Regex Tester — illustrative example

INPUT
JavaScript expression /^cat$/ with no flags. Test cat, Cat, cats and a string containing cat followed by a newline.

RESULT
cat → true
Cat → false
cats → false
cat followed by a newline → false
Reproduce with: samples.map(value => /^cat$/.test(value))

REVIEW
Testing requires an actual compatible regex engine. Report the pattern, flags and sample strings so the result can be reproduced.

This is a teaching example, not a live execution record.