checks for ie 11 user agent

Parses date-time duration strings +-1y2M3d4h5m6s, where 'm' is the dafault. Like this, where {} contains list of capturing groups: 21 - parsed as {,,,,21,} 2y2s - parsed as {2,,,,,2}

use this to get value of any side of an equation. You can combine this with https://regex101.com/r/fH5kJ1/1

Is a simple regex for compare tel number of El Salvador (not use +503 or iquals)

Chinese salary input

Un pequeño regex para validar si el telefono pertenece a El Salvador

search text matching any word

Get directive names from javascript code

any format, check domain to make sure it's a youtube url