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i want that if the number of digits in the input field in less/more than 14(for example) then joi should return an error.
how can i do this with the type of number not for string.
914
Joi validate numbersconst schema = Joi. object(). keys({ age: Joi. number().
You will need to convert the Buffer to String using toString() method. Once you have the String , you can try to parse the string to a number (Int or Float) using methods of Number class ( Number. parseInt or Number.
Joi can be used for creating schemas (just like we use mongoose for creating NoSQL schemas) and you can use it with plain Javascript objects. It's like a plug n play library and is easy to use. On the other hand, express-validator uses validator. js to validate expressjs routes, and it's mainly built for express.
Validation for 10 digit numeric mobile number are given below
joi.string().length(10).pattern(/^[0-9]+$/).required(),
You should change the rule as per your requirement. pattern(your regex) is used to accept only digits, length() is used to validate how many character validation accepts and only work with string function.
128
Validation for 10 digit numeric mobile number with custom error message are given below
joi.string().regex(/^[0-9]{10}$/).messages({'string.pattern.base': `Phone number must have 10 digits.`}).required()
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