What is the regex pattern for url slug?

The regex pattern for url slug is: ^[a-z0-9]+(?:-[a-z0-9]+)*$.

How does the url slug regex work?

^: Start of string. [a-z0-9]+: One or more lowercase letters or digits. (?:-[a-z0-9]+)*: Optional repeating: hyphen followed by alphanumeric. $: End of string.

Regex for URL Slug

Matches URL-friendly slugs: lowercase letters and digits separated by single hyphens. No leading/trailing hyphens.

Pattern

/^[a-z0-9]+(?:-[a-z0-9]+)*$/

Pattern Breakdown

Token	Explanation
^	Start of string
[a-z0-9]+	One or more lowercase letters or digits
(?:-[a-z0-9]+)*	Optional repeating: hyphen followed by alphanumeric
$	End of string

Test Examples

Input	Match?
my-blog-post	Match
page1	Match
a-b-c	Match
-leading-dash	No match
UPPERCASE	No match
double--dash	No match

Common Use Cases

URL generation
Content management systems
Blog post URLs
SEO-friendly paths

Variations

^[a-z0-9-]+$

Simpler (allows leading/trailing/double hyphens)

Other Regex Patterns

Email Address US Phone Number International Phone Number URL IPv4 Address IPv6 Address Date (MM/DD/YYYY)Date (ISO 8601 YYYY-MM-DD)Time (HH:MM, 24-hour)Credit Card Number US Social Security Number US ZIP Code

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