The DocumentFragment.replaceChildren() method replaces the existing children of a DocumentFragment with a specified new set of children. These can be string or Node objects.

param1, …, paramN

A set of Node or string objects to replace the DocumentFragment's existing children with. If no replacement objects are specified, then the DocumentFragment is emptied of all child nodes.

None (undefined).

HierarchyRequestError DOMException

Thrown when the constraints of the node tree are violated.

replaceChildren() provides a very convenient mechanism for emptying a document fragment of all its children. You call it on the document fragment without any argument specified:

let fragment = new DocumentFragment();
let div = document.createElement("div");
let p = document.createElement("p");
fragment.append(p);
fragment.prepend(div);

fragment.children; // HTMLCollection [<div>, <p>]

fragment.replaceChildren();

fragment.children; // HTMLCollection []

• DocumentFragment.prepend()
• DocumentFragment.append()