--- title: ParentNode.prepend() slug: Web/API/ParentNode/prepend translation_of: Web/API/ParentNode/prepend ---
{{APIRef("DOM")}}

ParentNode.prepend() 메소드는 {{domxref("Node")}} 객체 또는{{domxref("DOMString")}} 객체를 {{domxref("ParentNode")}}의 첫 자식노드 앞에 삽입한다. {{domxref("DOMString")}} 객체는 {{domxref("Text")}} 노드와 동일하게 삽입된다.

Syntax

ParentNode.prepend(...nodesToPrepend);

Parameters

nodesToPrepend
One or more nodes to insert before the first child node currently in the ParentNode. Each node can be specified as either a {{domxref("Node")}} object or as a string; strings are inserted as new {{domxref("Text")}} nodes.

Return value

undefined.

Exceptions

Examples

Prepending an element

var parent = document.createElement("div");
var p = document.createElement("p");
var span = document.createElement("span");
parent.append(p);
parent.prepend(span);

console.log(parent.childNodes); // NodeList [ <span>, <p> ]

Prepending text

var parent = document.createElement("div");
parent.append("Some text");
parent.prepend("Headline: ");

console.log(parent.textContent); // "Headline: Some text"

Appending an element and text

var parent = document.createElement("div");
var p = document.createElement("p");
parent.prepend("Some text", p);

console.log(parent.childNodes); // NodeList [ #text "Some text", <p> ]

ParentNode.prepend() is unscopable

The prepend() method is not scoped into the with statement. See {{jsxref("Symbol.unscopables")}} for more information.

var parent = document.createElement("div");

with(parent) {
  prepend("foo");
}
// ReferenceError: prepend is not defined

Polyfill

You can polyfill the prepend() method if it's not available:

// Source: https://github.com/jserz/js_piece/blob/master/DOM/ParentNode/prepend()/prepend().md
(function (arr) {
  arr.forEach(function (item) {
    if (item.hasOwnProperty('prepend')) {
      return;
    }
    Object.defineProperty(item, 'prepend', {
      configurable: true,
      enumerable: true,
      writable: true,
      value: function prepend() {
        var argArr = Array.prototype.slice.call(arguments),
          docFrag = document.createDocumentFragment();

        argArr.forEach(function (argItem) {
          var isNode = argItem instanceof Node;
          docFrag.appendChild(isNode ? argItem : document.createTextNode(String(argItem)));
        });

        this.insertBefore(docFrag, this.firstChild);
      }
    });
  });
})([Element.prototype, Document.prototype, DocumentFragment.prototype]);

Specification

Specification Status Comment
{{SpecName('DOM WHATWG', '#dom-parentnode-prepend', 'ParentNode.prepend()')}} {{Spec2('DOM WHATWG')}} Initial definition.

Browser compatibility

{{Compat("api.ParentNode.prepend")}}

See also