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Element:childElementCount 属性

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.childElementCount 只读属性返回该元素的子元素数量。

示例

let sidebar = document.getElementById("sidebar");
if (sidebar.childElementCount > 0) {
 // 做点什么
}

Specification
DOM # dom-parentnode-childelementcount

This page was last modified on ⁨2024年6月7日⁩ by MDN contributors.