Numeric

Validates that a value is a number. Accepts integers, decimals, negative values, and zero. Does not accept whitespace or non-numeric characters.

Configuration

Config flag	Type	Description
`numeric`	`boolean`	When `true`, requires the value to be numeric.

const form = useForm({
  initialValues: { price: '' },
  validationSchema: {
    price: { numeric: true },
  },
});

import { V } from 'formify-js';

V.numeric();

Scenario	Message
Value is not a number	`Must be a number`

Value	Result
`'123'`	✅ Valid
`'12.5'`	✅ Valid
`'-7'`	✅ Valid
`'0'`	✅ Valid
`'12,5'`	❌ Invalid (comma decimal separator not accepted)
`' 123 '`	❌ Invalid (whitespace)