Shims and Polyfills Note

<!–[if lt IE 9]>
<script src=”js/html5shim.js”></script>
<![endif]–>

This is a shim or a way to make html5 work for older browsers. Its more of a work around for browsers who does not support new html5 tags like <article> <section> <header> <footer> <aside> etc.

There are also shims out there that can be used like <canvas> shim, <svg> shim etc.

A polyfill is also a work around or a plugin for features not currently supported by the browsers or technology at hand. For example css3 transform property , or a javascript version not yet updated.

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