Regex Functions

A regular expression or regex object contains the pattern of a regular expression. It has properties and methods for using the regular expression to find and replace matches in strings. A regular expression can be created as a literal:

Alternatively, you can create a regular expression using the RegExp constructor:

A regular expression can be used in the match(regex), replace(substr, newStr), and search(subStr) methods to find the regular expression in a string, or can be evaluated against a string using one of the RegExp methods described in the following topics.