The Element.firstElementChild read-only property returns 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.
An Element object, or null.
html
<ul id="list">
<li>First (1)</li>
<li>Second (2)</li>
<li>Third (3)</li>
</ul>
<script>
const list = document.getElementById("list");
console.log(list.firstElementChild.textContent);
// logs "First (1)"
</script>
| Specification |
|---|
| DOM Standard # ref-for-dom-parentnode-firstelementchild① |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
firstElementChild |
2 | 12 | 3.5 | 9 | 10 | 4 | ≤37 | 18 | 4 | 10.1 | 3 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Element/firstElementChild