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.
Read moreWhich function string is matches for regular expression given in pattern in case sensitive way?
If you want to find strings that matches a given regular expression pattern, we use the exec function .
Read moreWhat are regex flags?
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.
Read moreWhat does regex match return?
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.
Read moreHow do you add or condition in regex?
This pattern will match:
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