Chrome 54 Beta Brings Custom Elements V1: Create Custom HTML Tags
Written by Michael Larabel in Google on 15 September 2016 at 02:32 PM EDT. 6 Comments
Google today is rolling out the Chromium/Chrome 54 web-browser beta, which incorporates several new features for web developers plus media platform improvements for Chrome on Android.

Most notable to Chrome 54 is the addition of Custom Elements V1, the newer implementation of this specification agreed upon by major browser vendors for allowing custom HTML tags. This V1 support complements Chrome's currently-maintained V0 support, which will be discontinued once more developers support the V1 API. Custom Elements allow developers to create their own HTML tags and to define the element's API and behavior using the JavaScript interface. The goal of these custom tags support is to allow building more reusable, interoperable components.

Also for developers in Chrome 54 is the BroadcastChannel API as a one-to-many messaging interface for allowing web applications to communicate between windows/tabs/WebWorkers/ServiceWorkers running in the same browser session.

Lastly, added to Chrome 54 beta are media platform improvements to Chrome on Android, support for the CECPQ1 cipher suite for TLS, various SVG changes relating to the latest SVG 2.0 specification, and other changes.

More details on Chrome 54 beta via the Chromium blog.
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