<button

  type="button"

  class="btn btn-lg btn-danger"

  data-mdb-ripple-init

  title="Popover title"

  id="example"

>

  Click to toggle popover

</button>

​

const exampleTriggerEl = document.getElementById('example')

const popover = new mdb.Popover(exampleTriggerEl, {content: 'JS content'})

​