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

/
/
gm

Test String

Code Generator

Language

Generated Code

const regex = /"title":\s*"([^"]*)".*?"weight":\s*([0-9]+)/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('"title":\\s*"([^"]*)".*?"weight":\\s*([0-9]+)', 'gm') const str = `[ { "json": "[\\n {\\n \\"data\\": {\\n \\"product\\": {\\n \\"id\\": 23349897,\\n \\"created_at\\": \\"2022-12-15T10:38:48+00:00\\",\\n \\"updated_at\\": \\"2024-10-06T18:14:29+00:00\\",\\n \\"source\\": \\"Reseller\\",\\n \\"source_ref\\": \\"SUPPRIMER1\\",\\n \\"user_ref\\": \\"EXT17\\",\\n \\"stock\\": 541,\\n \\"ean13\\": \\"9780201379648\\",\\n \\"title\\": \\"Instant Boost Botox\\",\\n \\"location\\": \\"\\",\\n \\"picture_url\\": \\"https://cdn.shopify.com/s/files/1/0083/9886/4480/products/image_600x.png?v=1674466007\\",\\n \\"weight\\": 640,\\n \\"height\\": null,\\n \\"length\\": null,\\n \\"width\\": null,\\n \\"unit_volume\\": null,\\n \\"stock_volume_in_m3\\": null,\\n \\"hs_code\\": \\"33059000\\",\\n \\"supplier\\": null,\\n \\"pack_components\\": [],\\n \\"pack_product_ids\\": [],\\n \\"product_logistic_units\\": [],\\n \\"eco_tax_cents\\": \\"0.0\\",\\n \\"eco_tax_currency\\": null,\\n \\"tax_rate\\": null,\\n \\"other_ref1\\": null,\\n \\"other_ref2\\": null,\\n \\"other_ref3\\": null,\\n \\"other_ref4\\": null,\\n \\"other_ref5\\": null,\\n \\"other_ref6\\": null,\\n \\"other_ref7\\": null,\\n \\"other_ref8\\": null,\\n \\"other_ref9\\": null,\\n \\"other_ref10\\": null,\\n \\"other_ref11\\": null,\\n \\"other_ref12\\": null,\\n \\"other_ref13\\": null,\\n \\"other_ref14\\": null,\\n \\"other_ref15\\": null,\\n \\"additional_references\\": [],\\n \\"total_physical_stock\\": 0,\\n \\"supplier_product_ids\\": [],\\n \\"product_additional_fields\\": [\\n {\\n \\"id\\": 1284855,\\n \\"created_at\\": \\"2024-02-16T10:16:38+00:00\\",\\n \\"updated_at\\": \\"2024-02-16T10:16:38+00:00\\",\\n \\"product_id\\": 23349897,\\n \\"key\\": \\"customOriginCountry\\",\\n \\"value\\": \\"FR\\"\\n }\\n ],\\n \\"product_instructions_files\\": []\\n }\\n },\\n \\"quantity\\": 1,\\n \\"product_user_ref\\": \\"EXT17\\"\\n },\\n {\\n \\"data\\": {\\n \\"product\\": {\\n \\"id\\": 23349890,\\n \\"created_at\\": \\"2022-12-15T10:38:47+00:00\\",\\n \\"updated_at\\": \\"2024-10-06T17:09:47+00:00\\",\\n \\"source\\": \\"Manual product\\",\\n \\"source_ref\\": \\"EXT08\\",\\n \\"user_ref\\": \\"EXT08\\",\\n \\"stock\\": 1567,\\n \\"ean13\\": \\"9780201349870\\",\\n \\"title\\": \\"Shampoing Bain de Soie\\",\\n \\"location\\": \\"\\",\\n \\"picture_url\\": \\"https://cdn.shopify.com/s/files/1/0083/9886/4480/products/SHAMPOOINGPRE-FORME_39_600x.png?v=1668241257\\",\\n \\"weight\\": 370,\\n \\"height\\": null,\\n \\"length\\": null,\\n \\"width\\": null,\\n \\"unit_volume\\": null,\\n \\"stock_volume_in_m3\\": null,\\n \\"hs_code\\": \\"33059000\\",\\n \\"supplier\\": null,\\n \\"pack_components\\": [],\\n \\"pack_product_ids\\": [],\\n \\"product_logistic_units\\": [],\\n \\"eco_tax_cents\\": \\"0.0\\",\\n \\"eco_tax_currency\\": \\"EUR\\",\\n \\"tax_rate\\": null,\\n \\"other_ref1\\": null,\\n \\"other_ref2\\": null,\\n \\"other_ref3\\": null,\\n \\"other_ref4\\": null,\\n \\"other_ref5\\": null,\\n \\"other_ref6\\": null,\\n \\"other_ref7\\": null,\\n \\"other_ref8\\": null,\\n \\"other_ref9\\": null,\\n \\"other_ref10\\": null,\\n \\"other_ref11\\": null,\\n \\"other_ref12\\": null,\\n \\"other_ref13\\": null,\\n \\"other_ref14\\": null,\\n \\"other_ref15\\": null,\\n \\"additional_references\\": [],\\n \\"total_physical_stock\\": 0,\\n \\"supplier_product_ids\\": [],\\n \\"product_additional_fields\\": [\\n {\\n \\"id\\": 1087243,\\n \\"created_at\\": \\"2023-06-08T13:55:58+00:00\\",\\n \\"updated_at\\": \\"2023-06-08T13:55:58+00:00\\",\\n \\"product_id\\": 23349890,\\n \\"key\\": \\"customOriginCountry\\",\\n \\"value\\": \\"IT\\"\\n }\\n ],\\n \\"product_instructions_files\\": []\\n }\\n },\\n \\"quantity\\": 1,\\n \\"product_user_ref\\": \\"EXT08\\"\\n },\\n {\\n \\"data\\": {\\n \\"product\\": {\\n \\"id\\": 23349893,\\n \\"created_at\\": \\"2022-12-15T10:38:48+00:00\\",\\n \\"updated_at\\": \\"2024-10-06T17:09:47+00:00\\",\\n \\"source\\": \\"Manual product\\",\\n \\"source_ref\\": \\"EXT09\\",\\n \\"user_ref\\": \\"EXT09\\",\\n \\"stock\\": 623,\\n \\"ean13\\": \\"3700605869374\\",\\n \\"title\\": \\"Masque profond Bain de Soie\\",\\n \\"location\\": \\"\\",\\n \\"picture_url\\": \\"https://cdn.shopify.com/s/files/1/0083/9886/4480/products/SHAMPOOINGPRE-FORME_40_600x.png?v=1668241226\\",\\n \\"weight\\": 365,\\n \\"height\\": null,\\n \\"length\\": null,\\n \\"width\\": null,\\n \\"unit_volume\\": null,\\n \\"stock_volume_in_m3\\": null,\\n \\"hs_code\\": \\"33059000\\",\\n \\"supplier\\": null,\\n \\"pack_components\\": [],\\n \\"pack_product_ids\\": [],\\n \\"product_logistic_units\\": [],\\n \\"eco_tax_cents\\": \\"0.0\\",\\n \\"eco_tax_currency\\": \\"EUR\\",\\n \\"tax_rate\\": null,\\n \\"other_ref1\\": null,\\n \\"other_ref2\\": null,\\n \\"other_ref3\\": null,\\n \\"other_ref4\\": null,\\n \\"other_ref5\\": null,\\n \\"other_ref6\\": null,\\n \\"other_ref7\\": null,\\n \\"other_ref8\\": null,\\n \\"other_ref9\\": null,\\n \\"other_ref10\\": null,\\n \\"other_ref11\\": null,\\n \\"other_ref12\\": null,\\n \\"other_ref13\\": null,\\n \\"other_ref14\\": null,\\n \\"other_ref15\\": null,\\n \\"additional_references\\": [],\\n \\"total_physical_stock\\": 0,\\n \\"supplier_product_ids\\": [],\\n \\"product_additional_fields\\": [\\n {\\n \\"id\\": 1087245,\\n \\"created_at\\": \\"2023-06-08T13:55:58+00:00\\",\\n \\"updated_at\\": \\"2023-06-08T13:55:58+00:00\\",\\n \\"product_id\\": 23349893,\\n \\"key\\": \\"customOriginCountry\\",\\n \\"value\\": \\"IT\\"\\n }\\n ],\\n \\"product_instructions_files\\": []\\n }\\n },\\n \\"quantity\\": 1,\\n \\"product_user_ref\\": \\"EXT09\\"\\n },\\n {\\n \\"data\\": {\\n \\"product\\": {\\n \\"id\\": 23349896,\\n \\"created_at\\": \\"2022-12-15T10:38:48+00:00\\",\\n \\"updated_at\\": \\"2024-10-06T15:00:55+00:00\\",\\n \\"source\\": \\"Reseller\\",\\n \\"source_ref\\": \\"EXT13\\",\\n \\"user_ref\\": \\"EXT13\\",\\n \\"stock\\": 291,\\n \\"ean13\\": \\"9780201379648\\",\\n \\"title\\": \\"Elixir N°1 Réparation\\",\\n \\"location\\": \\"\\",\\n \\"picture_url\\": \\"https://cdn.shopify.com/s/files/1/0083/9886/4480/files/mescheveuxsontuneextensiondequijesuis_13_600x.png?v=1684941023\\",\\n \\"weight\\": 200,\\n \\"height\\": null,\\n \\"length\\": null,\\n \\"width\\": null,\\n \\"unit_volume\\": null,\\n \\"stock_volume_in_m3\\": null,\\n \\"hs_code\\": \\"33059000\\",\\n \\"supplier\\": null,\\n \\"pack_components\\": [],\\n \\"pack_product_ids\\": [],\\n \\"product_logistic_units\\": [],\\n \\"eco_tax_cents\\": \\"0.0\\",\\n \\"eco_tax_currency\\": null,\\n \\"tax_rate\\": null,\\n \\"other_ref1\\": null,\\n \\"other_ref2\\": null,\\n \\"other_ref3\\": null,\\n \\"other_ref4\\": null,\\n \\"other_ref5\\": null,\\n \\"other_ref6\\": null,\\n \\"other_ref7\\": null,\\n \\"other_ref8\\": null,\\n \\"other_ref9\\": null,\\n \\"other_ref10\\": null,\\n \\"other_ref11\\": null,\\n \\"other_ref12\\": null,\\n \\"other_ref13\\": null,\\n \\"other_ref14\\": null,\\n \\"other_ref15\\": null,\\n \\"additional_references\\": [],\\n \\"total_physical_stock\\": 0,\\n \\"supplier_product_ids\\": [],\\n \\"product_additional_fields\\": [\\n {\\n \\"id\\": 1284861,\\n \\"created_at\\": \\"2024-02-16T10:16:38+00:00\\",\\n \\"updated_at\\": \\"2024-02-16T10:16:38+00:00\\",\\n \\"product_id\\": 23349896,\\n \\"key\\": \\"customOriginCountry\\",\\n \\"value\\": \\"FR\\"\\n }\\n ],\\n \\"product_instructions_files\\": []\\n }\\n },\\n \\"quantity\\": 1,\\n \\"product_user_ref\\": \\"EXT13\\"\\n },\\n {\\n \\"data\\": {\\n \\"product\\": {\\n \\"id\\": 23349901,\\n \\"created_at\\": \\"2022-12-15T10:38:48+00:00\\",\\n \\"updated_at\\": \\"2024-10-06T15:00:55+00:00\\",\\n \\"source\\": \\"Reseller\\",\\n \\"source_ref\\": \\"SUPPRIMER\\",\\n \\"user_ref\\": \\"EXT18\\",\\n \\"stock\\": 1299,\\n \\"ean13\\": \\"9780201379044\\",\\n \\"title\\": \\"Dream Protect\\",\\n \\"location\\": \\"\\",\\n \\"picture_url\\": \\"https://cdn.shopify.com/s/files/1/0083/9886/4480/files/mescheveuxsontuneextensiondequijesuis_16_600x.png?v=1684944604\\",\\n \\"weight\\": 200,\\n \\"height\\": null,\\n \\"length\\": null,\\n \\"width\\": null,\\n \\"unit_volume\\": null,\\n \\"stock_volume_in_m3\\": null,\\n \\"hs_code\\": \\"63023100\\",\\n \\"supplier\\": \\"\\",\\n \\"pack_components\\": [],\\n \\"pack_product_ids\\": [],\\n \\"product_logistic_units\\": [],\\n \\"eco_tax_cents\\": \\"0.0\\",\\n \\"eco_tax_currency\\": null,\\n \\"tax_rate\\": null,\\n \\"other_ref1\\": null,\\n \\"other_ref2\\": null,\\n \\"other_ref3\\": null,\\n \\"other_ref4\\": null,\\n \\"other_ref5\\": null,\\n \\"other_ref6\\": null,\\n \\"other_ref7\\": null,\\n \\"other_ref8\\": null,\\n \\"other_ref9\\": null,\\n \\"other_ref10\\": null,\\n \\"other_ref11\\": null,\\n \\"other_ref12\\": null,\\n \\"other_ref13\\": null,\\n \\"other_ref14\\": null,\\n \\"other_ref15\\": null,\\n \\"additional_references\\": [],\\n \\"total_physical_stock\\": 0,\\n \\"supplier_product_ids\\": [],\\n \\"product_additional_fields\\": [\\n {\\n \\"id\\": 1284864,\\n \\"created_at\\": \\"2024-02-16T10:16:38+00:00\\",\\n \\"updated_at\\": \\"2024-02-16T10:16:38+00:00\\",\\n \\"product_id\\": 23349901,\\n \\"key\\": \\"customOriginCountry\\",\\n \\"value\\": \\"FR\\"\\n }\\n ],\\n \\"product_instructions_files\\": []\\n }\\n },\\n \\"quantity\\": 1,\\n \\"product_user_ref\\": \\"EXT18\\"\\n }\\n]" } ]`; // 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