Everything is between / / ( ) - captures the match in a variable (in this case the array \d+ - captures 1 or more digits \d{1} - matches exactly 1 digit \s{1} - matches exactly 1 space \S+ - matches a single character other than whitespace .+ - matches one or more characters (including whitespaces) \[ - escapes [ so it is treated as a literal ch…

Parsing Syslog message with Regex.js

var syslog = '<14>1 2016-08-07T03:25:39.198284+00:00 loggregator 765a363b-3467-436c-3d69-6b6789533456 [APP/0] - - 7 Aug 03:25:39 - [error] [function:faf0b791.050f48] This is an error from noderedapp';

var regSys = /<(\d+)>(\d{1})\s{1}(\S+)\s{1}(\S+)\s{1}(\S+)\s{1}(\S+)\s{1}-\s{1}-\s{1}.+-\s{1}\[(\S+)\]\s{1}\[(\S+)\]\s{1}(.+)/;

var breakdown = regSys.exec(syslog);
console.log(typeof regSys);
console.log(breakdown);