Regular Expressions 101

^start of line

Character Class[0-9]+

+matches at least one character from the set below:

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

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

$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.

Search reference

Regular Expression

^[0-9]+\$$

New

Foo
Foo1
Foo$
$Foo
1Foo
1$
20$
1$Foo
12$$