Regular Expression Tester

Test regular expressions in JavaScript. Matches will be displayed below, capturing groups to the right. Only the first match is shown.

Input

Result

Reference

Basics
`.`	Any non-newline char
`\s`	Any whitespace char
`\d`	Any digit
`^`	Start of line
`$`	End of line
`\`	Character escape

More
`\n`	Newline
`\t`	Tab
`[abc]`	Any single char: a, b, or c
`[^abc]`	Any char except: a, b, or c
`[a-z]`	Any char a to z
`[a-zA-Z]`	Any char a to z OR A to Z

Quantifiers
`*`	0 or more
`+`	1 or more
`?`	0 or 1
`{2}`	Exactly 2
`{3,6}`	Between 3 and 6
`{4,}`	4 or more

Groups
`(...)`	Capturing group
`(?:...)`	Non-capturing group
`(a\|b)`	Match a or b
`(...)?`	Optional match group
`(\d\d)`	Match any two digits
`(joe)`	Match word 'joe'