Using Regular Expression in Kobotoolbox to Collect Phone Numbers, Email Addresses, and Restrict Text

A regular expression, or regex, is a search pattern used for matching specific characters and ranges of characters within a string. It is widely used to validate, search, extract, and restrict text in most programming languages. KoboToolbox supports regex to control the length and characters during data entry to a particular question (e.g. controlling the entry of mobile number to exactly 10 digits, controlling the entry of a valid email id etc.).
In this video, I explain how to use Regular Expression (REGEX) in Kobotoolbox to collect phone numbers, email addresses and also for restricting text.
Click on the link to download and read more on Regular Expression
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[@mulindwaarnold2046]

Thank you very much sir. You have helped me a lot😇🥰

[@amosndah6594]

Thanks
How to do when your email has numeric digits before @ ?

[@irfankhanuni]

Great work brother

[@oluwaseunogunmolu]

Thank you

[@assoualaurent4896]

I'd like to ask you a question. if you have a numerical question about age and you have another numerical question as well, how do you set kobotoolbox so that the answer to the second question is less than the answer to the first question?

[@oluwaseunogunmolu]

Yes, you can do it. You can use XLSFORM code. Watch my video on skip logic

[@haronshahata2164]

I can not do it, could you help me please by sharing the regex