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CSSStyleDeclaration JS Conversion


HTML DOM insertBefore() 메서드

요소 개체

예시

<ul> 요소의 첫 번째 자식 요소 앞에 새 <li> 요소를 삽입합니다.

var newItem = document.createElement("LI");       // Create a <li> node
var textnode = document.createTextNode("Water");  // Create a text node
newItem.appendChild(textnode);                    // Append the text to <li>

var list = document.getElementById("myList");    // Get the <ul> element to insert a new node
list.insertBefore(newItem, list.childNodes[0]);  // Insert <li> before the first child of <ul>

아래에서 더 많은 "직접 사용해 보기" 예를 살펴보세요.


정의 및 사용

insertBefore() 메서드는 지정한 기존 자식 바로 앞에 노드를 자식으로 삽입합니다.

팁: 텍스트를 사용하여 새 목록 항목을 만들려면 <li> 요소에 추가하는 텍스트 노드로 텍스트를 만든 다음 목록에 <li>를 삽입해야 합니다.

또한 insertBefore 메소드를 사용하여 기존 요소를 삽입/이동할 수 있습니다("추가 예제" 참조).


브라우저 지원

표의 숫자는 이 방법을 완전히 지원하는 첫 번째 브라우저 버전을 지정합니다.

Method
insertBefore() Yes Yes Yes Yes Yes

통사론

node.insertBefore(newnode, existingnode)

매개변수 값

Parameter Type Description
newnode Node object Required. The node object you want to insert
existingnode Node object Required. The child node you want to insert the new node before. If set to null, the insertBefore method will insert the newnode at the end


기술적 세부 사항

반환 값: 삽입된 노드를 나타내는 노드 개체
DOM 버전 코어 레벨 1 노드 개체

더 많은 예

예시

한 목록에서 다른 목록으로 <li> 요소를 이동합니다.

var node = document.getElementById("myList2").lastChild;
var list = document.getElementById("myList1");
list.insertBefore(node, list.childNodes[0]);

요소 개체