Regex for URL slug

Note

Lowercase letters and digits joined by single hyphens, with no hyphen at either end.

Matches in the example

• "hello-world"
• "my-post-2024"

Token by token

1. ^ the start of the string (or line, with the m flag)
2. [a-z0-9]+ one of: “a” to “z” or “0” to “9”, one or more times, as many as possible
3. (?: a group, not capturing
4. - the character “-”
5. [a-z0-9]+ one of: “a” to “z” or “0” to “9”, one or more times, as many as possible
6. )* end of group, whole group zero or more times, as many as possible
7. $ the end of the string (or line, with the m flag)

Other patterns

• Email address
• URL
• IPv4 address
• UUID
• Hex color
• Date (YYYY-MM-DD)
• Time (24-hour)
• US phone number
• Phone number (E.164)
• US ZIP code
• Credit card number
• URL slug
• Username
• Strong password
• HTML tag
• Semantic version
• MAC address
• JSON Web Token
• Hashtag
• @mention
• Number
• Leading and trailing whitespace
• Repeated word
• Blank lines
• Markdown link
• Quoted string
• Domain name
• File extension
• Base64
• Trailing comma