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
No Match

/
/
g

Test String

Code Generator

Language

Generated Code

re = /n">\K(.*?)(?=<)/ str = '<div class="schema-product__part schema-product__part_4"> <div class="schema-product__title"> <a data-bind="attr: {href: product.html_url}" href="https://catalog.onliner.by/mobile/xiaomi/redmi416gr"> <span data-bind="html: product.extended_name || product.full_name">Xiaomi Redmi 4 16GB Gray</span> </a> </div> <!-- ko if: !$root.isSimplifiedView --> <div class="schema-product__description"> <span data-bind="html: product.description">Android, экран 5" IPS (720x1280), ОЗУ 2 ГБ, флэш-память 16 ГБ, карты памяти, аккумулятор 4100 мАч, 2 SIM, цвет темно-серый</span> </div> <div class="schema-product__info"> <div class="schema-product__rating-group"> <!-- ko if: product.reviews && product.reviews.count --> <a class="schema-product__rating" data-bind="attr: {href: product.reviews.html_url}" href="https://catalog.onliner.by/mobile/xiaomi/redmi416gr/reviews"> <span data-bind="attr: {class: \'rating rating_\' + product.reviews.rating}" class="rating rating_45"></span> <span class="schema-product__review-count"> <span data-bind="text: product.reviews.count">28</span> <span data-bind="text: $root.format.pluralForm(product.reviews.count, [\'îòçûâ\', \'îòçûâà\', \'îòçûâîâ\'])">îòçûâîâ</span> </span> </a> <!-- /ko --> <!-- ko ifnot: product.reviews && product.reviews.count --><!-- /ko --> </div> <div class="schema-product__info-additional"> <!-- ko if: product.forum.topic_id --> <a class="schema-product__info-link" data-bind="attr: {href: product.forum.topic_url}" href="http://forum.onliner.by/viewtopic.php?t=18880155">Îáñóæäåíèå</a> <!-- /ko --> <!-- ko if: !product.forum.topic_id --><!-- /ko --> <!-- ko if: product.forum.replies_count --> <span class="schema-product__topic-count" data-bind="text: product.forum.replies_count">1566</span> <!-- /ko --> <!-- ko if: product.review_url --><!-- /ko --> </div> </div> <!-- /ko --> </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