Regular Expressions 101

Pro

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 1(\-?\d*\.?\d*)

\-?optionally matches the literal - (45₁₀ / 55₈ / 2D₁₆)

\d*a Unicode decimal digit, repeated any number of times

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

\d*a Unicode decimal digit, repeated any number of times

"the literal " (34₁₀ / 42₈ / 22₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

u modifier: unicode. Treats the pattern and subject as UTF-16

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

"(\-?\d*\.?\d*)"

New

"12.12"
"1.2.3"
"12"
".12"
"12."
"12.12"
"-12.12"
"some text with 1 number"
some test with "12.12"
some text with "file.ext"
some text with file version is "1.1"
"backgrounds/itu/background3.png"
"."

Extraction

"12.12"
"1.2.3"
"12"
".12"
"12."
"12.12"
"-12.12"
"some text with 1 number"
some test with "12.12"
some text with "file.ext"
some text with file version is "1.1"
"backgrounds/itu/background3.png"
"."