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 July 2015.

Element.childElementCount 只读属性返回该元素的子元素数量。

示例

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

规范

Specification
DOM Standard
# dom-parentnode-childelementcount

浏览器兼容性

BCD tables only load in the browser

参见