How can I detect rendering support for emoji in Ja

Question

I want to add emoji to my site, but hide them if they're not supported on the platform, rather than showing little squares.

I have a feeling that this isn't possible, but does anybody disagree? How can this be done?

C

Answer 1

In case if someone is looking for a library, then here is the one if-emoji. It uses the same approach Roko has used in his answer.

Answer 2

Try to paint a font (in the Emoji range) to canvas and read a pixel using getImageData. If the pixel's Alpha channel data[3] you're interested-in is not transparent (like for example in the center of ￿) than might be an Emoji

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