required - Require HTML5 to use a website -

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Theoretically, can you find out that the browser supports HTML5 and the visitor is IE9 / Firefox / Chrome / Safari Indicates to upgrade to Opera / Opera if it does not support some features such as CSS3 or Audio / Video tags?

I am developing a hobby music site mostly in the walled gardens and want to stop those people from preventing / logging from countless browsers.

Mass appeal is not a requirement because the site is for a niche and maximizes the use of JavaScript and HTML 5

I think you want to use the modern IRS Javascript API to detect the HTML5 feature.



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