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

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r#"(?im)\bbb-([\w\.]+(?::.+)?)=\"([\w\.:]+?)\"\s?"#).unwrap(); let string = "<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>"; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/