Unicode-aware regular expressions in ES2015 · Mathias Bynens

ECMAScript 2015 introduces two new flags for regular expressions: y enables ‘sticky’ matching. u enables various Unicode-related features. This article explains the effects of the u flag. It helps if you’ve read JavaScript has a Unicode problem first. Impact on syntax Setting the u flag on a regular expression enables the use of ES2015 Unicode code point escapes (\u{…}) in the pattern. // Note: `a

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ES6で導入された正規表現の`u`フラグについての解説とES5でも使えるようにするTransppilerについて。 正規表現でユニコード文字を正しく扱うためのフラグ