Number: /^d+$/
Whitespace at start of line: ^[ s]+
Date: ([01]?\d)[-\/ .]([0123]?\d)[-\/ .](\d{4})
Email address: [-\w.]+@([A-z0-9][-A-z0-9]+\.)+[A-z]{2,4}
Web Address: ((\bhttps?:\/\/)|(\bwww\.))\S*
US Zipcode: \d{5}(-\d{4})?
US Phone number: \(?(\d{3})\)?[ -.](\d{3})[ -.](\d{4})
Hex color value: /^#[a-fA-F0-9]{6}$/ or !”#$%&'()*+,-./@:;<=>[\]^_`{|}~
Using String search() with RegEx / with String
Use String replace() with RegEx / with String
test() example
exec() example
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