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

Code Generator

Language

Generated Code

re = /<td data-table-header="The bank [^"]+">([\d|,|.\+]+)<\/td>/m str = '<div class=\'index-currency-table\'> <!--http://1000hz.github.io/bootstrap-validator/#validator-usage--> <div class="row"> <div class="col-xs-12"> <table class="table--exchange table--exchange--responsive"> <thead> <tr> <th scope="col">Currency</th> <th scope="col">Nominal</th> <th scope="col">The bank buys</th> <th scope="col">The bank sells</th> <th scope="col">BNB</th> </tr> </thead> <tbody> <tr> <td data-table-header="Currency"> <a href="/en/rates-indexes/currency-rates/USD/" target="_self" title="United States Dollar"> <span class="flag-icon flag-icon-us"></span> USD </a> </td> <td data-table-header="Nominal">1</td> <td data-table-header="The bank buys">1.581200</td> <td data-table-header="The bank sells">1.646100</td> <td data-table-header="BNB">1.614390</td> </tr> </tbody> </table> </div> <!--col--> </div> <!--row--> </div>' # Print the match result str.scan(re) do |match| puts match.to_s end

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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html