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

/
/
Uisg

Test String

Code Generator

Language

Generated Code

const regex = /(?:Blabla\(2\)&nbsp;:|(?<!^)\G).*<tr><td class=\"generic\">(.*)<\/td>.+<\/tr>/isg; // Alternative syntax using RegExp constructor // const regex = new RegExp('(?:Blabla\\(2\\)&nbsp;:|(?<!^)\\G).*<tr><td class=\\"generic\\">(.*)<\\\/td>.+<\\\/tr>', 'isg') const str = `2019-09-25 22:26:47.283 ERROR 2296 --- [prod-upload-9] c.a.s.t.t.service.TrendyolServiceImpl : Failed to upload 3539007 reason is could not predict the category automatically, please fill in the field aliexpress_category_id: Req: {"adminLoginId":"tr1333351585hxnn","aggregationId":"3539007","description":"<ul> \\n <li>Ürünlerimiz sağlığa zararlı kimyasallara karşı test edilmektedir.Ürünlerimizde bebeklerin yutabileceği küçük parçalar, tehlike oluşturabilecek ip ve kordonlar, keskin parçalar bulunmamaktadır. 2'Li Kız Bebek Desenli Mendil</li> \\n</ul>","externalSkulInfoDTOList":[{"price":"399","skuAttributesList":[{"skuAttributeName":"Color","skuAttributeValue":"Ekru/03E","skuImage":"https://img-trendyol.mncdn.com/Assets/ProductImages/oa/60/4260756/1/8681976357811_1_org_zoom.jpg"},{"skuAttributeName":"Size","skuAttributeValue":"One Size"}],"skuCode":"8681976357811","stock":0}],"grossWeight":"1","language":"tr","mainImagesList":["https://img-trendyol.mncdn.com/Assets/ProductImages/oa/60/4260756/1/8681976357811_1_org_zoom.jpg"],"merchantBrandName":"Koton Kids","merchantCategoryId":"373_1","merchantCategoryName":"Mendil","packageHeight":30,"packageLength":10,"packageWidth":20,"subject":"Koton Kids Ekru Kız Bebek 2'Li Kiz Bebek Desenli Mendil","thirdPartyDomain":"TRENDYOL"}`; // Reset `lastIndex` if this regex is defined globally // regex.lastIndex = 0; let m; while ((m = regex.exec(str)) !== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex.lastIndex++; } // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); }

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