Strip U + 10000-U + 10FFFF from javascript strings

Question

Tried string.replace(/\u10000-\u10FFFF/g, '') , but unfortunately \u does not support 10000 +

Answer 1

To specify code points outside of U + FFFF, you need to look for pairs of UTF-16 surrogates :

 string.replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, '') 

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For future reference: one of the current ECMAScript proposals is to add the /u flag to support Additional Unicode characters that will allow:

 string.replace(/[\u{10000}-\u{10ffff}]/gu, '')