Element: firstElementChild property
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.
Thuộc tính Element.firstElementChild là thuộc tính chỉ đọc
trả về an element's first child Element, or null if there
are no child elements.
Element.firstElementChild includes only element nodes.
To get all child nodes, including non-element nodes like text and comment nodes, use Node.firstChild.
Giá trị
Một Element object, or null.
Ví dụ
html
<ul id="list">
<li>First (1)</li>
<li>Second (2)</li>
<li>Third (3)</li>
</ul>
js
const list = document.getElementById("list");
console.log(list.firstElementChild.textContent);
// logs "First (1)"
Đặc tả kỹ thuật
| Specification |
|---|
| DOM # ref-for-dom-parentnode-firstelementchild① |