Regular Expressions 101

\ban ASCII word boundary

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[A-Z0-9]?

?matches at most one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

\ban ASCII word boundary

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

\b[A-Z][A-Z0-9]?\b

New

Height of Building code J 9.5m
Height of Building code T1 26.0m
Height of Buildings O=16 Metres
Maximum Building Height (RL m) 50m