Calculator using knockout.js

Today I’d like to share our first tutorial about Knockout.js. This is the one of popular javascript libraries which let us use Model-View-View Model (MVVM) pattern in our web applications. Knockout is an extendable and crossbrowser framework, this is a new look at building of javascript applications. The main idea is separation of logic and presentation. We have to create a model and bind it with presentation. To link View and ViewModel is used data-attributes of HTML5. As a demonstration – I prepared a Math calculator with this new library (knockout.js).
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