Regular Expressions 101

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

Non-Capturing Group(?:\d+(?:\.\d*)?)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d*)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d*a digit, repeated any number of times

Non-Capturing Group(?:[eE][-+]?\d+)?

?repeats the group contents below at most once:

Character Class[eE]

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

Character Class[-+]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\d+a digit, repeated at least once

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

-?(?:\d+(?:\.\d*)?)(?:[eE][-+]?\d+)?

New

-1.1577490327131464e-05
38.865878133979862
-0.037640029706400797
38.887965291134428
-0.038243258379973236
38.886652370401961
-0.038324794358468445
38.886474904266947
-0.039081561703673183
38.885154939177824
-1.1577490327131464e5