Enter a regex pattern and test string to see results...
[\w.-]+@[\w.-]+\.\w+
\d{3}-\d{3}-\d{4}
https?://[\w.-]+
#[0-9A-Fa-f]{6}
\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}
\d{4}-\d{2}-\d{2}