Question

163

rated 0 times [ 165] [ 2] / answers: 1 / hits: 8478 / 5 Years ago, tue, november 19, 2019, 12:00:00

Yup.number().test('len', 'Must be exactly 5 characters', val => val && val.toString().length === 5)

It's not working correctly. If this field empty, gives a Must be exactly 5 characters, but should be show nothing.

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answered 5 Years ago dantel · Accepted Answer

Try to add nullable() to your yup schema and a regular expression for the numbers, try something like this:

const regExp = /bd{5}b/;



Yup.string().matches(regExp, {message: 'Must be exactly 5 numbers', excludeEmptyString: true})