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 # dom-parentnode-childelementcount |
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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.