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

/
/
gmi

Test String

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?mi)<select name="ctl00\$ContentPlaceHolder1\$UrunListesi\$ctrl([0-9]{1,2})\$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl([0-9]{1,2})_StokBoyut">([\s\S]*?)<\/select>`) var str = `<select name="ctl00$ContentPlaceHolder1$UrunListesi$ctrl0$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl0_StokBoyut"> <option value="900061_50x80">50x80 Stok:0</option> <option value="900067_60x110">60x110 Stok:0</option> <option value="900037_70x140">70x140 Stok:0</option> <option value="356593_80 T.Yolluk">80 T.Yolluk Stok:2</option> <option value="356552_80x150">80x150 Stok:23</option> </select> ` for i, match := range re.FindAllString(str, -1) { fmt.Println(match, "found at index", i) } }

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 Golang, please visit: https://golang.org/pkg/regexp/