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Element: hasAttribute() メソッド - Web API | MDN
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Element: hasAttribute() 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 2015年7月.
Element.hasAttribute() メソッドは、指定した要素が指定した属性を持つかどうかを示す論理値を返します。
構文
js
hasAttribute(name)
引数
name-
属性の名前を示す文字列です。
返値
論理値です。
例
js
const foo = document.getElementById("foo");
if (foo.hasAttribute("bar")) {
// do something
}
仕様書
| Specification |
|---|
| DOM # ref-for-dom-element-hasattribute① |
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