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

import Foundation let pattern = #"<div.*?price.*?>(\d+\.\d+)<\/div>"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #""" <section data-v-7630ac7c="" view-more-component=""> <div data-v-5c5571e4="" table-component="" data-v-7630ac7c=""> <header data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="">Price</div> <div data-v-5c5571e4="" quantity="" right-align="">Quantity</div> <div data-v-5c5571e4="" date="">Time</div></header> <section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(142, 201, 25);">8611.00</div> <div data-v-5c5571e4="" quantity="" right-align="">1.00000000</div> <div data-v-5c5571e4="" date="">13:27:17</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(142, 201, 25);">8612.30</div> <div data-v-5c5571e4="" quantity="" right-align="">1.00000000</div> <div data-v-5c5571e4="" date="">13:03:12</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(255, 42, 104);">8517.70</div> <div data-v-5c5571e4="" quantity="" right-align="">0.04983464</div> <div data-v-5c5571e4="" date="">12:51:24</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(142, 201, 25);">8608.70</div> <div data-v-5c5571e4="" quantity="" right-align="">0.59195657</div> <div data-v-5c5571e4="" date="">12:32:26</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(255, 42, 104);">8521.70</div> <div data-v-5c5571e4="" quantity="" right-align="">0.02990000</div> <div data-v-5c5571e4="" date="">11:29:57</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(142, 201, 25);">8545.20</div> <div data-v-5c5571e4="" quantity="" right-align="">0.26101049</div> <div data-v-5c5571e4="" date="">01:20:35</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(255, 42, 104);">8462.30</div> <div data-v-5c5571e4="" quantity="" right-align="">0.00674370</div> <div data-v-5c5571e4="" date="">23:49:47</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(142, 201, 25);">8539.30</div> <div data-v-5c5571e4="" quantity="" right-align="">0.05799985</div> <div data-v-5c5571e4="" date="">23:00:53</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(255, 42, 104);">8446.00</div> <div data-v-5c5571e4="" quantity="" right-align="">0.02345439</div> <div data-v-5c5571e4="" date="">22:30:43</div></section><section data-v-5c5571e4=""> <div data-v-5c5571e4="" price="" right-align="" style="color: rgb(255, 42, 104);">8540.00</div> <div data-v-5c5571e4="" quantity="" right-align="">0.25500001</div> <div data-v-5c5571e4="" date="">21:55:28</div></section></div> <section data-v-7630ac7c="" id="my-trades"><div data-v-75ce2ffa="" data-v-7630ac7c="" button-component="" class="viewmore fullbutton"> <button data-v-75ce2ffa=""></button> <!----> <span data-v-75ce2ffa="" text="">View More</span> <!----></div> <!----></section> <!----> <!----></section> <!----> """# let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(result)

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 Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression