Yup react

Yup npm

npm i yup --save

Yup only characters regex validation react

yup.string()
   .required("Please enter the required field")
   .matches(/^[aA-zZ\s]+$/, "Only alphabets are allowed for this field ")

Yup react

npm install -S yup

Yup oneOf

// mixed.oneOf(arrayOfValues: Array<any>, message?: string | function): Schema Alias: equals
// Whitelist a set of values. Values added are automatically removed from any blacklist if they are in it. The ${values} interpolation can be used in the message argument.

// Note that undefined does not fail this validator, even when undefined is not included in arrayOfValues. If you don't want undefined to be a valid value, you can use mixed.required.

let schema = yup.mixed().oneOf(['jimmy', 42]);

await schema.isValid(42); // => true
await schema.isValid('jimmy'); // => true
await schema.isValid(new Date()); // => false

Source: github.com

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