Regex az case insensitive javascript

If you want to find strings that matches a given regular expression pattern, we use the exec function .

A regular expression (shortened as regex or regexp; also referred to as rational expression) is a sequence of characters that specifies a search pattern in text . Usually such patterns are used by string-searching algorithms for “find” or “find and replace” operations on strings, or for input validation.

A flag is an optional parameter to a regex that modifies its behavior of searching . A flag changes the default searching behaviour of a regular expression. It makes a regex search in a different way. A flag is denoted using a single lowercase alphabetic character.

The Match(String) method returns the first substring that matches a regular expression pattern in an input string . For information about the language elements used to build a regular expression pattern, see Regular Expression Language – Quick Reference.

This pattern will match: