A query string is the part of a URL that includes field-value pairs. Here we are going to remove query string from URL using JavaScript. There are number of benefits of clean URL. Clean URL always looks better and prevent user to see if you are tracking where they came from. It is helpful for security reasons.

We can define KnockoutJS as—KnockoutJS is a JavaScript library that helps us to create very rich, responsive display and editor user interfaces with a clean underlying data model. These UI are updated dynamically by changing its data sources (e.g., changing depending on the user’s actions or when an external data source changes), It is very easy to develop, manage your application by using KnockoutJS.

The developers who familiar with Ruby on Rails, ASP.NET MVC, or any other Model View, they already know that these technologies are MVVM as a real-time form of MVC with declarative syntax. In another context, We can say that KnockoutJS is general way make our User Interfaces for displaying, editing for JSON data.

Ajax helper of ASP.NET MVC essentially provides Ajax functionality to your web applications. AJAX Helpers are used to create AJAX enabled elements like as Ajax enabled forms and links which performs request asynchronously. Using Ajax helper you can submit your HTML form using Ajax so that instead of refreshing the entire web page only a part of it can be refreshed. Additionally, you can also render action links that allow you to invoke action methods using Ajax. AJAX Helpers are extension methods of AJAXHelper class which exist in System.Web.Mvc.Ajax namespace.