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

/
/
ig

Test String

Code Generator

Language

Generated Code

const regex = /$elements = $xpath->query('*class[@="itemFoot"]');/ig; // Alternative syntax using RegExp constructor // const regex = new RegExp('$elements = $xpath->query(\'*class[@="itemFoot"]\');', 'ig') const str = `<img id="ctl00_oCPH1_imgPicture" class="scaled160" src="/net/usermedia/mediafile.ashx?iid=24126318&amp;sz=0" alt="Namn" /> <div class="toolbox"> </div> <span title="by _Alessa_" class="designer singlelined">by _Alessa_</span> <div class="outfitType" style="width:115px;"> <span title="This outfit is designed for the Male gender." class="block"><img src="/net/clothing/images/Male.png" />Male</span> <span title="New Style models can contain shape within the clothing. The model&#39;s torso, and legs can be completely replaced to give clothing a more natural appearance (Dresses, baggy clothes, etc)." class="block"><img src="/net/clothing/images/newstyle.png" />New</span> <span title="This outfit can receive automatic updates from the designer." class="block"><img src="/net/clothing/images/autoupdate.png" />Auto-Updateable</span> </div> </div> </a> <div class="itemFoot"> <span title="boots 01" class="name">boots 01</span> <span class="price"><b>&reg;</b><em>3.00</em> </span> <div class="buttons"> <a class="details" href="/clothing/outfit.aspx?id=1816051">Details</a> </div> </div> </div> </div> `; // 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