xxxxxxxxxx
var pattern = /^[a-zA-Z0-9!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]*$/
xxxxxxxxxx
echo %H1E2L+L#O! | sed 's/[^A-Z!]//g' #replaces number and special
characters which aren't ! or an uppercase letter A-Z
xxxxxxxxxx
special characters in regExp()
. , + , * , ? , ^ , $ , ( , ) , [ , ] , { , } , | , \