Google at I / O 2013 introduced support for web components . This allows us to create reusable HTML modules for insertion into web pages. But today we can embed these widgets on the client side using <iframe> -s, hidden <div> -s, AJAX, JavaScript templates such as EJS or mustache.js, or even XSLT. We can even put them in the sandbox using <iframe sandbox> , Google Caja or Microsoft Web Sandbox. What is so special about web components that we use it?
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