InsertAfter inserting a new element after the existing element

1 functionInsertAfter (newelement,targetelement) {2     varParent =Targetelement.parentnode;3     if(Parent.lastchild = =targetelement) {4 Parent.appendchild (newelement);5     }6     Else{7 Parent.insertbefore (newelement,targetelement.nextsibling);8     }9}

This script comes from the art of JavaScript DOM Programming (2nd edition)
The DOM itself does not provide a InsertAfter method, but we can use the existing DOM methods and properties to write a InsertAfter function.

Attached: The next sibling element of the target element is the NextSibling attribute of the target element.

InsertAfter inserting a new element after the existing element