Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
Processing...

Test String

Substitution
Processing...

Code Generator

Language

Generated Code

const regex = new RegExp('<tag-1>.*?</tag-1>', 'gs') const str = `<p>You will find below reports for customer <b>[CustomerName]</b> dated <b>[ReportdDate]</b></p> <tag-1> <h3>Title1</h3> <table> <thead id="t01"> <tr> <th align='center' width='80'>Order Nr</th> <th align='left' width='400'>Planning date</th> <th align='left' width='200'>Info</th> <th align='center' width='200'>Site Name</th> </tr> </thead> <tbody> [TableTodo] </tbody> </table> </tag-1> <tag-2> <h3>Title2</h3> <table> <thead id="t01"> <tr> <th align='center' width='80'>Order Nr</th> <th align='left' width='100'>Date</th> <th align='left' width='400'>Info</th> <th align='center' width='200'>Site Name</th> </tr> </thead> <tbody> [TableTodo] </tbody> </table> </tag-2>`; const subst = ``; // The substituted value will be contained in the result variable const result = str.replace(regex, subst); console.log('Substitution result: ', result);

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions