This snippet written in JavaScript converts the elements of an array into tags and appends them to the list of the given ID. The <li> tag defines a list item. The <li> tag is used in ordered lists (<ol>), unordered lists (<ul>) and in menu lists (<menu>)

const arr2li = (arr, listID) =>
  (el => (
    (el = document.querySelector('#' + listID)),
    (el.innerHTML += arr.map(item => `<li>${item}</li>`).join(''))
  ))();
  
arr2li(['element1', 'element2'], 'your_list_ID');