The Document.prepend()
method inserts a set of Node
objects or string objects before the first child of the document. String objects are inserted as equivalent Text
nodes.
This method prepends a child to a Document
. To prepend to an arbitrary element in the tree, see Element.prepend()
.
prepend(param1)
prepend(param1, param2)
prepend(param1, param2, paramN)
If you try to prepend an element to an existing HTML document, it might throw a `HierarchyRequestError' DOMException
given a <html>
element already exists.
let html = document.createElement("html");
document.prepend(html);
If you are creating a new document without any existing element, you can prepend a root HTML element (or a root SVG element):
let doc = new Document();
let html = document.createElement("html");
doc.prepend(html);
doc.children;