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

r"
"
g

Test String

Code Generator

Language

Generated Code

const regex = new RegExp('(http|ftp|https):\\/\\/([\\w\\-_]+(?:(?:\\.[\\w\\-_]+)+))([\\w\\-\\.,@?^=%&amp;:/~\\+#]*[\\w\\-\\@?^=%&amp;/~\\+#])?', 'g') const str = `http://myip.ms/browse/ip_ranges/1/ownerID/224218/ownerID_A/1/sort/1/asc/1#ip_ranges_tbl_top <script src="mraid.js"></script> <img src="data:image/png,mone" style="display: none" onerror=" (function(self) { setTimeout(function() { var creative = 'GetRich'; var suffix = ''; var country = 'om'; var campaignId = 16492; var mediatorUrl = 'https://tags.mli.me'; // --- ---- var params={scriptId:'mone-tag-script-1',tagTimestamp: new Date().getTime(), tagId:(Math.floor(Math.random() * 10000))}; var req = document.createElement('script'); req.src = mediatorUrl + '/mediator/' + country + '/_/_/' + creative + '/452/' + campaignId + '?'; req.id ='mone-tag-script-1'; params.requestId = '%{\${RequestID}}%'; params.placement = '%{\${Placement}}%'; params.gclid = '%{\${GoogleUserID}}%'; if(!!suffix) params['x-suffix'] = suffix; for (var k in params) { req.src += '&amp;' + encodeURIComponent(k) + '=' + encodeURIComponent(params[k]); } if (!window.moneTags) window.moneTags = {}; if (!window.moneTags.beacons) window.moneTags.beacons = {}; window.moneTags.beacons[params.tagId] = {'transition':['%%CLICK_URL_ESC%%']}; document.head.appendChild(req); }, 2000); })(this); "/> <img src="https://imp.mli.me/api/track/impression?RequestID=%{\${RequestID}}%&CreativeID=%{\${CreativeID}}%&WinningPrice=%%WINNING_PRICE%%" width="1" height="1">`; // 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