Element: childElementCount プロパティ
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Element.childElementCount
は読み取り専用のプロパティで、この要素の子要素の数を返します。
例
js
let sidebar = document.getElementById("sidebar");
if (sidebar.childElementCount > 0) {
// 何かを行う
}
仕様書
Specification |
---|
DOM # dom-parentnode-childelementcount |
ブラウザーの互換性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
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childElementCount |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.