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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

const regex = /(?sU)(?=\{[^}]*:1017).*:"(.*)"/; // Alternative syntax using RegExp constructor // const regex = new RegExp('(?sU)(?=\\{[^}]*:1017).*:"(.*)"', '') const str = `{"wvw_matches":[{"wvw_match_id":"2-1","red_world_id":2202,"blue_world_id":2101,"green_world_id":2201,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-6","red_world_id":2206,"blue_world_id":2207,"green_world_id":2205,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-2","red_world_id":2104,"blue_world_id":2010,"green_world_id":2003,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-3","red_world_id":2301,"blue_world_id":2002,"green_world_id":2012,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-7","red_world_id":2105,"blue_world_id":2011,"green_world_id":2005,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-4","red_world_id":2203,"blue_world_id":2103,"green_world_id":2007,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-5","red_world_id":2014,"blue_world_id":2204,"green_world_id":2013,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-9","red_world_id":2004,"blue_world_id":2006,"green_world_id":2102,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"2-8","red_world_id":2008,"blue_world_id":2001,"green_world_id":2009,"start_time":"2015-10-16T18:00:00Z","end_time":"2015-10-23T18:00:00Z"},{"wvw_match_id":"1-1","red_world_id":1003,"blue_world_id":1008,"green_world_id":1019,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"},{"wvw_match_id":"1-2","red_world_id":1009,"blue_world_id":1016,"green_world_id":1017,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"},{"wvw_match_id":"1-3","red_world_id":1014,"blue_world_id":1011,"green_world_id":1005,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"},{"wvw_match_id":"1-4","red_world_id":1012,"blue_world_id":1010,"green_world_id":1021,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"},{"wvw_match_id":"1-5","red_world_id":1002,"blue_world_id":1004,"green_world_id":1018,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"},{"wvw_match_id":"1-6","red_world_id":1001,"blue_world_id":1013,"green_world_id":1006,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"},{"wvw_match_id":"1-7","red_world_id":1022,"blue_world_id":1015,"green_world_id":1007,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"},{"wvw_match_id":"1-8","red_world_id":1024,"blue_world_id":1023,"green_world_id":1020,"start_time":"2015-10-17T01:00:00Z","end_time":"2015-10-24T01:00:00Z"}]}`; // Reset `lastIndex` if this regex is defined globally // regex.lastIndex = 0; let m; if ((m = regex.exec(str)) !== null) { // 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