Web features explorer - moveBefore()

Web features explorer

The moveBefore() DOM method relocates a node while preserving its state. For example, you can move the active element without losing focus, move an animated element without resetting the animation, or move an iframe without reloading its content.

Browser support

Chrome 133 Released on 2025-02-04
Chrome Android 133 Released on 2025-02-04
Edge 133 Released on 2025-02-06
Firefox 144 Released on 2025-10-14
Firefox for Android 144 Released on 2025-10-14
Safari Not supported Bugs: 281223
Safari on iOS Not supported Bugs: 281223

Baseline availability blocked since October 2025 by Safari (9 months)

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MDN documentation

Specifications

DOM (#dom-parentnode-movebefore), from DOM Workstream (WHATWG).
HTML (#preserving-custom-element-state-when-moved), from HTML Workstream (WHATWG).

Usage (according to Chrome Platform Status)

~0.018% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

Surveys

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