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How to use Validation: Contains

omidhz 07 Aug, 2019

I can't figure out how to use the validation "Contains" field. I want users to be able to enter numbers and letters only (No space or special characters), but I'm not sure what language/code should I enter here for that purpose.
Thanks

healyhatman 07 Aug, 2019

Answer

You need regex, not "contains".

/^[A-Za-z0-9]*$/

omidhz 07 Aug, 2019

Thank you. That worked.
However, for my knowledge, what is the use for "contain" and how do you use it?

healyhatman 07 Aug, 2019

To make sure the contains a specific string

omidhz 07 Aug, 2019

Thank you.

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