Modernizr Unicode character detection plugin
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/** | |
* Unicode special character support | |
* | |
* Detection is made by testing missing glyph box rendering against star character | |
* If widths are the same, this "probably" means the browser didn't support the star character and rendered a glyph box instead | |
* Just need to ensure the font characters have different widths | |
*/ | |
Modernizr.addTest('unicode', function() { | |
var bool, | |
missingGlyph = document.createElement('span'), | |
star = document.createElement('span'); | |
Modernizr.testStyles('#modernizr{font-family:Arial,sans;}', function(node) { | |
missingGlyph.innerHTML = 'ᝣ'; | |
star.innerHTML = '☆'; | |
node.appendChild(missingGlyph); | |
node.appendChild(star); | |
bool = 'offsetWidth' in missingGlyph && missingGlyph.offsetWidth !== star.offsetWidth; | |
}); | |
return bool; | |
}); |
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now living at https://github.com/Modernizr/Modernizr/blob/master/feature-detects/unicode.js