appendChild e1 e2 inserts the element e2 as last child of e1. If the optional parameter ~before:e3 is present and if e3 is a child of e1, then e2 is inserted before e3 in the list of e1 children.

appendChildren e1 elts inserts elts as last children of e1. If the optional parameter ~before:e3 is present and if e3 is a child of e1, then elts are inserted before e3 in the list of e1 children.

insertFirstChild p c inserts c as first child of p

nth e n returns the nth child of e (first is 0)

childLength e returns the number of children of e

removeChild e1 e2 removes for e2 from the list of children of e1.

replace e1 e2 e3 replaces e3 by e2 in the list of children of e1.

removeChildren e1 removes all children of e1.

removeSelf e removes element e from the DOM.

replaceChildren e1 elts replaces all the children of e1 by elt.

parentNode elt returns the parent of elt, if any.

nextSibling elt returns the next element that has the same parent, if elt is not the last.

previousSibling elt returns the previous element that has the same parent, if elt is not the first.

insertBefore ~before elt insert elt before before.

insertAfter ~after elt insert elt after after.

replaceSelf elt1 elt2 replaces elt1 by elt2.

Dom manipulation by element identifier.