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I am extracting a character in a Javascript string with:
var first = str.charAt(0);
and I would like to check whether it is a letter. Strangely, it does not seem like such functionality exists in Javascript. At least I cannot find it.
How can I test this?
I believe this plugin has the capabilities you seek: http://xregexp.com/plugins/ (github link: https://github.com/slevithan/xregexp)
With it you can simply match all unicode letters with
\p{L}.Read the header of this source file to see which categories it supports: http://xregexp.com/plugins/xregexp-unicode-categories.js