Apply Knockout Validations in MVC Application: Part 2

Introduction

In my previous article I explained How to Apply Knockout Validations in MVC Application.

This article is a continuation of that article. In this article I will tell you about some more Knockout validations in MVC Applications.

In the previous article you saw:

• Required Validator
• MinValue Validator
• MaxValue Validator
• Email Validator

In this article I will show you:

• Date Validator
• Number Validator
• Whole Number Validator
• Phone Number for US Validator

Let's see how to apply the following validations.

Date Validation

Date Validation will check whether a Date is entered in the correct format.

All the validations are applied using the Extend Function. Date validation is also applied in the same format.

This validation validates both slashes and dashes for separating the days from months and years, both can be used together.

Output

In the output you can see that as I enter some invalid text, an error message is displayed by the TextBox.

Number Validation

Number Validation will ensure that only numbers are entered, even if you enter a non-numeric value between the numbers the validation will also detect that. It's syntax is as follows: