RegexTest

Tests whether text contains a match for the specified regex pattern.

Syntax

RegexTest(text, pattern)

Parameters

• text (string): The source text to search
• pattern (string): The regex pattern to test for

Returns

• boolean: true if the pattern matches anywhere in the text, false otherwise

Description

Checks whether the input text contains at least one match for the specified regex pattern. Returns a boolean indicating whether a match exists.

Use this function when you only need to know if a pattern exists, without extracting the actual matched text.

Examples

Check for email presence

var hasEmail = RegexTest(userInput, "[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+[.][a-zA-Z]{2,}")
# Returns true if text contains an email address

Check for digits

var hasNumbers = RegexTest(text, "[0-9]")
# Returns true if text contains any digit

Check for URL

var hasUrl = RegexTest(content, "https?://")
# Returns true if text contains http:// or https://

Use in conditionals

if RegexTest(input, "^[a-zA-Z]+$")
    # Input contains only letters
    result = "Valid alphabetic input"
else
    result = "Input contains non-letter characters"
end

No match returns false

var result = RegexTest("Hello World", "[0-9]+")
# Returns false (no digits in text)

Notes

• Uses .NET regular expression syntax
• Throws a runtime exception if the regex pattern is invalid
• For extracting the matched text, use RegexMatch() or RegexMatchAll()
• More efficient than RegexMatch() when you only need a boolean check

Pattern Escaping in Jyro Strings

Jyro strings support a subset of escape sequences (\n, \t, \r, \", \\). Common regex shortcuts like \d or \w require character class alternatives.

Use character classes instead:

Instead of	Use
\d	[0-9]
\w	[a-zA-Z0-9_]
\s	[ \t\n\r]
\.	[.]