Regular Expression can be used in Content Filter conditions. These symbols indicate the start and the end of a string, respectively: '^The' matches any string that starts with 'The'. 'of despair$' matches a string that ends in with 'of despair'. '^abc$' a string that starts and ends with 'abc' - effectively an exact match comparison.
This is a recent addition to the language.Old browsers may need polyfills.The method str.matchAll(regexp) is a “newer, improved” variant of str.match.It’s used mainly to search for all matches with all groups.There are 3 differences from match:. It returns an iterable object with matches instead of an array. We can make a regular array from it using Array.from. Every match is returned as an array with capturing groups (the same format as str.match without flag g). If there are no results, it returns not null, but an empty iterable object.Usage example.
// replace all dashes by a colonalert( '12-34-56'.replace( /-/g, ':' ) ) // 12:34:56The second argument is a replacement string. We can use special character in it: Symbols Action in the replacement string SymbolsAction in the replacement string$&inserts the whole match$`inserts a part of the string before the match$'inserts a part of the string after the match$nif n is a 1-2 digit number, inserts the contents of n-th capturing group, for details see$inserts the contents of the parentheses with the given name, for details see$$inserts character $For instance.
Searches an input string for all occurrences of a regular expression and returns all the matches. Searches the specified input string for all occurrences of a regular expression, beginning at the specified starting position in the string.
Public:System::Text::RegularExpressions::MatchCollection ^ Matches(System::String ^ input, int startat); public System.Text.RegularExpressions.MatchCollection Matches (string input, int startat); member this.Matches: string. int - System.Text.RegularExpressions.MatchCollection Public Function Matches (input As String, startat As Integer) As MatchCollection Parameters. Searches the specified input string for all occurrences of a specified regular expression. Public:static System::Text::RegularExpressions::MatchCollection ^ Matches(System::String ^ input, System::String ^ pattern); public static System.Text.RegularExpressions.MatchCollection Matches (string input, string pattern); static member Matches: string. string - System.Text.RegularExpressions.MatchCollection Public Shared Function Matches (input As String, pattern As String) As MatchCollection Parameters. Searches the specified input string for all occurrences of a specified regular expression, using the specified matching options. Public:static System::Text::RegularExpressions::MatchCollection ^ Matches(System::String ^ input, System::String ^ pattern, System::Text::RegularExpressions::RegexOptions options); public static System.Text.RegularExpressions.MatchCollection Matches (string input, string pattern, System.Text.RegularExpressions.RegexOptions options); static member Matches: string.
string. System.Text.RegularExpressions.RegexOptions - System.Text.RegularExpressions.MatchCollection Public Shared Function Matches (input As String, pattern As String, options As RegexOptions) As MatchCollection Parameters. Searches the specified input string for all occurrences of a specified regular expression, using the specified matching options and time-out interval.