customElements.upgrade()

This function upgrades undefined custom elements explicitly. If a custom element is created with the innerHTML setter and its parent node is not connected to a document, the custom element is not upgraded until it's connected. Upgrading such elements explicitly allows developers to handle them in a single way regardless of connectedness.

Specification

Editor's draft

Status in Chromium

Blink components: Blink>HTML>CustomElements

Enabled by default (tracking bug) in:

Chrome for desktop release 68
Chrome for Android release 68
Android WebView release 68
Opera release 55
Opera for Android release 55

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

Firefox: No public signals
Edge: No public signals
Safari: Public support
Web Developers: Positive

Last updated on 2018-04-23