It is important to validate the form submitted by the user because it can have inappropriate values. Java Script provides facility to validate the form on the client-side so data processing will be faster than server-side validation.
Most of the web developers prefer Java Script form validation.
This allows you to define a better way of catching validation errors.
If an is thrown from an async validator the argument passed to the rejection handler will be that error.
It is unit tested with 100% code coverage and can be considered fit for production.
The project can be found on Git Hub where you can also find our issue tracker.
Unless otherwise specified you can always specify the message option to customize the message returned if the validator doesn't pass.
If you want to use async validation you need to use a runtime that supports Promises.
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.
Through Java Script, we can validate name, password, email, date, mobile numbers and more fields.
In this example, we are going to validate the name and password.