How Can I Match Non-ASCII Characters Using JavaScript/jQuery Regular Expressions?

Non-ASCII Character Matching with Regular Expressions in JavaScript/jQuery

Matching non-ASCII characters in a regular expression can be essential for handling internationalized strings or data that may contain non-English characters. In JavaScript/jQuery, the following approaches can be used:

ASCII Exclusion:

The most straightforward approach is to exclude ASCII characters from the match using the character class negation syntax:

[^\x00-\x7F]+

This regex matches one or more characters that are not within the ASCII character range (0-127).

Unicode Exclusion:

Similarly, you can exclude Unicode characters:

[^\u0000-\u007F]+

This regex excludes all Unicode characters in the range 0x0000 to 0x007F.

Unicode Block Matching:

For finer control, you can use Unicode character blocks to filter your matches. These blocks represent groups of related characters, such as Cyrillic or Hangul.

Use a tool like [UTF-8 Regex Checker](https://rishida.net/tools/regex/) to find the Unicode block of the characters you need to match. For example, to match Cyrillic characters:

[\p{Cyrillic}]+

Handling Individual Words:

To match individual words that may contain non-ASCII characters, you can combine these techniques with word boundary anchors:

\b[^\x00-\x7F]+\b

This regex matches words that are not surrounded by ASCII characters.

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