Element.prepend()
The Element.prepend()
method inserts a set of
Node
objects or DOMString
objects before the first child
of the Element
. DOMString
objects are inserted as
equivalent Text
nodes.
Syntax
prepend(...nodesOrDOMStrings);
Parameters
Return value
undefined
.
Exceptions
HierarchyRequestError
DOMException
-
Thrown when the node cannot be inserted at the specified point in the hierarchy.
Examples
Prepending an element
let div = document.createElement("div");
let p = document.createElement("p");
let span = document.createElement("span");
div.append(p);
div.prepend(span);
console.log(div.childNodes); // NodeList [ <span>, <p> ]
Prepending text
let div = document.createElement("div");
div.append("Some text");
div.prepend("Headline: ");
console.log(div.textContent); // "Headline: Some text"
Prepending an element and text
let div = document.createElement("div");
let p = document.createElement("p");
div.prepend("Some text", p);
console.log(div.childNodes); // NodeList [ #text "Some text", <p> ]
The prepend method is unscopable
The prepend()
method is not scoped into the with
statement.
See Symbol.unscopables
for more information.
let div = document.createElement("div");
with(div) {
prepend("foo");
}
// ReferenceError: prepend is not defined
Specifications
Specification |
---|
DOM Standard # ref-for-dom-parentnode-prepend① |
Browser compatibility
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