web api instance method
Element: prepend() method
The Element.prepend() method inserts a set of
Node objects or strings before the first child
of the Element. Strings are inserted as
equivalent Text nodes.
Syntax
prepend(param1)
prepend(param1, param2)
prepend(param1, param2, /* …, */ paramN)
Parameters
param1, …,paramN- : A set of
Nodeobjects or strings to insert.
- : A set of
Return value
None (undefined).
Exceptions
HierarchyRequestErrorDOMException- : 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 unscopables for more information.
let div = document.createElement("div");
with (div) {
prepend("foo");
}
// ReferenceError: prepend is not defined
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.