Testing for a feature of regex compilation in IE11

Question

I would like to test for Unicode Regex Property Escapes to avoid compiling a broken regular expression in browsers that do not support it (for example IE11). Ideally, I\'d like

Answer 1

If you feel comfortable with something like Function or eval, and a try/catch...something like this should work:

try { 
  return new Function('', 'return /\\p{Script=Greek}/u;')() 
} catch(e) { return /asdf/g;}

Note you have to escape the \\p because it's contained in a string now. Tested this on IE11 and it worked (fell back without a fatal parsing error)