You can tell to use any A compatible promise implemention like this: There are already many validation libraries out there today but most of them are very tightly coupled to a language or framework.The goal of is to provide a cross framework and cross language way of validating data.This was really a lengthy process which used to put a lot of burden on the server.
allows the validators object and validator options to be a function that should return the constraints/options: Validates the attributes object against the constraints.
In forms when using email ID fields it is a good idea to use client side validation along with your programming language validation.
The following example shows how you can validate an email address for a form.
The check is done to ensure the proper syntax and structure of an email address has been entered by the user.
The code tests for the “at” symbol (@) and ensures that there is a dot (or period) near the end of the term, after the “at” symbol and at least two characters before the end of the term.