To append HTML to container element without innerHTML with JavaScript, we call the insertAdjacentHTML method.
For instance, we write
const d1 = document.getElementById("one");
d1.insertAdjacentHTML("beforeend", '<div id="two">two</div>');
to select the container element with getElementById.
And then we call insertAdjacentHTML method with 'beforeend' and a string with the element to insert.
'beforeend' inserts the HTML as the last child of the container element.
