match

The match task finds regex (regular expression) matches in a string and returns the matches as an array.

Potential use case

Suppose you have a dataset and you want to find and retrieve a certain character or number. You can use the match task to search, retrieve, and display all matches that contain an occurrence of the regex.

Properties

IncomingTypeDescription
strStringRequired. The string to search.
regExpStringRequired. The regular expression to match.
flagsStringIndicates the flags to include. For a list of available flags, refer to the Regular Expressions guide on the MDN docs site.
OutgoingTypeDescription
matchesArrayReturns an array of the match results. If the regular expression does not include the g flag (to perform a global search), the task will return only the first match in the string. If no match is found, null is returned.

Example

In this example, the str reference variable to search is the words Hello World.

The regExp expression to match is the character /o/, and the flags variable is set to g, which is a global search of the entire string.

Search string and RegExp configuration
Flags variable set to g for global search

The result returned from this task shows the matched characters in the expression that was searched. There are two letter “o” characters in the words Hello World and both will be displayed in the outgoing matches variable as ["o","o"].

Output in Operations Manager showing matched characters

For related information, see the match API reference.