1000 | 0 var seconds = endTime - currentTime // output document.getElementById("countdown").innerHTML = seconds + "s " // when countdown is over if (remaining < 0) { clearInterval(myfunc); document.getElementById("countdown").innerHTML = "" } }, 1000);
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.1/dist/css/bootstrap.min.css" integrity="sha384-zCbKRCUGaJDkqS1kPbPd7TveP5iyJE0EjAuZQTgFLD2ylzuqKfdKlfG/eSrtxUkn" crossorigin="anonymous"> <div class="myinfo" data-container="body" data-toggle="popover" data-html="true" data-placement="top" data-trigger="hover" data-content='<span class="style-text-mini">Submit Time:</span> <span id="countdown"></span>'>Div content</div> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-fQybjgWLrvvRgtW6bFlB7jaZrFsaBXjsOMm/tB9LTS58ONXgqbR9W8oWht/amnpF" crossorigin="anonymous"></script>

about 4 years ago · Juan Pablo Isaza
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