CodePen Embed - Usando <template>

<template>
  <h1>Hola, Jaime Cervantes</h1>
  <p>¿Cómo estás?</p>
</template>

<div id="host">

</div>

// Elemento donde se va insertar los nuevos elementos
const host = document.querySelector("#host");
const tpl = document.querySelector('template');
const tplInst = tpl.content.cloneNode(true);

host.appendChild(tplInst);

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