What is "x-tags"
X-Tag allows you to easily create elements that encapsulate common behaviors or use existing custom elements to quickly catch the behavior you’re looking for. For example, check the Brick, containing 15 elements customized and optimized for Web Applications.
Creating custom elements has never been easier. X-Tag provides several powerful features for creating elements via command line, such as: Custom events and delegation, merge, access, component lifecycle functions, pseudos and more.
X-Tag was made upon polyfills based on W3C Web Componentprovided by polymer project. Custom Element, Htmlimports, and Mutation Observers were used. Some other polyfills were also included to ensure IE9 compatibility.
Official website: http://x-tags.org/ Source code: https://github.com/x-tag/core