Regular Expressions 101

Explanation
Pro

1st Alternative[-]?\d*\.\d+

Character Class[-]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d*a digit, repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

2nd Alternative[-]?\d+

Character Class[-]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

26 tokens

Regular Expression

[-]?\d*\.\d+|[-]?\d+

This is number extract test.
There are 3 types of numbers here.
First type is integer: like 345 or -343.
Second is float like 12.3, 15.329 or -34.2.
Third is portion like .342 or -.532.

Extraction

This is number extract test.
There are 3 types of numbers here.
First type is integer: like 345 or -343.
Second is float like 12.3, 15.329 or -34.2.
Third is portion like .342 or -.532.