DocumentFragment: prepend() method

{{APIRef("DOM")}}

The DocumentFragment.prepend() method inserts a set of {{domxref("Node")}} objects or strings before the first child of the document fragment. Strings are inserted as equivalent {{domxref("Text")}} nodes.

This method prepends a child to a DocumentFragment. To prepend to an arbitrary element in the tree, see {{domxref("Element.prepend()")}}.

Syntax

prepend(param1)
prepend(param1, param2)
prepend(param1, param2, /* …, */ paramN)

Parameters

• param1, …, paramN
  • : A set of {{domxref("Node")}} objects or strings to insert.

Return value

None ({{jsxref("undefined")}}).

Exceptions

• HierarchyRequestError {{DOMxRef("DOMException")}}
  • : Thrown when the node cannot be inserted at the specified point in the hierarchy.

Examples

Prepending an element to a document fragment

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>]

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("DocumentFragment.append()")}}
• {{domxref("Element.prepend()")}}