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Element: after() メソッド - Web API | MDN
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Element: after() メソッド
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2018年4月.
Element.after() は、一連の Node オブジェクトまたは文字列をこの Element の親の子リストの、 Element の直後に挿入します。文字列は Text ノードと等価なノードとして挿入されます。
構文
js
after(node1)
after(node1, node2)
after(node1, node2, /* … ,*/ nodeN)
引数
node1, …,nodeN-
挿入する一連の
Nodeオブジェクトまたは文字列です。
返値
なし (undefined)。
例外
HierarchyRequestErrorDOMException-
ノードが階層構造の中の指定された位置に挿入できなかったときに発生します。
例
要素の挿入
js
let container = document.createElement("div");
let p = document.createElement("p");
container.appendChild(p);
let span = document.createElement("span");
p.after(span);
console.log(container.outerHTML);
// "<div><p></p><span></span></div>"
テキストの挿入
js
let container = document.createElement("div");
let p = document.createElement("p");
container.appendChild(p);
p.after("Text");
console.log(container.outerHTML);
// "<div><p></p>Text</div>"
要素とテキストの挿入
js
let container = document.createElement("div");
let p = document.createElement("p");
container.appendChild(p);
let span = document.createElement("span");
p.after(span, "Text");
console.log(container.outerHTML);
// "<div><p></p><span></span>Text</div>"
仕様書
| Specification |
|---|
| DOM # ref-for-dom-childnode-after① |
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