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

/
/
g

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(<text.*?<\/text>)`) var str = `var svgstring = '<g font-size="1.6" font-family="DejaVu Sans" stroke="none" fill="#000000"><rect x="254.01" y="50.00" width="29" height="2.24" stroke="#053581" stroke-width="0.1" fill="#b2b8c3"></rect><text x="254.21" y="51.6" font-size="1.6" font-weight="700" font-family="DejaVu Sans" stroke="none" fill="#000000">Cav.</text><text x="259.21" y="51.6" font-size="1.6" font-weight="700" font-family="DejaVu Sans" stroke="none" fill="#000000">Wire</text><text x="267.21" y="51.6" font-size="1.6" font-weight="700" font-family="DejaVu Sans" stroke="none" fill="#000000">Colour</text><text x="274.21" y="51.6" font-size="1.6" font-weight="700" font-family="DejaVu Sans" stroke="none" fill="#000000">Gauge</text><rect x="254.01" y="52.24" width="29" height="2.24" stroke="#053581" stroke-width="0.1" fill="#ffffff"></rect><text x="254.21" y="53.84" fill="#000000"> 1</text><text x="259.21" y="53.84" fill="#000000"> FPTO-20..</text><rect x="267.01" y="52.34" width="7" height="2.04" stroke-width="0.01" fill="#C1D5D9"></rect><text x="267.21" y="53.84" fill="#000000">GY</text><text x="274.21" y="53.84" fill="#000000"> 0.75</text><rect x="254.01" y="54.48" width="29" height="2.24" stroke="#053581" stroke-width="0.1" fill="#fff8c6"></rect><text x="254.21" y="56.08" fill="#000000">2</text><text x="259.21" y="56.08" fill="#000000">FPTO-20..</text><rect x="267.01" y="54.58" width="7" height="2.04" stroke-width="0.01" fill="#EDEDED"></rect><text x="267.21" y="56.08" fill="#000000">WH</text><text x="274.21" y="56.08" fill="#000000">0.75</text><line x1="259.01" y1="50.00" x2="259.01" y2="56.72" stroke="#053581" stroke-width="0.1" fill="#053581"></line><line x1="267.01" y1="50.00" x2="267.01" y2="56.72" stroke="#053581" stroke-width="0.1" fill="#053581"></line><line x1="274.01" y1="50.00" x2="274.01" y2="56.72" stroke="#053581" stroke-width="0.1" fill="#053581"></line></g>' ` var substitution = "" fmt.Println(re.ReplaceAllString(str, substitution)) }

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/