How to do field validation?

Question

Vue.js

Good afternoon. Can someone tell me how to get out of such a problem, there is an input data field and there are such situations that the user enters data with errors or we forget to change the input language, and the request to the database is incorrect. We need to solve this problem with vue js. The user can enter "tilifon" instead of "telephone" or "ntktajy" instead of "telephone" with such errors, he will not receive the output. using vue js.