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X-Tag - Custom Elements for Modern Browsers

Based on the current W3 Web Components draft, X-Tag enables the custom element portion of the proposal. Custom elements let you register new tags/elements with the parser so they are recognized and inflated with special abilities you define.

Find out more about what X-Tag does, where it works, and how to use it, on the project page here:

X-Tag (excluding third-party icons or images) is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at


To get started hacking on X-Tag, first check out the code and be sure you also clone the elements submodule:

git clone --recursive

Open up demo.html in your browser to see how things work.

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