Selenium regular expression patterns offer the same wide array of special characters that exist in JavaScript. Below are a subset of those special characters

.

any single character

[ ]

character class: any single character that appears inside the brackets

*

quantifier: 0 or more of the preceding character (or group)

+

quantifier: 1 or more of the preceding character (or group)

?

quantifier: 0 or 1 of the preceding character (or group)

{1,5}

quantifier: 1 through 5 of the preceding character (or group)

|

alternation: the character/group on the left or the

character/group on the right

( )

grouping: often used with alternation and/or quantifier