Regular Expressions 101

^start of line

txtEspthe literal text txtEsp (case sensitive)

Group 1(1[0-5]|[1-9])

1st Alternative1[0-5]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

2nd Alternative[1-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) 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.

Search reference

Regular Expression

^txtEsp(1[0-5]|[1-9])$

New

txtEsp-1
txtEsp0
txtEsp1
txtEsp2
txtEsp3
txtEsp4
txtEsp5
txtEsp6
txtEsp7
txtEsp8
txtEsp9
txtEsp10
txtEsp11
txtEsp12
txtEsp13
txtEsp14
txtEsp15
txtEsp16

Regular Expression

Substitution