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

/
/
gim

Test String

Code Generator

Language

Generated Code

use strict; my $str = '<div class="theme-black" style="padding: 20px;background-color: #fff;"> <input type="text" class="text" bb-model="color:keyup" bb-change="handleChange1" value="{{color}}" /> <input type="text" class="text" bb-model="color:keyup" bb-change="handleChange1" value="{{color}}" /> <input type="text" class="text" bb-model="args.color:keyup" value="{{args.color}}" /> <input type="text" class="text" bb-model="color1:keyup" value="{{color1}}" /> <input type="text" class="text" bb-model="args.color1:keyup" value="{{args.color1}}" /> <textarea bb-model="color:keyup">{{color}}</textarea> <br> <input type="button" value="值1(#999)" bb-click="submit1"> <input type="button" value="值1(#999)" bb-click="submit1"> <input type="button" value="值2(#ff5241)" bb-click="submit2"> <div class="result1 " bb-watch="color:style:html" bb-change="handleChange" style="color: {{color}};">{{color}}</div> <div class="result2 " bb-watch="args.color:style:html" style="color: {{args.color}};">{{args.color}}</div> <input type="button" value="dom替换3(#999)" bb-click="submit3"> <input type="button" value="dom替换4(#ff5241)" bb-click="submit4"> <div class="result3 " bb-watch="color1:style:html" style="color: {{color1}};">{{color1}}</div> <div class="result4 " bb-watch="args.color1:style:html" style="color: {{args.color1}};">{{args.color1}}</div> <br> <input type="button" value="模拟组件传入数据(_reset)" bb-click:enter="submit5"> <div class="all1" bb-watch="color:style:html" style="color: {{color}};">{{color}}</div> <div class="all2" bb-watch="color1:style:html" style="color: {{color1}};">{{color1}}</div> <div class="all3" bb-watch="args.color:style:html" style="color: {{args.color}};">{{args.color}}</div> <div class="all4" bb-watch="args.color1:style:html" style="color: {{args.color1}};">{{args.color1}}</div> <div class="all5" bb-watch="args.color:style,args.color1:html" style="color: {{args.color}};">{{args.color1}}</div> <input type="button" bb-click="tab1" value="切换(00)" class="abutton faiButton faiButton-hover" style="margin-top:5px;" /> <input type="button" bb-click="tab2" value="切换(01)" class="abutton faiButton faiButton-hover" style="margin-top:5px;" /> <div bb-watch="tab:style" style="display: {{#compare tab \'===\' \'00\'}}block;{{else}}none;{{/compare}}">00</div> <div bb-watch="tab:style" style="display: {{#compare tab \'===\' \'01\'}}block;{{else}}none;{{/compare}}">01</div> </div>'; my $regex = qr/\bbb-([\w\.]+(?::.+)?)=\"([\w\.:]+?)\"\s?/imp; if ( $str =~ /$regex/g ) { print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n"; # print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n"; # print "Capture Group 2 is $2 ... and so on\n"; } # ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p' # Named capture groups can be called via $+{name}

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 Perl, please visit: http://perldoc.perl.org/perlre.html