How to Match Accented Characters with JavaScript Regular Expressions?

JavaScript Regular Expression for Accented Characters

Background

Despite its adherence to Unicode, JavaScript presents challenges in matching accented characters ("diacritics") using regular expressions.

Approaches

Several approaches exist to address this issue:

Explicit Accented Character Listing

Manually listing all relevant characters is tedious and impractical.

Wildcard Character Class

Using the "." character class allows matching any character, but risks overmatching.

Unicode Range

The range u00C0-u017F covers many non-Latin characters, but its comprehensiveness requires careful consideration.

Best Solution

A more straightforward approach is to utilize predefined character classes:

[A-zÀ-ú] // accepts lowercase and uppercase accented characters

For a wider range of accents, including umlauts and other diacritics:

[A-zÀ-ÿ] 

Gotchas

Ensure the range or character class covers the expected input, as not all accented characters are included in these sets.

The above is the detailed content of How to Match Accented Characters with JavaScript Regular Expressions?. For more information, please follow other related articles on the PHP Chinese website!