TOOL » REGEX

Expressions

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Reference:regexr.com

Patterns

Pattern	Description
`a`	Match a
`\d`	Digit
`\D`	Non-Digit
`\w`	Alphanumeric character
`\W`	Non-Alphanumeric character
`\s`	Whitespace character
`\S`	Non-whitespace character
`.`	Any character
`^`	Start of the line
`$`	End of the line
`a*`	Zero or more repetitions of `a`
`a+`	One or more repetitions of `a`
`a?`	Optional contain `a`
`a{10}`	10 repetitions of `a`
`a{5,}`	More than 5 repetitions of `a`
`a{5,10}`	Between 5 and 10 repetitions of `a`
`[abc]`	Character set: `a` `b` or `c`
`[^abc]`	Character set: Not `a` `b` or `c`
`[a-z]`	Characters between a and z
`(cat\|dog)`	Capture group: `cat` or `dog`
`(\w+).png`	Capture the name of a png file