index.md

---

title: regexp:test()
slug: Web/EXSLT/regexp/test

---

{{XSLTRef}}{{QuickLinksWithSubpages("/en-US/docs/Web/EXSLT")}}

regexp:test() tests to see whether a string matches a specified regular expression.

Syntax

regexp:test(testString, regExpString[, flagsString])

Parameters

• testString

  • : The string to test.

• regExpString

  • : The JavaScript style regular expression to evaluate.

• flagsString {{optional_inline}}

  • : An optional string containing character flags.

The character flags are:

• g

  • : Global match. Has no effect for this function; it's allowed for consistency with other regexp functions.

• i

  • : Case insensitive match<. If this flag is specified, the match is performed in a case insensitive fashion.

Returns

true if the specified regexp matches the test string.

Specifications

EXSLT - REGEXP:TEST