In this article
The Value Parser, or Regular Expressions, is an advanced way to search and replace text.
How to use value parser tool
In the tool's settings, you can specify:
what to replace: symbols, characters, words, custom sets (templates), etc.
replace with: symbols, character, custom sets (templates), etc.
While simple character search works like a standard "Find and Replace", Regular Expressions are great because you can search for multiple characters, exclude them, add rules, and more.
Examples of custom search templates
x|y — Searches for x or y
x(?=y) — Searches for x only if it's followed by y
[a-d] — Range of characters — Square brackets mean "any character from the list."
\w+@\w+.\w+ — Searches for email.
([0-3]\d).([01]\d).(\d{4}) — Searches for date in format dd.mm.yyyy
(8|+7|7)[0-9]{7,10} — Searches for phone number in format 8********** or +7**********.
There are countless templates and combinations to replace text, and you can find many resources online.
Examples of custom value parsing patterns
Case 1: Converting the date format from DD.MM.YYYY to YYYY_MM_DD
Tool Settings: The "What to replace" and "Replace with" fields use custom templates.
Template: ([0-3]\d).([01]\d).(\d{4})
Replace with: $3_$2_$1.
The result will look like this:
Case 2: Remove tags from an email
What to replace:
\<(\/?[^>]+)>|(\n)|(\s{4,})
Replace with: Space.
Case 3: Extracting a domain from a URL
What to replace: ^https?://([^/]+)/.*$
Replace with: $1
This pattern extracts the domain name from a full URL that contains a path or parameters. For example, from https://example.org/id25 you’ll get: example.org
