Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:>|>=|<|<=|=|==|!=|<>)

1st Alternative>

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative>=

>=the literal text >=

3rd Alternative<

<the literal < (60₁₀ / 74₈ / 3C₁₆)

4th Alternative<=

<=the literal text <=

5th Alternative=

=the literal = (61₁₀ / 75₈ / 3D₁₆)

6th Alternative==

==the literal text ==

7th Alternative!=

!=the literal text !=

8th Alternative<>

<>the literal text <>

\s?optionally matches any whitespace character

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[.]?

?matches at most one character from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:[0-9]+)?

?repeats the group contents below at most once:

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of line

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.

26 tokens

^(?:>|>=|<|<=|=|==|!=|<>)\s?[0-9]+[.]?(?:[0-9]+)?$

New

>9
<=10
!= 20.0
>>2
<
=2$%$
=2...3

>9
<=10
!= 20.0
>>2
<
=2$%$
=2...3